Tag: opencv

Learn how to create a custom document scanning dataset using Python and OpenCV — capture real photos, save quadrilateral annotations, and synthesize training images for edge detection and deep learning.

Learn how to automatically assess scanned document image quality — detect blur, skew, overexposure, and aspect ratio issues using OpenCV.js, Tesseract.js, and Dynamic Web TWAIN in a JavaScript web app.

Learn how to detect document boundaries and correct perspective distortion in the browser using OpenCV.js. Includes live camera scanning, auto-capture, and polygon editing with Dynamsoft Document Viewer.

Step-by-step JavaScript tutorial for building a web barcode scanner with OpenCV.js — covers QR code detection, EAN-13 decoding, and live camera scanning.

Learn how to auto-deskew scanned document images using OpenCV and Python. This step-by-step tutorial covers skew angle detection via contour analysis, affine rotation, and a browser-based alternative with Dynamic Web TWAIN.

Open-source vs commercial QR code reader benchmark comparing Dynamsoft, ZXing, ZBar, BoofCV, and OpenCV WeChat across 536 images in 16 categories. Includes Python QR code reader performance data, reading rates, and decode speed.

Learn how to detect and decode EAN-13 barcodes in images using Python and OpenCV with thresholding, contour detection, and checksum verification.