image-js/lib/morphology/clearBorder.js

Image processing and manipulation in JavaScript

import { borderIterator } from '../utils/borderIterator.js';
import { multipleFloodFill } from './multipleFloodFill.js';
/**
 * Set the pixels connected to the border of the mask to zero. You can chose to allow corner connection of not with the `allowCorners` option.
 * @param mask - The mask to process.
 * @param options - Clear border options.
 * @returns The image with cleared borders.
 */
export function clearBorder(mask, options = {}) {
    const { allowCorners = false, out, color = 'white' } = options;
    return multipleFloodFill(mask, {
        startPixels: borderIterator(mask),
        startPixelValue: color === 'white' ? 1 : 0,
        newPixelValue: color === 'white' ? 0 : 1,
        allowCorners,
        out,
    });
}
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