OpenCV maintains two active development branches: the previous stable 4.x branch and 5.x branch (now also stable) where most of the latest functionality will be put to. Many improvements — performance ...

Real-time playing card identification using OpenCV. Detects rank and suit from a live camera feed via contour detection, perspective transform, and template matching against a 52-card reference set ...

In recent years, image analysis technology has been evolving rapidly. Visual inspection in manufacturing. Autonomous driving. Medical image diagnosis. Security cameras. Smartphone facial recognition.