Invert an Image : Image Operation « 2D Graphics « VB.Net Tutorial

Home
VB.Net Tutorial
1.Language Basics
2.Data Type
3.Operator
4.Statements
5.Date Time
6.Class Module
7.Development
8.Collections
9.Generics
10.Attributes
11.Event
12.LINQ
13.Stream File
14.GUI
15.GUI Applications
16.Windows Presentation Foundation
17.2D Graphics
18.I18N Internationlization
19.Reflection
20.Regular Expressions
21.Security
22.Socket Network
23.Thread
24.Windows
25.XML
26.Database ADO.net
27.Design Patterns
VB.Net
VB.Net by API
VB.Net Tutorial » 2D Graphics » Image Operation 
17.49.8.Invert an Image
Invert an Image
Imports System.Drawing
Imports System.Drawing.Drawing2D
Imports System.Windows.Forms
Imports System.Math

public class RevertImage
   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 bm As New Bitmap("yourfile.jpg")
        e.Graphics.DrawImage(bm, 00400400)

        Dim dest_bm As New Bitmap("yourfile.jpg")

        InvertImage(dest_bm)
        
        e.Graphics.DrawImage(dest_bm, 4000400400)

  End Sub
    Private Sub InvertImage(ByVal bm As Bitmap)
        For y As Integer = To bm.Height - 1
            For x As Integer = To bm.Width - 1
                Dim clr As Color = bm.GetPixel(x, y)
                clr = Color.FromArgb(255,255 - clr.R, 255 - clr.G, 255 - clr.B)

                bm.SetPixel(x, y, clr)
            Next x
        Next y
    End Sub
  Public Sub New()
   
    MyBase.New()
    Me.AutoScaleBaseSize = New System.Drawing.Size(513)
    Me.ClientSize = New System.Drawing.Size(292273)
    Me.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen

  End Sub

End Class
17.49.Image Operation
17.49.1.Rotate an Image
17.49.2.Mirror an Image
17.49.3.Move an image and paintMove an image and paint
17.49.4.Scale an imageScale an image
17.49.5.Scale image with different Graphics UnitsScale image with different Graphics Units
17.49.6.Skew imageSkew image
17.49.7.Make an image transparentMake an image transparent
17.49.8.Invert an ImageInvert an Image
17.49.9.Invert an Image unsafeInvert an Image unsafe
17.49.10.Zoom ImageZoom Image
17.49.11.Zoom and Skew an ImageZoom and Skew an Image
17.49.12.Skew an ImageSkew an Image
www.java2java.com | Contact Us
Copyright 2009 - 12 Demo Source and Support. All rights reserved.
All other trademarks are property of their respective owners.