Question 1

What is Canny edge detection?

Accepted Answer

The Canny algorithm is a multi-stage edge detection method that finds intensity gradients, applies non-maximum suppression, and uses hysteresis thresholding to detect strong and weak edges in images.

Question 2

Is my image processed locally?

Accepted Answer

Yes, all processing runs in your browser via OpenCV.js. No images are uploaded or stored on any server.

Edge & Contour Detector