Show to use unsharp masking algorithm. No image processing toolbox is needed.-Show how to use unsharp masking algorithm. No image processing toolbox is needed.

Matlab source code for DCT-based watermarking for grayscale images. DCT-based watermark recovering without resorting to the uncorrupted original image. Digital watermarking has been proposed as a viable solution to the need of copyright protection an

here is the code for histogram equilization and convolution for image processing from gonzalvez book also the code for image rotation and image masking-here is the code for histogram equilization and convolution for image processing from gonzalvez bo