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最初由 a-ha 发布
:eek: 这样啊。。。
那你能给我讲讲后面那俩参数啥意思吗:o
Usage of asharp :
First, add the following line in your .avs script :
LoadPlugin("asharp.dll") # because Avisynth 2.5 doesn't support Autoloading yet
To do simple unsharp masking with a strength of 2x :
asharp(2,0)
To try some adaptive sharpenning :
asharp(2,4)
Suggestion for divx anime decoding :
asharp(2.5,4.5,0.25,hqbf=true)
Syntax :
asharp(float "T", float "D", float "B", bool "hqbf")
T : unsharp masking threshold. 0 will do nothing. (value clamped to [nothing=0..32])
1 is like 32 with ffdsow/Vdub unsharp mask filter, it'll enhance contrast 1x
default is T=2
D : adaptive sharpenning strength. (value clamped to [disabled=0..16])
set to 0 to disable
if D>0, adaptive thresholding is enabled.
the threshold is adapted for each pixel (bigger for edges)
if adaptive sharpenning is enabled, T acts like a maximum.
default is D=4
B : block adaptive sharpenning. (value clamped to [disabled=0..4])
set to a negative value to disable.
if B>=0, block adaptive sharpenning is enabled.
it acts very simply, by lowering the threshold around DCT-blocks edges.
if you use it, avoid any non mod8 cropping between the decoder and asharp.
(it works only wit adaptive sharpenning, when D>0)
default is B=-1 (disabled)
hqbf : high quality block filtering. (aka block based adaptive thresholding.)
