Here is several code for image processing.

1. image read and show
2. image resize
3. image information
4. image change type
5. image adjust
6. intensity transformation
7. histogram of image
8. historam equalization
9. Thresholding
10. ideal thresholding
11. contrast stretching
12. intensity level slicing
13. image filters masks
14. implementing masks on images
15. edge of images
16. local laplacian filtrering
17. morphologic operations
18. dialation
19. erosion
20. make a binary image