image-in-browser/lib/filter/dither-kernel.js

Package for encoding / decoding images, transforming images, applying filters, drawing primitives on images on the client side (no need for server Node.js)

export var DitherKernel;
(function (DitherKernel) {
    DitherKernel[DitherKernel["none"] = 0] = "none";
    DitherKernel[DitherKernel["falseFloydSteinberg"] = 1] = "falseFloydSteinberg";
    DitherKernel[DitherKernel["floydSteinberg"] = 2] = "floydSteinberg";
    DitherKernel[DitherKernel["stucki"] = 3] = "stucki";
    DitherKernel[DitherKernel["atkinson"] = 4] = "atkinson";
})(DitherKernel || (DitherKernel = {}));
export const DitherKernels = [
    [
        [0, 0, 0],
        [0, 0, 0],
        [0, 0, 0],
    ],
    [
        [3 / 8, 1, 0],
        [3 / 8, 0, 1],
        [2 / 8, 1, 1],
    ],
    [
        [7 / 16, 1, 0],
        [3 / 16, -1, 1],
        [5 / 16, 0, 1],
        [1 / 16, 1, 1],
    ],
    [
        [8 / 42, 1, 0],
        [4 / 42, 2, 0],
        [2 / 42, -2, 1],
        [4 / 42, -1, 1],
        [8 / 42, 0, 1],
        [4 / 42, 1, 1],
        [2 / 42, 2, 1],
        [1 / 42, -2, 2],
        [2 / 42, -1, 2],
        [4 / 42, 0, 2],
        [2 / 42, 1, 2],
        [1 / 42, 2, 2],
    ],
    [
        [1 / 8, 1, 0],
        [1 / 8, 2, 0],
        [1 / 8, -1, 1],
        [1 / 8, 0, 1],
        [1 / 8, 1, 1],
        [1 / 8, 0, 2],
    ],
];
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