Determining colour mix of a solid colour image. 1

[rhofing]

Hello, I need to be able to derive which colours, and their percentages, that make up a solid color image (a square) for a chemical analysis application I am writing in VB.NET. For example, a pink square. I need to be able to determine which colors are being used (red and white in this case) and which percentage of each exist. Can someone point me to a code source/sample/control that will do this (or show me how it can be done)?

Also, can anyone suggest a scanner control? I only need very basic functionality to scan a chemical stip (it will always be a square). I do not need to do anything with it, like crop, convert, transform, etc. All I need to do is scan it and then determine the colours involved and their percentages (as I explain above).

Thanks!

Ric

 

[JohnYingling]

Not red and white, Red, Green and Blue. Start with System.Drawing namespace.

http://www.VBResizer.com

Forms/Controls Resizing/Tabbing

http://www.VBCompare.com

Compare Code

http://www.VBSortGen.com

Generate Sort Class in VB

http://www.Vbcompare.com/Check.Htm(1979

Check To MS)

 

[RiverGuy]

If you have a Bitmap object named "bmp", you can find the color of a pixel:

Dim R As Integer
Dim G As Integer
Dim B As Integer
R = bmp.GetPixel(1, 1).R()
G = bmp.GetPixel(1, 1).G()
B = bmp.GetPixel(1, 1).B()