AWarpsharp2/aWarp4
From Avisynth wiki
(Difference between revisions)
m (category) |
m (minor formatting) |
||
| Line 1: | Line 1: | ||
| − | + | {{FilterCat4|External_filters|Plugin_functions|Adjustment_filters|Sharpeners}} | |
| − | + | ||
'''Back to [[aWarpSharp2#Filters|aWarpSharp2]] ←''' | '''Back to [[aWarpSharp2#Filters|aWarpSharp2]] ←''' | ||
-------------------------------------------------- | -------------------------------------------------- | ||
| − | |||
<br> | <br> | ||
== Description == | == Description == | ||
| − | + | aWarp4 is designed for an even more custom warp-sharpening than [[AWarpsharp2/aWarp|aWarp]] allows. Unlike aWarp, this uses a 4x larger source clip than the edge mask. This is useful for improving the quality of the subpixel interpolation quality in the final step. Supersampling allows to produce a sharper result with lower {{Template:FuncDef|depth}}, which equals to less deformations. | |
| − | + | ||
<br> | <br> | ||
<br> | <br> | ||
| Line 14: | Line 12: | ||
<br> | <br> | ||
::{{Par2| |clip| |}} | ::{{Par2| |clip| |}} | ||
| − | + | :::Input clip; must be exactly 4 times the width and height of the edge mask clip. | |
<br> | <br> | ||
::{{Par2| |clip| |}} | ::{{Par2| |clip| |}} | ||
| − | + | :::Edge mask clip; usually the input clip processed by [[AWarpsharp2/aSobel|aSobel]] and followed by [[AWarpsharp2/aBlur|aBlur]]. | |
| − | + | :::If you want more stable results it's good idea to do anti-aliasing and temporal filtering on the edge mask before passing it to the warping stage. | |
<br> | <br> | ||
::{{Par2|depth|int|3}} | ::{{Par2|depth|int|3}} | ||
| − | + | :::Strength of the final warping. Negative values result in warping in opposite direction. | |
| − | + | :::Range: -128 to 127 | |
<br> | <br> | ||
::{{Par2|chroma|int|4}} | ::{{Par2|chroma|int|4}} | ||
| Line 61: | Line 59: | ||
<br> | <br> | ||
*The 4x upsampled clip should always be top-left aligned, so Spline36Resize(width*4, height*4) or nnedi3_rpow2(rfactor=4) '''will not''' produce correct results. | *The 4x upsampled clip should always be top-left aligned, so Spline36Resize(width*4, height*4) or nnedi3_rpow2(rfactor=4) '''will not''' produce correct results. | ||
| − | |||
<br> | <br> | ||
-------------------------------------------------------- | -------------------------------------------------------- | ||
'''Back to [[aWarpSharp2#Filters|aWarpSharp2]] ←''' | '''Back to [[aWarpSharp2#Filters|aWarpSharp2]] ←''' | ||
Revision as of 08:24, 21 September 2014
Back to aWarpSharp2 ←
Description
aWarp4 is designed for an even more custom warp-sharpening than aWarp allows. Unlike aWarp, this uses a 4x larger source clip than the edge mask. This is useful for improving the quality of the subpixel interpolation quality in the final step. Supersampling allows to produce a sharper result with lower depth, which equals to less deformations.
Syntax and Parameters
- aWarp4 (clip, clip, int "depth", int "chroma")
- clip =
- Input clip; must be exactly 4 times the width and height of the edge mask clip.
- clip =
- int depth = 3
- Strength of the final warping. Negative values result in warping in opposite direction.
- Range: -128 to 127
- int depth = 3
- int chroma = 4
- Processing mode for chroma planes (U and V):
- 0 : fill with zeroes
- 1 : don't care
- 2 : copy
- 3 : process
- 4 : guide by luma
- 5 : same as 3, but don't process luma
- 6 : same as 4, but don't process luma
- Processing mode for chroma planes (U and V):
- int chroma = 4
Examples
Correct usage examples:
- Using Spline36Resize to upscale:
input = AviSource("Blah.avi") input4x = input.Spline36Resize(width*4, height*4, src_left=0.375, src_top=0.375) edge_mask = input.aSobel(thresh=128, chroma=1).aBlur(blur=3, type=1, chroma=1)
aWarp4(input4x, edge_mask, depth=3, chroma=4)
The following example is written differently but is identical to the one above.
AviSource("Blah.avi") aWarp4(Spline36Resize(width*4, height*4, 0.375, 0.375), aSobel().aBlur())
- Using nnedi3_rpow2 and Spline36Resize to upscale:
input = AviSource("Blah.avi") input4x = input.nnedi3_rpow2(rfactor=2).Spline36Resize(width*4, height*4, 0.25, 0.25) edge_mask = input.aSobel().aBlur()
aWarp4(input4x, edge_mask)
- Using nnedi3_rpow2 to upscale:
input = AviSource("Blah.avi") input4x = input.nnedi3_rpow2(rfactor=2).nnedi3_rpow2(rfactor=2) edge_mask = input.aSobel().aBlur()
aWarp4(input4x, edge_mask, depth=2)
- The 4x upsampled clip should always be top-left aligned, so Spline36Resize(width*4, height*4) or nnedi3_rpow2(rfactor=4) will not produce correct results.
Back to aWarpSharp2 ←
