image-js/lib/roi/getRois.js

Image processing and manipulation in JavaScript

import { match } from 'ts-pattern';
import { computeRois } from './computeRois.js';
export const RoiKind = {
    BLACK: 'black',
    WHITE: 'white',
    BW: 'bw',
};
/**
 * Return an array of ROIs matching the options.
 * @param roiMapManager - The ROI map manager containing the ROIs.
 * @param options - Get ROIs options.
 * @returns The array of ROIs.
 */
export function getRois(roiMapManager, options = {}) {
    const { minSurface = 0, maxSurface = Number.MAX_SAFE_INTEGER, kind = 'white', } = options;
    if (roiMapManager.blackRois.length === 0 &&
        roiMapManager.whiteRois.length === 0) {
        computeRois(roiMapManager);
    }
    const rois = match(kind)
        .with('black', () => roiMapManager.blackRois)
        .with('white', () => roiMapManager.whiteRois)
        .with('bw', () => [...roiMapManager.whiteRois, ...roiMapManager.blackRois])
        .exhaustive();
    return rois.filter((roi) => roi.surface >= minSurface && roi.surface <= maxSurface);
}
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