Sharpen 2D ?
Blitz3D Forums/Blitz3D Programming/Sharpen 2D ?
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| Can someone point me to some sourcecode containing a sharpen 2D algorithm? Preferably Blitz3D. Thanks! |
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| There's an algo here in some script/language but looks pretty easy to convert to blitz. No idea if it actually works, though. :) |
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| Thanks a lot, looks dead easy. I'll post it in the archives if it works. |
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| It really works, not bad at all. http://www.blitzbasic.com/codearcs/codearcs.php?code=1540 Maybe it would be better to convert RGB to HSB for the sharpen process, because the way it works now, it slighty alters the color tone. This effect is not that obvious, so for a normal sharpen operation, it doesn't matter that much. Maybe I'll fix this later. EDIT: Well just added a HSL version, but due to the convertion RGB>HSL>RGB it's real slow. |
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| Nice one. I must admit I'm a little surprised it works well as the original algo looks so simplistic. :) |
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| Yes, the original code does only this: lum3#=lum1#+(amount#*(lum2#-lum1#)) where lum1 is the luminance of a pixel and lum2 the luminance of the next pixel at the upper left side (x-1,y-1). And even this original thing is almost as good as my tweaked version. |
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