Image processing

This page introduces some image processing methods.

• Tutorial: Brightness and contrast adjustment
  This tutorial will show you some simple techniques to adjust or improve the brightness / contrast of an image.
• Tutorial: Automatic gamma correction
  This tutorial will show you different methods for automatic gamma correction.
• Tutorial: Contrast and image sharpening techniques
  This tutorial will show you some simple techniques to improve the contrast and the sharpness of an image.
• Tutorial: Automatic thresholding
  This tutorial will show you different methods to automatically threshold, binarize an image.
• Tutorial: Contours extraction from a binary image
  This tutorial will show you how to extract the contours from a binary image.
• Tutorial: Connected-components labeling
  This tutorial will show you how to do a connected-components labeling.
• Tutorial: Flood fill algorithm
  This tutorial will show you how to use the flood fill algorithm.
• Practical example: count the number of coins in an image
  This tutorial will show you how to count the number of coins in an image.
• Tutorial: Gradient-based Circle Hough Transform
  This tutorial will show you how to use the gradient-based Circle Hough Transform to detect circles in an image.