Bitmap from RGB to graysclae

Question

I need to convert pictureBox1.Image from RGB to Grayscale I'm uses this x=(byte)((cc.B*0.28+cc.G*0.66+cc.R*0.51)/(0.28+0.66+0.51)); cc=Color.FromArgb(xxx); but it doesn't correct. Sorry for my bed English

shabonaa · Answer

as nobrainer saied the gray scale is the average of the three colors

bilnaad · Answer

ow sorry. It wasn't complete.... byte gray = (byte)( (color.R + color.G + color.B) / 3); Color grayColor = Color.FromArgb(gray gray gray);

bilnaad · Answer

this will help you. gray = (color.R + color.G + color.B) / 3;

icemanind · Answer

The .NET framework has methods for automatically converting to grayscale build right into GDI+. Check out this article: http://www.codeproject.com/vb/net/colormatrix.asp