Changing specific color everwhere in image

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Nomlas User Profile View All Posts by User View Thanks		#1 Posted : Thursday, May 31, 2007 12:00:18 AM(UTC)
Rank: Member Groups: Member Joined: 4/7/2007(UTC) Posts: 4		Sorry for the simple questions, but I'm nearly done with my evaluation.... How do I change all occurrances of one RGB value to another? I'm a bit confused about whether palettes need to be used and how to create them if they don't exist. Tried this from a sample, but I get an error about operation requiring a palette. Code: `Dim I As Integer BitMapViewer.Bitmap.Data.ConvertTo8bppIndexed DitheringTypeNone, , , , , PaletteTypeGrayscale BitMapViewer.Bitmap.ColorTreatment = ColorTreatmentColorref BitMapViewer.AutoUpdate = False For I = 1 To BitMapViewer.Bitmap.Data.Palette.Count - 2 BitMapViewer.Bitmap.Data.Palette(I) = RGB(I, I, 0) Next BitMapViewer.AutoUpdate = True BitMapViewer.Refresh` Thanks again. Edited by user Monday, February 25, 2008 7:00:43 PM(UTC) \| Reason: Not specified

Dmitry User Profile View All Posts by User View Thanks		#2 Posted : Thursday, May 31, 2007 4:51:21 PM(UTC)
Rank: Advanced Member Groups: Member, Administration, Moderator Joined: 8/3/2003(UTC) Posts: 1,070 Thanks: 1 times Was thanked: 12 time(s) in 12 post(s)		Hello, If you want to replace one color with another in an image, you should read color data from every pixel, and change it (if it is required). The fastest way to perform this task is to use direct access to pixel data. This approach is discussed in Accessing to Pixel Data article. Edited by user Tuesday, December 15, 2009 10:43:05 AM(UTC) \| Reason: Not specified
		Sincerely yours, Dmitry Sevostyanov Follow Aurigma on Twitter!

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