An Example To Resize Image Files Using OpenCV And Node.js

resize_images.js

const path = require('path');
const fs = require('fs');

const cv = require('opencv4nodejs');

function resizeImagesToMax(srcDirPath, destDirPath, maxWidthHeight) {
    const srcFileList = fs.readdirSync(srcDirPath);
    for (const srcFileName of srcFileList) {
        if (!srcFileName.endsWith('.JPG')) {
            continue;
        }
        console.log('Processing ', srcFileName, '...');
        const imgMat = cv.imread(path.join(srcDirPath, srcFileName));
        const imgMatConverted = imgMat.resizeToMax(maxWidthHeight);
        cv.imwrite(path.join(destDirPath, srcFileName), imgMatConverted);
    }
}

function main() {
    const srcDirPath = 'SOURCE_DIRECTORY_PATH';
    const destDirPath = 'DEST_DIRECTORY_PATH';
    resizeImagesToMax(srcDirPath, destDirPath, 100);
}

main();