Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
public class GrayScaleImage
public Shared Sub Main
Application.Run(New Form1)
End Sub
End class
public class Form1
Inherits System.Windows.Forms.Form
Protected Overrides Sub OnPaint(ByVal e As PaintEventArgs)
Dim g As Graphics = Me.CreateGraphics()
g.Clear(Me.BackColor)
Dim curBitmap As New Bitmap("yourfile.jpg")
g.DrawImage(curBitmap, 0, 0, curBitmap.Width, curBitmap.Height) '
Dim i As Integer
For i = 0 To 100
Dim j As Integer
For j = 0 To 100
Dim curColor As Color = curBitmap.GetPixel(i, j)
Dim ret As Integer = (curColor.R + curColor.G + curColor.B) / 3
'curBitmap.SetPixel(i, j, Color.FromArgb(ret, ret, ret))
Next j
Next i
g.DrawImage(curBitmap, 0, 0, curBitmap.Width, curBitmap.Height)
g.Dispose()
End Sub
Public Sub New()
MyBase.New()
Me.AutoScaleBaseSize = New System.Drawing.Size(5, 13)
Me.ClientSize = New System.Drawing.Size(292, 273)
Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen
End Sub
End Class
