% Watermarking Toolbox.
% Version 1.0 14-May-1999
%
%/------------------------------------------\
%| ELE 585                                  |
%| Final Project                            | 
%|                                          |
%| Watermarking an Image using blue channel |
%| amplitude modulation                     |
%\------------------------------------------/
%
% University of Rhode Island
% Dept. of Electrical Engineering
% Roger Meier, May '99
%
%
%
% Watermarking
% ------------
%   watermark   - watermark embedding
%   retrieve    - watermark retrieval
%
% Image Attacking
% ---------------
% Geometrical Attacks:
%   rot         - image rotation
%   crop        - image cropping
%   resize      - image resizing
%
% Filters:
%   blur        - image blurring
%   sharpen     - image sharpening
%   minfilt     - minimum filter
%   medfilt     - median filter
%   maxfilt     - maximum filter
%
% Noise Attacks:
%   gauss       - gaussian noise
%   uniform     - uniform noise
%   snp         - salt & pepper noise
%
% Contrast Enhancement:
%   histogram   - histogram equalization
%
% Compression:
%   jpeg        - JPEG compression
%
% Recovering from geometrical attacks
% -----------------------------------
%   searchrot  - find rotation angle of rotated watermarked image
%   searchcrop - find original position of a cropped out segment
%
% Misc.
% -----
%   loadimrgb    - load any image as RGB
%   plotdelta    - plots the averaged deltas returned by RETRIEVE
%   plotembedpos - plots embedding positions and blue channel difference
