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Old 23rd May 2009, 22:36   #1  |  Link
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Join Date: Aug 2007
Posts: 374
aWarpSharp2 rewrite of aWarpSharp

Current version: 2012.03.28

Previous versions:

aWarpSharp by MarcFD is nice plugin (especially for tasks like halo removing), but has some bugs and like to produce green artifacts on the image borders. Other WarpSharp plugins produced worse results for me, so i decided to rewrite aWarpSharp algorithm with better handling of borders and optimization for modern CPUs.

Besides complete algorithm aWarpSharp2, its parts are also available as aSobel, aBlur, aWarp and aWarp4. This way you can do advanced edge mask filtering (like MDegrain) before passing it to warp stage to get more stable result.

Good usage examples:
aWarp4(Spline36Resize(width*4, height*4, 0.375, 0.375), aSobel().aBlur(), depth=3)
aWarp4(nnedi3_rpow2(rfactor=2).Spline36Resize(width*4, height*4, 0.25, 0.25), aSobel().aBlur(), depth=3)
aWarp4(nnedi3_rpow2(rfactor=2).nnedi3_rpow2(rfactor=2), aSobel().aBlur(), depth=2)
Note that upsampling for aWarp4 should be left-top aligned, so Spline36Resize(width*4, height*4) or nnedi3_rpow2(rfactor=4) won't produce correct results.

For options explanation and values mapping from used in aWarpSharp by MarcFD - read the included aWarpSharp.txt.

Binary patched Toon-v1.0 to use aWarpSharp2 instead of aWarpSharp: Toon-v1.1

Last edited by SEt; 28th March 2012 at 02:07.
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