Tutorials for contrib modules

• aruco.ArUco marker detection (aruco module)
• bioinspired.Discovering the human retina and its use for image processing
• ccalib.Multi-camera Calibration
• ccalib.Omnidirectional Cameara Calibration
• cnn_3dobj.CNN for 3D Object Classification and Pose Estimation
• cvv.Interactive Visual Debugging of Computer Vision applications
• dnn_objdetect.Object Detection 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
• line_descriptor.Line Features Tutorial
• 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.Oil painting effect
• xphoto.Training the learning-based white balance algorithm