ini merupakan tugas pertemuan terakhir untuk mata kuliah PEMROGRAMAN VISUAL BASIC di semester 4 ini, jadi.....
saya akan bahas tentang tugas ini,dipostingan saya
ini dia macam-macam jenis pengolahan citra yaitu :
1. GRAYSCALE
2. NEGATIF
3. BRIGHTNESS
4. BINER
5. ROTATE 90
6. CONTRAST
7. SMOOTHING
8. INVERSI
9. LOGARITMIK
10. WEIGHTED SMOOTHING
11. LOW PASS
12. HIGH PASS
13. ROTATE 180
Berikut ini Listing Program dan Tampilannya
Listing Program :
Public Class Form1
Dim gambar As Bitmap
Private Sub OpenCitraToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles OpenCitraToolStripMenuItem.Click
OFD.Filter = "BMP|*.bmp|JPG|*.Jpg"
OFD.ShowDialog()
If OFD.FileName = "" Then Exit Sub
Pic1.Image = Image.FromFile(OFD.FileName)
gambar = New Bitmap(Pic1.Image)
End Sub
Private Sub SaveCitraToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SaveCitraToolStripMenuItem.Click
SFD.Filter = "BMP|*.bmp|JPG|*.Jpg"
SFD.ShowDialog()
If SFD.FileName = "" Then Exit Sub
If SFD.FilterIndex = 1 Then
gambar.Save(SFD.FileName, System.Drawing.Imaging.ImageFormat.Jpeg)
End If
If SFD.FilterIndex = 2 Then
gambar.Save(SFD.FileName, System.Drawing.Imaging.ImageFormat.Bmp)
End If
End Sub
Private Sub DefaultGambarToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles DefaultGambarToolStripMenuItem.Click
gambar = New Bitmap(Pic1.Image)
End Sub
Private Sub KeluarToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KeluarToolStripMenuItem.Click
End
End Sub
gambar = New Bitmap(Pic1.Image)
End Sub
Private Sub KeluarToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles KeluarToolStripMenuItem.Click
End
End Sub
Tampilannya :
1. GRAYSCALE
Listing Program :
Private Sub GrayscaleToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles GrayscaleToolStripMenuItem.Click
Dim pb, pc As Integer
Dim rt, vM, vH, vB As Double
With gambar
For pb = 0 To .Height - 1
For pc = 0 To .Width - 1
vM = .GetPixel(pc, pb).R
vH = .GetPixel(pc, pb).G
vB = .GetPixel(pc, pb).B
rt = (vM + vH + vB) / 3
.SetPixel(pc, pb, Color.FromArgb(rt, rt, rt))
Next
Pic2.Image = gambar
Pic2.Refresh()
Next
End With
End Sub
Tampilannya :
2. NEGATIF
Listing Program :
Private Sub NegatifToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles NegatifToolStripMenuItem.Click
Dim pb, pc As Integer
Dim vM, vH, vB As Double
With gambar
For pb = 0 To .Height - 1
For pc = 0 To .Width - 1
vM = 255 - .GetPixel(pc, pb).R
vH = 255 - .GetPixel(pc, pb).G
vB = 255 - .GetPixel(pc, pb).B
If vM <= 0 Then vM = 0
If vB <= 0 Then vB = 0
If vH <= 0 Then vH = 0
.SetPixel(pc, pb, Color.FromArgb(vM, vH, vB))
Next
Pic2.Image = gambar
Pic2.Refresh()
Next
End With
End Sub
Tampilannya :
3. BRIGHTNESS
Listing Program :
Private Sub BrigthnessToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BrigthnessToolStripMenuItem.Click
Dim pb, pc As Integer
Dim vM, vH, vB As Double
With gambar
For pb = 0 To .Height - 1
For pc = 0 To .Width - 1
vM = .GetPixel(pc, pb).R + 5
vH = .GetPixel(pc, pb).G + 5
vB = .GetPixel(pc, pb).B + 5
If vM > 255 Then vM = 255
If vB > 255 Then vB = 255
If vH > 255 Then vH = 255
.SetPixel(pc, pb, Color.FromArgb(vM, vH, vB))
Next
Pic2.Image = gambar
Pic2.Refresh()
Next
End With
End Sub
Dim pb, pc As Integer
Dim vM, vH, vB As Double
With gambar
For pb = 0 To .Height - 1
For pc = 0 To .Width - 1
vM = .GetPixel(pc, pb).R + 5
vH = .GetPixel(pc, pb).G + 5
vB = .GetPixel(pc, pb).B + 5
If vM > 255 Then vM = 255
If vB > 255 Then vB = 255
If vH > 255 Then vH = 255
.SetPixel(pc, pb, Color.FromArgb(vM, vH, vB))
Next
Pic2.Image = gambar
Pic2.Refresh()
Next
End With
End Sub
Tampilannya :
4. BINER
Listing Program :
Private Sub BinerToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles BinerToolStripMenuItem.Click
Dim pb, pc As Integer
Dim rata, vM, vH, vB As Double
With gambar
For pb = 0 To .Height - 1
For pc = 0 To .Width - 1
vM = .GetPixel(pc, pb).R
vH = .GetPixel(pc, pb).G
vB = .GetPixel(pc, pb).B
rata = (vM + vH + vB) / 3
If (rata < 128) Then
vM = 0
vH = 0
vB = 0
Else
vM = 255
vH = 255
vB = 255
End If
.SetPixel(pc, pb, Color.FromArgb(vM, vH, vB))
Next
Pic2.Image = gambar
Pic2.Refresh()
Next
End With
End Sub
Dim pb, pc As Integer
Dim rata, vM, vH, vB As Double
With gambar
For pb = 0 To .Height - 1
For pc = 0 To .Width - 1
vM = .GetPixel(pc, pb).R
vH = .GetPixel(pc, pb).G
vB = .GetPixel(pc, pb).B
rata = (vM + vH + vB) / 3
If (rata < 128) Then
vM = 0
vH = 0
vB = 0
Else
vM = 255
vH = 255
vB = 255
End If
.SetPixel(pc, pb, Color.FromArgb(vM, vH, vB))
Next
Pic2.Image = gambar
Pic2.Refresh()
Next
End With
End Sub
Tampilannya :
5. ROTATE 90
Listing Program :
Private Sub RotateToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles RotateToolStripMenuItem.Click
Dim rgb As Image
rgb = Pic2.Image
If rgb IsNot Nothing Then rgb.RotateFlip(RotateFlipType.Rotate90FlipXY)
Pic2.Image = rgb
End Sub
Dim rgb As Image
rgb = Pic2.Image
If rgb IsNot Nothing Then rgb.RotateFlip(RotateFlipType.Rotate90FlipXY)
Pic2.Image = rgb
End Sub
Tampilannya :
6.CONTRAST
Listing Program :
Private Sub ContrastToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles ContrastToolStripMenuItem.Click
gambar = New Bitmap(Pic1.Image)
Pic2.Image = gambar
Dim tempbmp As New Bitmap(Pic1.Image)
Dim DX As Integer = 1
Dim DY As Integer = 1
Dim Red, Green, Blue As Integer
Dim X, Y As Integer
Dim tc As Integer
tc = 5
With tempbmp
For X = DX To .Height - DX - 1
For Y = DY To .Width - DY - 1
Red = CInt(.GetPixel(Y, X).R)
Green = CInt(.GetPixel(Y, X).G)
Blue = CInt(.GetPixel(Y, X).B)
'Grey = (Red + Green + Blue) / 3 'konversi warna pada pixel Y,X ke grey
Red = Red * tc
Blue = Blue * tc
Green = Green * tc
If (Red > 255) Then
Red = 255
End If
If (Blue > 255) Then
Blue = 255
End If
If (Green > 255) Then
Green = 255
End If
gambar.SetPixel(Y, X, Color.FromArgb(Red, Green, Blue))
Next
If X Mod 10 = 0 Then
Pic1.Invalidate()
Pic2.Refresh()
End If
Next
End With
End Sub
gambar = New Bitmap(Pic1.Image)
Pic2.Image = gambar
Dim tempbmp As New Bitmap(Pic1.Image)
Dim DX As Integer = 1
Dim DY As Integer = 1
Dim Red, Green, Blue As Integer
Dim X, Y As Integer
Dim tc As Integer
tc = 5
With tempbmp
For X = DX To .Height - DX - 1
For Y = DY To .Width - DY - 1
Red = CInt(.GetPixel(Y, X).R)
Green = CInt(.GetPixel(Y, X).G)
Blue = CInt(.GetPixel(Y, X).B)
'Grey = (Red + Green + Blue) / 3 'konversi warna pada pixel Y,X ke grey
Red = Red * tc
Blue = Blue * tc
Green = Green * tc
If (Red > 255) Then
Red = 255
End If
If (Blue > 255) Then
Blue = 255
End If
If (Green > 255) Then
Green = 255
End If
gambar.SetPixel(Y, X, Color.FromArgb(Red, Green, Blue))
Next
If X Mod 10 = 0 Then
Pic1.Invalidate()
Pic2.Refresh()
End If
Next
End With
End Sub
Tampilannya :
7. SMOOTHING
Listing Program :
Private Sub SmoothingToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles SmoothingToolStripMenuItem.Click
Dim MF(2, 2) As Double
'MaskFilter.Show()
'matriks Filter
' 0 1 2
'0 a b c
'1 d e f
'2 g h i
'Filter smoothing
MF(0, 0) = 1 / 9 'a
MF(0, 1) = 1 / 9 'b
MF(0, 2) = 1 / 9 'c
MF(1, 0) = 1 / 9 'd
MF(1, 1) = 1 / 9 'e
MF(1, 2) = 1 / 9 'f
MF(2, 0) = 1 / 9 'g
MF(2, 1) = 1 / 9 'h
MF(2, 2) = 1 / 9 'i
gambar = New Bitmap(Pic1.Image)
Pic2.Image = gambar
Dim tempbmp As New Bitmap(Pic1.Image)
Dim DX As Integer = 1
Dim DY As Integer = 1
Dim Red As Integer, Green As Integer, Blue As Integer
With gambar
For i = DX To .Height - DX - 1
For j = DY To .Width - DY - 1
'proses matriks filter
'point(j,i)*e --> titik tengah
Red = CInt(.GetPixel(j, i).R) * MF(1, 1)
Green = CInt(.GetPixel(j, i).G) * MF(1, 1)
Blue = CInt(.GetPixel(j, i).B) * MF(1, 1)
'proses titik tetangga
'point(j-1,i-1)*a--> MF(0,0)--> titik kiri atas
If j - 1 < 1 And i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i - 1).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j - 1, i - 1).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i - 1).B) * MF(0, 0))
End If
'point(j,i-1)*b --> MF(0,1) --> titik atas
If i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 1))
Else
Red = Red + (CInt(.GetPixel(j, i - 1).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i - 1).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i - 1).B) * MF(0, 1))
End If
'point(j+1,i-1)*c --> MF(0,2) --> titik kanan atas
If j + 1 > .Width - DY - 1 And i - 1 > 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i - 1).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j + 1, i - 1).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i - 1).B) * MF(0, 2))
End If
'point(j-1,i)*d --> MF(1,0) --> titik kiri
If j - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j - 1, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i).B) * MF(1, 0))
End If
'point(j+1,i)*f --> MF(1,2) --> titik kanan
If j + 1 > .Width - DY - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j + 1, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i).B) * MF(1, 2))
End If
'point(j-1,i+1)*g --> MF(2,0) --> titik kiri bawah
If j - 1 < 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i + 1).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j - 1, i + 1).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i + 1).B) * MF(2, 0))
End If
'point(j,i+1)*g --> MF(2,1) --> titik bawah
If i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 1))
Else
Red = Red + (CInt(.GetPixel(j, i + 1).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i + 1).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i + 1).B) * MF(2, 1))
End If
'point(j+1,i+1)*h --> MF(2,2) --> titik kanan bawah
If j + 1 > .Width - DY - 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i + 1).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j + 1, i + 1).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i + 1).B) * MF(2, 2))
End If
'normalisasi
If Red < 0 Then
Red = 0
Else
If Red > 255 Then
Red = 255
End If
End If
If Green < 0 Then
Green = 0
Else
If Green > 255 Then
Green = 255
End If
End If
If Blue < 0 Then
Blue = 0
Else
If Blue > 255 Then
Blue = 255
End If
End If
'simpan warna hasil smoothing ke point j,i
gambar.SetPixel(j, i, Color.FromArgb(Red, Green, Blue))
Next
If i Mod 10 = 0 Then
Pic1.Invalidate()
Me.Text = Int(100 * i / (Pic1.Image.Height - 2)).ToString & "%"
Pic1.Refresh()
End If
Next
End With
Pic1.Refresh()
Me.Text = "Proses Smoothing Image berhasil"
End Sub
Dim MF(2, 2) As Double
'MaskFilter.Show()
'matriks Filter
' 0 1 2
'0 a b c
'1 d e f
'2 g h i
'Filter smoothing
MF(0, 0) = 1 / 9 'a
MF(0, 1) = 1 / 9 'b
MF(0, 2) = 1 / 9 'c
MF(1, 0) = 1 / 9 'd
MF(1, 1) = 1 / 9 'e
MF(1, 2) = 1 / 9 'f
MF(2, 0) = 1 / 9 'g
MF(2, 1) = 1 / 9 'h
MF(2, 2) = 1 / 9 'i
gambar = New Bitmap(Pic1.Image)
Pic2.Image = gambar
Dim tempbmp As New Bitmap(Pic1.Image)
Dim DX As Integer = 1
Dim DY As Integer = 1
Dim Red As Integer, Green As Integer, Blue As Integer
With gambar
For i = DX To .Height - DX - 1
For j = DY To .Width - DY - 1
'proses matriks filter
'point(j,i)*e --> titik tengah
Red = CInt(.GetPixel(j, i).R) * MF(1, 1)
Green = CInt(.GetPixel(j, i).G) * MF(1, 1)
Blue = CInt(.GetPixel(j, i).B) * MF(1, 1)
'proses titik tetangga
'point(j-1,i-1)*a--> MF(0,0)--> titik kiri atas
If j - 1 < 1 And i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i - 1).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j - 1, i - 1).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i - 1).B) * MF(0, 0))
End If
'point(j,i-1)*b --> MF(0,1) --> titik atas
If i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 1))
Else
Red = Red + (CInt(.GetPixel(j, i - 1).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i - 1).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i - 1).B) * MF(0, 1))
End If
'point(j+1,i-1)*c --> MF(0,2) --> titik kanan atas
If j + 1 > .Width - DY - 1 And i - 1 > 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i - 1).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j + 1, i - 1).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i - 1).B) * MF(0, 2))
End If
'point(j-1,i)*d --> MF(1,0) --> titik kiri
If j - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j - 1, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i).B) * MF(1, 0))
End If
'point(j+1,i)*f --> MF(1,2) --> titik kanan
If j + 1 > .Width - DY - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j + 1, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i).B) * MF(1, 2))
End If
'point(j-1,i+1)*g --> MF(2,0) --> titik kiri bawah
If j - 1 < 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i + 1).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j - 1, i + 1).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i + 1).B) * MF(2, 0))
End If
'point(j,i+1)*g --> MF(2,1) --> titik bawah
If i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 1))
Else
Red = Red + (CInt(.GetPixel(j, i + 1).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i + 1).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i + 1).B) * MF(2, 1))
End If
'point(j+1,i+1)*h --> MF(2,2) --> titik kanan bawah
If j + 1 > .Width - DY - 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i + 1).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j + 1, i + 1).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i + 1).B) * MF(2, 2))
End If
'normalisasi
If Red < 0 Then
Red = 0
Else
If Red > 255 Then
Red = 255
End If
End If
If Green < 0 Then
Green = 0
Else
If Green > 255 Then
Green = 255
End If
End If
If Blue < 0 Then
Blue = 0
Else
If Blue > 255 Then
Blue = 255
End If
End If
'simpan warna hasil smoothing ke point j,i
gambar.SetPixel(j, i, Color.FromArgb(Red, Green, Blue))
Next
If i Mod 10 = 0 Then
Pic1.Invalidate()
Me.Text = Int(100 * i / (Pic1.Image.Height - 2)).ToString & "%"
Pic1.Refresh()
End If
Next
End With
Pic1.Refresh()
Me.Text = "Proses Smoothing Image berhasil"
End Sub
Tampilannya :
8. INVERSI
Listing Program :
Private Sub InversiToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles InversiToolStripMenuItem.Click
Dim inVal As Object
inVal = InputBox("Berapa Bit ? ", "Inversi", "8")
If inVal <> "" Then
gambar = New Bitmap(Pic1.Image) 'Gambar asli dijadikan gambar Bitmap
Pic2.Image = gambar
Dim tempbmp As New Bitmap(Pic1.Image) 'deklarasi gambar Bitmap dari gambar asli untuk diproses
Dim DX As Integer = 1
Dim DY As Integer = 1
Dim mBit, Red As Integer, Green As Integer, Blue As Integer, Grey As Integer
Dim X, Y As Integer
mBit = CInt(inVal)
With tempbmp
For X = DX To .Height - DX - 1
For Y = DY To .Width - DY - 1
Red = CInt((Math.Pow(2, mBit) - 1)) - CInt(.GetPixel(Y, X).R) 'ambil nilai warna merah (Red) pada pixel(Y,X)
Green = CInt((Math.Pow(2, mBit) - 1)) - CInt(.GetPixel(Y, X).G) 'ambil nilai warna hijau (Green) pada pixel(Y,X)
Blue = CInt((Math.Pow(2, mBit) - 1)) - CInt(.GetPixel(Y, X).B) 'ambil nilai warna biru (Blue) pada pixel(Y,X)
If (Red > 255) Then
Red = 255
Else
If Red < 0 Then
Red = 0
End If
End If
If Green > 255 Then
Green = 255
Else
If Green < 0 Then
Green = 0
End If
End If
If Blue > 255 Then
Blue = 255
Else
If Blue < 0 Then
Blue = 0
End If
End If
gambar.SetPixel(Y, X, Color.FromArgb(Red, Green, Blue)) 'simpan warna baru pada pixel(Y,X)
Next
If X Mod 10 = 0 Then
Pic1.Invalidate()
Pic1.Refresh()
End If
Next
End With
Pic1.Refresh()
Me.Text = "Pengolahan Citra : Proses Inversi Scale berhasil"
End If
End Sub
Dim inVal As Object
inVal = InputBox("Berapa Bit ? ", "Inversi", "8")
If inVal <> "" Then
gambar = New Bitmap(Pic1.Image) 'Gambar asli dijadikan gambar Bitmap
Pic2.Image = gambar
Dim tempbmp As New Bitmap(Pic1.Image) 'deklarasi gambar Bitmap dari gambar asli untuk diproses
Dim DX As Integer = 1
Dim DY As Integer = 1
Dim mBit, Red As Integer, Green As Integer, Blue As Integer, Grey As Integer
Dim X, Y As Integer
mBit = CInt(inVal)
With tempbmp
For X = DX To .Height - DX - 1
For Y = DY To .Width - DY - 1
Red = CInt((Math.Pow(2, mBit) - 1)) - CInt(.GetPixel(Y, X).R) 'ambil nilai warna merah (Red) pada pixel(Y,X)
Green = CInt((Math.Pow(2, mBit) - 1)) - CInt(.GetPixel(Y, X).G) 'ambil nilai warna hijau (Green) pada pixel(Y,X)
Blue = CInt((Math.Pow(2, mBit) - 1)) - CInt(.GetPixel(Y, X).B) 'ambil nilai warna biru (Blue) pada pixel(Y,X)
If (Red > 255) Then
Red = 255
Else
If Red < 0 Then
Red = 0
End If
End If
If Green > 255 Then
Green = 255
Else
If Green < 0 Then
Green = 0
End If
End If
If Blue > 255 Then
Blue = 255
Else
If Blue < 0 Then
Blue = 0
End If
End If
gambar.SetPixel(Y, X, Color.FromArgb(Red, Green, Blue)) 'simpan warna baru pada pixel(Y,X)
Next
If X Mod 10 = 0 Then
Pic1.Invalidate()
Pic1.Refresh()
End If
Next
End With
Pic1.Refresh()
Me.Text = "Pengolahan Citra : Proses Inversi Scale berhasil"
End If
End Sub
Tampilannya :
9. LOGARITMIK
Listing Program :
Private Sub LogaritmikToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles LogaritmikToolStripMenuItem.Click
Dim tL As Object
tL = InputBox("Masukan Nilai C : ", "Transformasi Logaritmik", "0")
If tL <> "" Then
gambar = New Bitmap(Pic1.Image) 'Gambar asli dijadikan gambar Bitmap
Pic2.Image = gambar
Dim tempbmp As New Bitmap(Pic1.Image) 'deklarasi gambar Bitmap dari gambar asli untuk diproses
Dim DX As Integer = 1
Dim DY As Integer = 1
Dim c, Red As Integer, Green As Integer, Blue As Integer, Grey As Integer
Dim X, Y As Integer
c = CDbl(tL)
With tempbmp
For X = DX To .Height - DX - 1
For Y = DY To .Width - DY - 1
Red = c * Math.Log(CInt(.GetPixel(Y, X).R) + 1) 'ambil nilai warna merah (Red) pada pixel(Y,X)
Green = c * Math.Log(CInt(.GetPixel(Y, X).G) + 1) 'ambil nilai warna hijau (Green) pada pixel(Y,X)
Blue = c * Math.Log(CInt(.GetPixel(Y, X).B) + 1) 'ambil nilai warna biru (Blue) pada pixel(Y,X)
If (Red > 255) Then
Red = 255
Else
If Red < 0 Then
Red = 0
End If
End If
If Green > 255 Then
Green = 255
Else
If Green < 0 Then
Green = 0
End If
End If
If Blue > 255 Then
Blue = 255
Else
If Blue < 0 Then
Blue = 0
End If
End If
gambar.SetPixel(Y, X, Color.FromArgb(Red, Green, Blue)) 'simpan warna baru pada pixel(Y,X)
Next
If X Mod 10 = 0 Then
Pic1.Invalidate()
Pic1.Refresh()
End If
Next
End With
Pic1.Refresh()
Me.Text = "Pengolahan Citra : Proses Transformasi Logaritmik berhasil"
End If
End Sub
Dim tL As Object
tL = InputBox("Masukan Nilai C : ", "Transformasi Logaritmik", "0")
If tL <> "" Then
gambar = New Bitmap(Pic1.Image) 'Gambar asli dijadikan gambar Bitmap
Pic2.Image = gambar
Dim tempbmp As New Bitmap(Pic1.Image) 'deklarasi gambar Bitmap dari gambar asli untuk diproses
Dim DX As Integer = 1
Dim DY As Integer = 1
Dim c, Red As Integer, Green As Integer, Blue As Integer, Grey As Integer
Dim X, Y As Integer
c = CDbl(tL)
With tempbmp
For X = DX To .Height - DX - 1
For Y = DY To .Width - DY - 1
Red = c * Math.Log(CInt(.GetPixel(Y, X).R) + 1) 'ambil nilai warna merah (Red) pada pixel(Y,X)
Green = c * Math.Log(CInt(.GetPixel(Y, X).G) + 1) 'ambil nilai warna hijau (Green) pada pixel(Y,X)
Blue = c * Math.Log(CInt(.GetPixel(Y, X).B) + 1) 'ambil nilai warna biru (Blue) pada pixel(Y,X)
If (Red > 255) Then
Red = 255
Else
If Red < 0 Then
Red = 0
End If
End If
If Green > 255 Then
Green = 255
Else
If Green < 0 Then
Green = 0
End If
End If
If Blue > 255 Then
Blue = 255
Else
If Blue < 0 Then
Blue = 0
End If
End If
gambar.SetPixel(Y, X, Color.FromArgb(Red, Green, Blue)) 'simpan warna baru pada pixel(Y,X)
Next
If X Mod 10 = 0 Then
Pic1.Invalidate()
Pic1.Refresh()
End If
Next
End With
Pic1.Refresh()
Me.Text = "Pengolahan Citra : Proses Transformasi Logaritmik berhasil"
End If
End Sub
Tampilannya :
10. WEIGHTED SMOOTHING
Listing Program :
Private Sub WeightedSmoothingToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles WeightedSmoothingToolStripMenuItem.Click
Dim MF(2, 2) As Double
'MaskFilter.Show()
'matriks Filter
' 0 1 2
'0 a b c
'1 d e f
'2 g h i
'Filter smoothing
MF(0, 0) = 1 / 16 'a
MF(0, 1) = 2 / 16 'b
MF(0, 2) = 1 / 16 'c
MF(1, 0) = 2 / 16 'd
MF(1, 1) = 4 / 16 'e
MF(1, 2) = 2 / 16 'f
MF(2, 0) = 1 / 16 'g
MF(2, 1) = 2 / 16 'h
MF(2, 2) = 1 / 16 'i
gambar = New Bitmap(Pic1.Image)
Pic2.Image = gambar
Dim tempbmp As New Bitmap(Pic1.Image)
Dim DX As Integer = 1
Dim DY As Integer = 1
Dim Red As Integer, Green As Integer, Blue As Integer
Dim i As Integer, j As Integer
Dim k As Integer, l As Integer 'untuk mask border
With gambar
For i = DX To .Height - DX - 1
For j = DY To .Width - DY - 1
'proses matriks filter
'point(j,i)*e --> titik tengah
Red = CInt(.GetPixel(j, i).R) * MF(1, 1)
Green = CInt(.GetPixel(j, i).G) * MF(1, 1)
Blue = CInt(.GetPixel(j, i).B) * MF(1, 1)
'proses titik tetangga
'point(j-1,i-1)*a--> MF(0,0)--> titik kiri atas
If j - 1 < 1 And i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i - 1).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j - 1, i - 1).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i - 1).B) * MF(0, 0))
End If
'point(j,i-1)*b --> MF(0,1) --> titik atas
If i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 1))
Else
Red = Red + (CInt(.GetPixel(j, i - 1).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i - 1).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i - 1).B) * MF(0, 1))
End If
'point(j+1,i-1)*c --> MF(0,2) --> titik kanan atas
If j + 1 > .Width - DY - 1 And i - 1 > 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i - 1).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j + 1, i - 1).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i - 1).B) * MF(0, 2))
End If
'point(j-1,i)*d --> MF(1,0) --> titik kiri
If j - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j - 1, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i).B) * MF(1, 0))
End If
'point(j+1,i)*f --> MF(1,2) --> titik kanan
If j + 1 > .Width - DY - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j + 1, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i).B) * MF(1, 2))
End If
'point(j-1,i+1)*g --> MF(2,0) --> titik kiri bawah
If j - 1 < 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i + 1).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j - 1, i + 1).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i + 1).B) * MF(2, 0))
End If
'point(j,i+1)*g --> MF(2,1) --> titik bawah
If i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 1))
Else
Red = Red + (CInt(.GetPixel(j, i + 1).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i + 1).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i + 1).B) * MF(2, 1))
End If
'point(j+1,i+1)*h --> MF(2,2) --> titik kanan bawah
If j + 1 > .Width - DY - 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i + 1).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j + 1, i + 1).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i + 1).B) * MF(2, 2))
End If
'normalisasi
If Red < 0 Then
Red = 0
Else
If Red > 255 Then
Red = 255
End If
End If
If Green < 0 Then
Green = 0
Else
If Green > 255 Then
Green = 255
End If
End If
If Blue < 0 Then
Blue = 0
Else
If Blue > 255 Then
Blue = 255
End If
End If
'simpan warna hasil smoothing ke point j,i
gambar.SetPixel(j, i, Color.FromArgb(Red, Green, Blue))
Next
If i Mod 10 = 0 Then
Pic1.Invalidate()
Me.Text = Int(100 * i / (Pic1.Image.Height - 2)).ToString & "%"
Pic1.Refresh()
End If
Next
End With
Pic1.Refresh()
Me.Text = "Proses Weighted Smoothing Image berhasil"
End Sub
Dim MF(2, 2) As Double
'MaskFilter.Show()
'matriks Filter
' 0 1 2
'0 a b c
'1 d e f
'2 g h i
'Filter smoothing
MF(0, 0) = 1 / 16 'a
MF(0, 1) = 2 / 16 'b
MF(0, 2) = 1 / 16 'c
MF(1, 0) = 2 / 16 'd
MF(1, 1) = 4 / 16 'e
MF(1, 2) = 2 / 16 'f
MF(2, 0) = 1 / 16 'g
MF(2, 1) = 2 / 16 'h
MF(2, 2) = 1 / 16 'i
gambar = New Bitmap(Pic1.Image)
Pic2.Image = gambar
Dim tempbmp As New Bitmap(Pic1.Image)
Dim DX As Integer = 1
Dim DY As Integer = 1
Dim Red As Integer, Green As Integer, Blue As Integer
Dim i As Integer, j As Integer
Dim k As Integer, l As Integer 'untuk mask border
With gambar
For i = DX To .Height - DX - 1
For j = DY To .Width - DY - 1
'proses matriks filter
'point(j,i)*e --> titik tengah
Red = CInt(.GetPixel(j, i).R) * MF(1, 1)
Green = CInt(.GetPixel(j, i).G) * MF(1, 1)
Blue = CInt(.GetPixel(j, i).B) * MF(1, 1)
'proses titik tetangga
'point(j-1,i-1)*a--> MF(0,0)--> titik kiri atas
If j - 1 < 1 And i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i - 1).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j - 1, i - 1).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i - 1).B) * MF(0, 0))
End If
'point(j,i-1)*b --> MF(0,1) --> titik atas
If i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 1))
Else
Red = Red + (CInt(.GetPixel(j, i - 1).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i - 1).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i - 1).B) * MF(0, 1))
End If
'point(j+1,i-1)*c --> MF(0,2) --> titik kanan atas
If j + 1 > .Width - DY - 1 And i - 1 > 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i - 1).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j + 1, i - 1).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i - 1).B) * MF(0, 2))
End If
'point(j-1,i)*d --> MF(1,0) --> titik kiri
If j - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j - 1, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i).B) * MF(1, 0))
End If
'point(j+1,i)*f --> MF(1,2) --> titik kanan
If j + 1 > .Width - DY - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j + 1, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i).B) * MF(1, 2))
End If
'point(j-1,i+1)*g --> MF(2,0) --> titik kiri bawah
If j - 1 < 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i + 1).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j - 1, i + 1).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i + 1).B) * MF(2, 0))
End If
'point(j,i+1)*g --> MF(2,1) --> titik bawah
If i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 1))
Else
Red = Red + (CInt(.GetPixel(j, i + 1).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i + 1).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i + 1).B) * MF(2, 1))
End If
'point(j+1,i+1)*h --> MF(2,2) --> titik kanan bawah
If j + 1 > .Width - DY - 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i + 1).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j + 1, i + 1).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i + 1).B) * MF(2, 2))
End If
'normalisasi
If Red < 0 Then
Red = 0
Else
If Red > 255 Then
Red = 255
End If
End If
If Green < 0 Then
Green = 0
Else
If Green > 255 Then
Green = 255
End If
End If
If Blue < 0 Then
Blue = 0
Else
If Blue > 255 Then
Blue = 255
End If
End If
'simpan warna hasil smoothing ke point j,i
gambar.SetPixel(j, i, Color.FromArgb(Red, Green, Blue))
Next
If i Mod 10 = 0 Then
Pic1.Invalidate()
Me.Text = Int(100 * i / (Pic1.Image.Height - 2)).ToString & "%"
Pic1.Refresh()
End If
Next
End With
Pic1.Refresh()
Me.Text = "Proses Weighted Smoothing Image berhasil"
End Sub
Tampilannya :
11. LOW PASS
Listing Program :
Private Sub LowPassToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles LowPassToolStripMenuItem.Click
Dim MF(2, 2) As Double
'MaskFilter.Show()
'matriks Filter
' 0 1 2
'0 a b c
'1 d e f
'2 g h i
'Filter smoothing
MF(0, 0) = 0 'a
MF(0, 1) = -1 'b
MF(0, 2) = 0 'c
MF(1, 0) = -1 'd
MF(1, 1) = 4 'e
MF(1, 2) = -1 'f
MF(2, 0) = 0 'g
MF(2, 1) = -1 'h
MF(2, 2) = 0 'i
gambar = New Bitmap(Pic1.Image)
Pic2.Image = gambar
Dim tempbmp As New Bitmap(Pic1.Image)
Dim DX As Integer = 1
Dim DY As Integer = 1
Dim Red As Integer, Green As Integer, Blue As Integer
Dim i As Integer, j As Integer
Dim k As Integer, l As Integer 'untuk mask border
With gambar
For i = DX To .Height - DX - 1
For j = DY To .Width - DY - 1
'proses matriks filter
'point(j,i)*e --> titik tengah
Red = CInt(.GetPixel(j, i).R) * MF(1, 1)
Green = CInt(.GetPixel(j, i).G) * MF(1, 1)
Blue = CInt(.GetPixel(j, i).B) * MF(1, 1)
'proses titik tetangga
'point(j-1,i-1)*a--> MF(0,0)--> titik kiri atas
If j - 1 < 1 And i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i - 1).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j - 1, i - 1).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i - 1).B) * MF(0, 0))
End If
'point(j,i-1)*b --> MF(0,1) --> titik atas
If i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 1))
Else
Red = Red + (CInt(.GetPixel(j, i - 1).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i - 1).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i - 1).B) * MF(0, 1))
End If
'point(j+1,i-1)*c --> MF(0,2) --> titik kanan atas
If j + 1 > .Width - DY - 1 And i - 1 > 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i - 1).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j + 1, i - 1).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i - 1).B) * MF(0, 2))
End If
'point(j-1,i)*d --> MF(1,0) --> titik kiri
If j - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j - 1, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i).B) * MF(1, 0))
End If
'point(j+1,i)*f --> MF(1,2) --> titik kanan
If j + 1 > .Width - DY - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j + 1, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i).B) * MF(1, 2))
End If
'point(j-1,i+1)*g --> MF(2,0) --> titik kiri bawah
If j - 1 < 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i + 1).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j - 1, i + 1).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i + 1).B) * MF(2, 0))
End If
'point(j,i+1)*g --> MF(2,1) --> titik bawah
If i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 1))
Else
Red = Red + (CInt(.GetPixel(j, i + 1).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i + 1).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i + 1).B) * MF(2, 1))
End If
'point(j+1,i+1)*h --> MF(2,2) --> titik kanan bawah
If j + 1 > .Width - DY - 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i + 1).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j + 1, i + 1).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i + 1).B) * MF(2, 2))
End If
'normalisasi
If Red < 0 Then
Red = 0
Else
If Red > 255 Then
Red = 255
End If
End If
If Green < 0 Then
Green = 0
Else
If Green > 255 Then
Green = 255
End If
End If
If Blue < 0 Then
Blue = 0
Else
If Blue > 255 Then
Blue = 255
End If
End If
'simpan warna hasil smoothing ke point j,i
gambar.SetPixel(j, i, Color.FromArgb(Red, Green, Blue))
Next
If i Mod 10 = 0 Then
Pic1.Invalidate()
Me.Text = Int(100 * i / (Pic1.Image.Height - 2)).ToString & "%"
Pic1.Refresh()
End If
Next
End With
Pic1.Refresh()
Me.Text = "Proses Low Pass Image berhasil"
End Sub
Dim MF(2, 2) As Double
'MaskFilter.Show()
'matriks Filter
' 0 1 2
'0 a b c
'1 d e f
'2 g h i
'Filter smoothing
MF(0, 0) = 0 'a
MF(0, 1) = -1 'b
MF(0, 2) = 0 'c
MF(1, 0) = -1 'd
MF(1, 1) = 4 'e
MF(1, 2) = -1 'f
MF(2, 0) = 0 'g
MF(2, 1) = -1 'h
MF(2, 2) = 0 'i
gambar = New Bitmap(Pic1.Image)
Pic2.Image = gambar
Dim tempbmp As New Bitmap(Pic1.Image)
Dim DX As Integer = 1
Dim DY As Integer = 1
Dim Red As Integer, Green As Integer, Blue As Integer
Dim i As Integer, j As Integer
Dim k As Integer, l As Integer 'untuk mask border
With gambar
For i = DX To .Height - DX - 1
For j = DY To .Width - DY - 1
'proses matriks filter
'point(j,i)*e --> titik tengah
Red = CInt(.GetPixel(j, i).R) * MF(1, 1)
Green = CInt(.GetPixel(j, i).G) * MF(1, 1)
Blue = CInt(.GetPixel(j, i).B) * MF(1, 1)
'proses titik tetangga
'point(j-1,i-1)*a--> MF(0,0)--> titik kiri atas
If j - 1 < 1 And i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i - 1).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j - 1, i - 1).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i - 1).B) * MF(0, 0))
End If
'point(j,i-1)*b --> MF(0,1) --> titik atas
If i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 1))
Else
Red = Red + (CInt(.GetPixel(j, i - 1).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i - 1).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i - 1).B) * MF(0, 1))
End If
'point(j+1,i-1)*c --> MF(0,2) --> titik kanan atas
If j + 1 > .Width - DY - 1 And i - 1 > 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i - 1).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j + 1, i - 1).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i - 1).B) * MF(0, 2))
End If
'point(j-1,i)*d --> MF(1,0) --> titik kiri
If j - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j - 1, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i).B) * MF(1, 0))
End If
'point(j+1,i)*f --> MF(1,2) --> titik kanan
If j + 1 > .Width - DY - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j + 1, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i).B) * MF(1, 2))
End If
'point(j-1,i+1)*g --> MF(2,0) --> titik kiri bawah
If j - 1 < 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i + 1).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j - 1, i + 1).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i + 1).B) * MF(2, 0))
End If
'point(j,i+1)*g --> MF(2,1) --> titik bawah
If i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 1))
Else
Red = Red + (CInt(.GetPixel(j, i + 1).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i + 1).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i + 1).B) * MF(2, 1))
End If
'point(j+1,i+1)*h --> MF(2,2) --> titik kanan bawah
If j + 1 > .Width - DY - 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i + 1).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j + 1, i + 1).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i + 1).B) * MF(2, 2))
End If
'normalisasi
If Red < 0 Then
Red = 0
Else
If Red > 255 Then
Red = 255
End If
End If
If Green < 0 Then
Green = 0
Else
If Green > 255 Then
Green = 255
End If
End If
If Blue < 0 Then
Blue = 0
Else
If Blue > 255 Then
Blue = 255
End If
End If
'simpan warna hasil smoothing ke point j,i
gambar.SetPixel(j, i, Color.FromArgb(Red, Green, Blue))
Next
If i Mod 10 = 0 Then
Pic1.Invalidate()
Me.Text = Int(100 * i / (Pic1.Image.Height - 2)).ToString & "%"
Pic1.Refresh()
End If
Next
End With
Pic1.Refresh()
Me.Text = "Proses Low Pass Image berhasil"
End Sub
Tampilannya :
12. HIGH PASS
Listing Program :
Private Sub HighPassToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles HighPassToolStripMenuItem.Click
Dim MF(2, 2) As Double
'MaskFilter.Show()
'matriks Filter
' 0 1 2
'0 a b c
'1 d e f
'2 g h i
'Filter smoothing
MF(0, 0) = -1 'a
MF(0, 1) = -1 'b
MF(0, 2) = -1 'c
MF(1, 0) = -1 'd
MF(1, 1) = 8 'e
MF(1, 2) = -1 'f
MF(2, 0) = -1 'g
MF(2, 1) = -1 'h
MF(2, 2) = -1 'i
gambar = New Bitmap(Pic1.Image)
Pic2.Image = gambar
Dim tempbmp As New Bitmap(Pic1.Image)
Dim DX As Integer = 1
Dim DY As Integer = 1
Dim Red As Integer, Green As Integer, Blue As Integer
Dim i As Integer, j As Integer
Dim k As Integer, l As Integer 'untuk mask border
With gambar
For i = DX To .Height - DX - 1
For j = DY To .Width - DY - 1
'proses matriks filter
'point(j,i)*e --> titik tengah
Red = CInt(.GetPixel(j, i).R) * MF(1, 1)
Green = CInt(.GetPixel(j, i).G) * MF(1, 1)
Blue = CInt(.GetPixel(j, i).B) * MF(1, 1)
'proses titik tetangga
'point(j-1,i-1)*a--> MF(0,0)--> titik kiri atas
If j - 1 < 1 And i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i - 1).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j - 1, i - 1).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i - 1).B) * MF(0, 0))
End If
'point(j,i-1)*b --> MF(0,1) --> titik atas
If i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 1))
Else
Red = Red + (CInt(.GetPixel(j, i - 1).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i - 1).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i - 1).B) * MF(0, 1))
End If
'point(j+1,i-1)*c --> MF(0,2) --> titik kanan atas
If j + 1 > .Width - DY - 1 And i - 1 > 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i - 1).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j + 1, i - 1).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i - 1).B) * MF(0, 2))
End If
'point(j-1,i)*d --> MF(1,0) --> titik kiri
If j - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j - 1, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i).B) * MF(1, 0))
End If
'point(j+1,i)*f --> MF(1,2) --> titik kanan
If j + 1 > .Width - DY - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j + 1, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i).B) * MF(1, 2))
End If
'point(j-1,i+1)*g --> MF(2,0) --> titik kiri bawah
If j - 1 < 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i + 1).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j - 1, i + 1).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i + 1).B) * MF(2, 0))
End If
'point(j,i+1)*g --> MF(2,1) --> titik bawah
If i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 1))
Else
Red = Red + (CInt(.GetPixel(j, i + 1).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i + 1).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i + 1).B) * MF(2, 1))
End If
'point(j+1,i+1)*h --> MF(2,2) --> titik kanan bawah
If j + 1 > .Width - DY - 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i + 1).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j + 1, i + 1).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i + 1).B) * MF(2, 2))
End If
'normalisasi
If Red < 0 Then
Red = 0
Else
If Red > 255 Then
Red = 255
End If
End If
If Green < 0 Then
Green = 0
Else
If Green > 255 Then
Green = 255
End If
End If
If Blue < 0 Then
Blue = 0
Else
If Blue > 255 Then
Blue = 255
End If
End If
'simpan warna hasil smoothing ke point j,i
gambar.SetPixel(j, i, Color.FromArgb(Red, Green, Blue))
Next
If i Mod 10 = 0 Then
Pic1.Invalidate()
Me.Text = Int(100 * i / (Pic1.Image.Height - 2)).ToString & "%"
Pic1.Refresh()
End If
Next
End With
Pic1.Refresh()
Me.Text = "Proses High Pass Image berhasil"
End Sub
Dim MF(2, 2) As Double
'MaskFilter.Show()
'matriks Filter
' 0 1 2
'0 a b c
'1 d e f
'2 g h i
'Filter smoothing
MF(0, 0) = -1 'a
MF(0, 1) = -1 'b
MF(0, 2) = -1 'c
MF(1, 0) = -1 'd
MF(1, 1) = 8 'e
MF(1, 2) = -1 'f
MF(2, 0) = -1 'g
MF(2, 1) = -1 'h
MF(2, 2) = -1 'i
gambar = New Bitmap(Pic1.Image)
Pic2.Image = gambar
Dim tempbmp As New Bitmap(Pic1.Image)
Dim DX As Integer = 1
Dim DY As Integer = 1
Dim Red As Integer, Green As Integer, Blue As Integer
Dim i As Integer, j As Integer
Dim k As Integer, l As Integer 'untuk mask border
With gambar
For i = DX To .Height - DX - 1
For j = DY To .Width - DY - 1
'proses matriks filter
'point(j,i)*e --> titik tengah
Red = CInt(.GetPixel(j, i).R) * MF(1, 1)
Green = CInt(.GetPixel(j, i).G) * MF(1, 1)
Blue = CInt(.GetPixel(j, i).B) * MF(1, 1)
'proses titik tetangga
'point(j-1,i-1)*a--> MF(0,0)--> titik kiri atas
If j - 1 < 1 And i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i - 1).R) * MF(0, 0))
Green = Green + (CInt(.GetPixel(j - 1, i - 1).G) * MF(0, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i - 1).B) * MF(0, 0))
End If
'point(j,i-1)*b --> MF(0,1) --> titik atas
If i - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 1))
Else
Red = Red + (CInt(.GetPixel(j, i - 1).R) * MF(0, 1))
Green = Green + (CInt(.GetPixel(j, i - 1).G) * MF(0, 1))
Blue = Blue + (CInt(.GetPixel(j, i - 1).B) * MF(0, 1))
End If
'point(j+1,i-1)*c --> MF(0,2) --> titik kanan atas
If j + 1 > .Width - DY - 1 And i - 1 > 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(0, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i - 1).R) * MF(0, 2))
Green = Green + (CInt(.GetPixel(j + 1, i - 1).G) * MF(0, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i - 1).B) * MF(0, 2))
End If
'point(j-1,i)*d --> MF(1,0) --> titik kiri
If j - 1 < 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i).R) * MF(1, 0))
Green = Green + (CInt(.GetPixel(j - 1, i).G) * MF(1, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i).B) * MF(1, 0))
End If
'point(j+1,i)*f --> MF(1,2) --> titik kanan
If j + 1 > .Width - DY - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(1, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i).R) * MF(1, 2))
Green = Green + (CInt(.GetPixel(j + 1, i).G) * MF(1, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i).B) * MF(1, 2))
End If
'point(j-1,i+1)*g --> MF(2,0) --> titik kiri bawah
If j - 1 < 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 0))
Else
Red = Red + (CInt(.GetPixel(j - 1, i + 1).R) * MF(2, 0))
Green = Green + (CInt(.GetPixel(j - 1, i + 1).G) * MF(2, 0))
Blue = Blue + (CInt(.GetPixel(j - 1, i + 1).B) * MF(2, 0))
End If
'point(j,i+1)*g --> MF(2,1) --> titik bawah
If i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 1))
Else
Red = Red + (CInt(.GetPixel(j, i + 1).R) * MF(2, 1))
Green = Green + (CInt(.GetPixel(j, i + 1).G) * MF(2, 1))
Blue = Blue + (CInt(.GetPixel(j, i + 1).B) * MF(2, 1))
End If
'point(j+1,i+1)*h --> MF(2,2) --> titik kanan bawah
If j + 1 > .Width - DY - 1 And i + 1 > .Height - DX - 1 Then 'jika out of border ambil nilai tengah/point(x,y)
Red = Red + (CInt(.GetPixel(j, i).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j, i).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j, i).B) * MF(2, 2))
Else
Red = Red + (CInt(.GetPixel(j + 1, i + 1).R) * MF(2, 2))
Green = Green + (CInt(.GetPixel(j + 1, i + 1).G) * MF(2, 2))
Blue = Blue + (CInt(.GetPixel(j + 1, i + 1).B) * MF(2, 2))
End If
'normalisasi
If Red < 0 Then
Red = 0
Else
If Red > 255 Then
Red = 255
End If
End If
If Green < 0 Then
Green = 0
Else
If Green > 255 Then
Green = 255
End If
End If
If Blue < 0 Then
Blue = 0
Else
If Blue > 255 Then
Blue = 255
End If
End If
'simpan warna hasil smoothing ke point j,i
gambar.SetPixel(j, i, Color.FromArgb(Red, Green, Blue))
Next
If i Mod 10 = 0 Then
Pic1.Invalidate()
Me.Text = Int(100 * i / (Pic1.Image.Height - 2)).ToString & "%"
Pic1.Refresh()
End If
Next
End With
Pic1.Refresh()
Me.Text = "Proses High Pass Image berhasil"
End Sub
Tampilannya :
13. ROTATE 180
Listing Program :
Private Sub Rotate180ToolStripMenuItem_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Rotate180ToolStripMenuItem.Click
Dim pb, pc As Integer
Dim vM, vH, vB As Double
Dim gambar3 As Bitmap = New Bitmap(Pic1.Image)
With gambar
For pb = .Height - 1 To 0 Step -1
For pc = .Width - 1 To 0 Step -1
vM = .GetPixel(pc, pb).R
vH = .GetPixel(pc, pb).G
vB = .GetPixel(pc, pb).B
gambar3.SetPixel(.Width - 1 - pc, .Height - 1 - pb, Color.FromArgb(vM, vH, vB))
Next
Pic2.Image = gambar3
Pic2.Refresh()
Next
End With
End Sub
End Class
Dim pb, pc As Integer
Dim vM, vH, vB As Double
Dim gambar3 As Bitmap = New Bitmap(Pic1.Image)
With gambar
For pb = .Height - 1 To 0 Step -1
For pc = .Width - 1 To 0 Step -1
vM = .GetPixel(pc, pb).R
vH = .GetPixel(pc, pb).G
vB = .GetPixel(pc, pb).B
gambar3.SetPixel(.Width - 1 - pc, .Height - 1 - pb, Color.FromArgb(vM, vH, vB))
Next
Pic2.Image = gambar3
Pic2.Refresh()
Next
End With
End Sub
End Class
Tampilannya :
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