Computer Vision for Beginners: How to do a simple image segmentation with superpixels using Python and OpenCV.
Computer Vision for Beginners: How to do a simple colour quantisation in image processing using Python and OpenCV.
Computer Vision for Beginners: Basic Color Clustering using Python K-Means.
Computer Vision for Beginners: Basic Image Manipulations in Python and OpenCV: Resizing (scaling), Rotating, and Cropping.