vapoursynth-hysteresis

Hysteresis filter as a VapourSynth plugin, with the same API as misc.Hysteresis() from vs-miscfilters-obsolete.

Description from vs-miscfilters-obsolete:

Grows the mask in clipa into the mask in clipb. This is an equivalent of the Avisynth function mt_hysteresis. Note that both clips are expected to be in the typical mask range which means that all planes have to be in the 0-1 range for floating point formats.

Specifically, Hysteresis takes two bi-level masks clipa and clipb and generates another bi-level mask clip. Both clipa and clipb must have the same dimensions and format, and the output clip will also have that format.

If we treat the planes of the clips as representing 8-neighbourhood undirected 2D grid graphs, for each of the connected components in clipb, the whole component is copied to the output plane if and only if one of its pixels is also marked in the corresponding plane from clipa. The argument planes controls which planes to process, with the default being all. Any unprocessed planes will be copied from the corresponding plane in clipa.

Install

pip install vapoursynth-hysteresis

API

hysteresis.Hysteresis(
    clipa: vs.VideoNode,
    clipb: vs.VideoNode,
    planes: list[int] = [0, 1, 2]
)

Build

Rust v1.91.0-nightly and cargo may be used to build the project. Older versions will likely work fine but they aren't explicitly supported.

$ git clone https://github.com/sgt0/vapoursynth-hysteresis.git
$ cd vapoursynth-hysteresis

# Debug build.
$ cargo build

# Release (optimized) build.
$ cargo build --release

# Release build optimized for the host CPU.
$ RUSTFLAGS="-C target-cpu=native" cargo build --release

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vapoursynth-hysteresis 1.2.0

vapoursynth-hysteresis

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