From:	gautam AT interlog DOT com (Gautam N. Lad)
Newsgroups:	comp.os.msdos.djgpp
Subject:	Filtering Image Algorithm
Date:	Sat, 13 Dec 97 03:31:39 GMT
Organization:	InterLog Internet Services
Lines:	23
Message-ID:	<66supo$p8j$2@news.interlog.com>
NNTP-Posting-Host:	ip220-176.cc.interlog.com
To:	djgpp AT delorie DOT com
DJ-Gateway:	from newsgroup comp.os.msdos.djgpp

Hi,
Can someone tell me how to apply a filter (something like a 5x5 filter) to an 
image?  I saw a site that shows it, but I don't quite understand it.  I just want to 
modify a pixel's RGB values, and obtain a resulting RGB value, and draw that 
coloured pixel.  I have access to 24-BIT video mode, so I don't have to care about 
a palette, just do something like this:

putpixel(screen, 2, 4, makecol(r, g, b));	// this is put a pixel on screen at 2, 
			  	// 4 with colour returned by 
				// makecol(r,g,b);

Oh, I'm using DJGPP and Allegro 3.0 (Beta).
Please help!
Bye!

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Gautam N. Lad
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E-Mail:	gautam AT interlog DOT com
Website:	http://www.interlog.com/~gautam

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