Berikut Listing Programnya :
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 = "JPG|*.Jpg|BMP|*.bmp"
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 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
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
Private Sub RotateToolStripMenuItem_Click(ByVal sender As
System.Object, ByVal e As
System.EventArgs) Handles
RotateToolStripMenuItem.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
gambar = gambar3
End Sub
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
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
Private Sub KeluarToolStripMenuItem_Click(ByVal sender As
System.Object, ByVal e As
System.EventArgs) Handles
KeluarToolStripMenuItem.Click
End
End Sub
End Class
Hasil
Program :
- Citra Grayscale
- Citra Grayscale
-
Citra brigtines
-
Citra Biner
-
