Tutorials for contrib modules

• alphamat. Information Flow Alpha Matting
• bgsegm. Tutorials for bgsegm module
• bioinspired. Discovering the human retina and its use for image processing
• cannops. Ascend NPU Image Processing
• ccalib. Multi-camera Calibration
• ccalib. Omnidirectional Camera Calibration
• cvv. Interactive Visual Debugging of Computer Vision applications
• dnn_objdetect. Object Detection using CNNs
• dnn_superres. Super Resolution using CNNs
• face. Tutorials for face module
• face. Tutorial on Facial Landmark Detector API
• fuzzy. Fuzzy image processing tutorials
• hdf. The Hierarchical Data Format (hdf) I/O
• julia. Introduction to Julia OpenCV Binding
• line_descriptor. Line Features Tutorial
• mcc. Color Correction Model
• mcc. ColorChecker Detection
• phase_unwrapping. Phase Unwrapping tutorial
• sfm. Structure From Motion
• stereo. Quasi Dense Stereo (stereo module)
• structured_light. Structured Light tutorials
• text. Text module
• tracking. Customizing the CN Tracker
• tracking. Introduction to OpenCV Tracker
• tracking. Using MultiTracker
• viz. OpenCV Viz
• ximgproc. Disparity map post-filtering
• ximgproc. Structured forests for fast edge detection
• ximgproc. Structured forest training
• xphoto. Image Inpainting
• xphoto. Oil painting effect
• xphoto. Training the learning-based white balance algorithm