blackrect = imread('blackrectangle.bmp');
image(blackrect);
subimageR = blackrect(558:643,622:703,1);
image(subimageR);
subimageG = blackrect(558:643,622:703,2);
image(subimageG);
subimageB = blackrect(558:643,622:703,3);
image(subimageB);
vectorA = double(subimageB(13:80,24));
vectorB = double(subimageB(13:80,45));
vectorC = double(subimageB(13:80,46));
a=vectorA.^vectorB;
a=a.*vectorB;
a=a+vectorC;
a=a+32;
char(a)
char(a')