Video 1 link - Youtube - Covers the Mat structure, reading and displaying an image, and how to do a basic Gaussian Blur on an image.
Video 2 link - Youtube - Covers Image Manipulation, resizing and rotation, changing the colors of an image, and applying Convolution kernels to an image to produce a desired effect.
Video 3 link - Youtube - Covers Edge Detection and Contours, Sobel, Canny, and then using contours to fill an image.
Video 4 link - Youtube - Covers Template Matching in Emgu and OpenCV, and then shows an example of using that to visually grade a student's multiple choice test.
Video 5 link - Youtube - Covers Video, how to capture from a webcam, and then how to manipulate frames to change the video stream shown.
Video 6 link - Youtube - Covers Object Detection with Haar Cascade Classifiers and the YOLO Object Detection algorithm.