mindee/src/v2/fileOperations/crop.js

Mindee Client Library for Node.js

import { MindeeError } from "../../errors/index.js";
import { extractImagesFromPolygon } from "../../image/imageExtractor.js";
import { logger } from "../../logger.js";
/**
 * Extracts a single specified crop from a given input source.
 * @param inputSource Local input source.
 * @param crop Crop to extract.
 * @param quality JPEG quality of extracted image.
 */
export async function extractSingleCrop(inputSource, crop, quality) {
    return (await extractMultipleCrops(inputSource, [crop], quality))[0];
}
/**
 * Extracts a list of crops from a document.
 * @param inputSource Local input source.
 * @param crops List of crops to extract.
 * @param quality JPEG quality of extracted images.
 * @return a list of extracted files, as a CropFiles object.
 */
export async function extractMultipleCrops(inputSource, crops, quality) {
    if (crops.length === 0) {
        throw new MindeeError("No crop indexes provided.");
    }
    await inputSource.init();
    logger.debug("Extracting crops: " + crops.join(", "));
    const polygonsByPage = new Map();
    for (const crop of crops) {
        const pageId = crop.location.page;
        if (!polygonsByPage.has(pageId)) {
            polygonsByPage.set(pageId, []);
        }
        polygonsByPage.get(pageId).push(crop.location.polygon);
    }
    return await extractImagesFromPolygon(inputSource, polygonsByPage, quality);
}