image-js/lib/roi/getMask.js

Image processing and manipulation in JavaScript

import { Mask } from '../Mask.js';
/**
 * Generate a mask of an ROI.
 * @param roi - The ROI to generate a mask for.
 * @param options - Get mask options.
 * @returns The ROI mask.
 */
export function getMask(roi, options = {}) {
    const { solidFill = false } = options;
    const mask = new Mask(roi.width, roi.height, { origin: roi.origin });
    for (let row = 0; row < roi.height; row++) {
        for (let column = 0; column < roi.width; column++) {
            if (roi.getMapValue(roi.origin.column + column, roi.origin.row + row) ===
                roi.id) {
                mask.setBit(column, row, 1);
            }
            else {
                mask.setBit(column, row, 0);
            }
        }
    }
    if (solidFill) {
        mask.solidFill({ out: mask });
    }
    return mask;
}
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