Talk:AWarpSharpDering

Revision as of 15:50, 14 June 2015

# # AWarpSharpDering by Kurt Bernhard Pruenner # # Tries to clean up slight ringing around edges by heavily AWarpSharp-ing the # image and then applying it only to the areas where the difference is small # enough so detail isn't destroyed. # # Currently only processes the chroma, as that's what sharpeners that cause the # ringing in the first place operate on. # # depth ........ Depth of the AWarpSharpening # # diffthresh ... differences between the source and the sharpened clip larger # than this will not be touched; the smaller the difference the # more of the sharpened clip will be used # # lumathresh ... since the ringing is mostly notable in bright places this # threshold will prevent dark areas from being hit too hard, so # for instance linework will be preserved # # debug ........ 0 - normal operation # 1 - return sharpened clip # 2 - return diffthresh mask # 3 - return lumathresh mask # 4 - return combined mask # 5 - return source (for comparison) # function AWarpSharpDering(clip source, float "depth",int "diffthresh",int "lumathresh",int "debug") { depth=Default(depth,32.0) diffthresh=Default(diffthresh,8) lumathresh=Default(lumathresh,32) debug=Default(debug,0) sharpened=source.AWarpSharp(depth=depth,blurlevel=2,cm=0,bm=0) # absolute differences mask diffmask=YV12LUTxy(source,sharpened,yexpr="x y - x y > *",Y=3,U=1,V=1).Levels(0,0.5,diffthresh,255,0,coring=false) # source-luma mask lumamask=source.Deflate(Y=3,U=1,V=1).Levels(16,0.5,16+lumathresh,0,255,coring=false) # both masks multiplied mask=YV12LUTxy(lumamask,diffmask,yexpr="x y * 255 /",Y=3,U=1,V=1).Deflate() result=MergeChroma(MaskedMerge(source,sharpened,mask,Y=3,U=1,V=1),source) result=debug != 1 ? result : sharpened result=debug != 2 ? result : diffmask.Levels(0,1.0,255,16,240,coring=false).MergeChroma(source.BlankClip(color_yuv=$808080)) result=debug != 3 ? result : lumamask.Levels(0,1.0,255,16,240,coring=false).MergeChroma(source.BlankClip(color_yuv=$808080)) result=debug != 4 ? result : mask.Levels(0,1.0,255,16,240,coring=false).MergeChroma(source.BlankClip(color_yuv=$808080)) result=debug != 5 ? result : source return result }