- GUI-features
- Image i/o
- Video i/o
- Drawing functions
- Using mouse as paintbrush
- Using track-bars
- Core-operations
- Basic operations
- Arithmetic operations
- Performance-measurement and -improvement
- Image-processing
- Switching colorspaces
- Geometrical operations
- Image thresholding
- Smoothing images
- Morphological transformations
- Image gradients
- Canny edge-detection
- Image Pyramids
- Contours
- Histograms
- Image-Transformations
- Template-matching
- Hough-line-transform
- Hough-circle-transform
- Image-segmentation with watershed
- Interactive foreground extraction using GrabCut