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Jaded-Encoding-Thaumaturgy / vs-scale

VapourSynth (de)scaling functions
MIT License
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Add borders param to descale #67

Closed LightArrowsEXE closed 1 year ago

LightArrowsEXE commented 1 year ago

Zewia linked this package in SeaDex earlier today, claiming it helps resolve issues with messy edges pretty well. It's probably a good idea to explore these claims and see whether we can incorporate them into our own descale tool if they appear beneficial.

LightArrowsEXE commented 1 year ago

Did a bit of testing, and the results seem pretty alright. 

    descaled1 = BicubicSharp.descale(clip_y, **de_args)
    descaled2 = bdescale(clip_y, c=1, left=3, right=3, bottom=0, top=0, **de_args)

image image

While they're not perfect, this alone seems to help a lot in suppressing ugly edge ringing. We should perform more testing, but for now I'm happy enough with these results to urge we add a similar functionality to descale.