Live Chat Icon For mobile
Live Chat Icon

How do I create a ‘Negative’ representation of my image?

Platform: WinForms| Category: Bitmaps and Images

This is quite simple actually. All you need to do is determine the color of a given pixel, and then subtract the RGB values from 255 (the maximum) and then reset the pixel.

Here is the pertinent code.

[Code - C#]

for(int x = 0; x < mybitmap.Width; x++)
	for(int y = 0; y < mybitmap.Height; y++)
		//get the current color of the pixel
		System.Drawing.Color c = mybitmap.GetPixel(x,y);
		mybitmap.SetPixel(x,y, System.Drawing.Color.FromArgb(255 - c.R, 255 - c.G, 255 - c.B));

Note: This modifies the existing image, so work on a copy if you want to maintain the original.

Share with

Share on twitter
Share on facebook
Share on linkedin

Related FAQs

Couldn't find the FAQs you're looking for?

Please submit your question and answer.