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Share with us the digital image watermarking using contourlet transform algorithm, your user stories, the code that you have written indicating where you are experiencing problem. We can then help you with specific problems
Share with us the digital image watermarking using contourlet transform algorithm, your user stories, the code that you have written indicating where you are experiencing problem. We can then help you with specific problems
x=imread('lena','bmp');
disp( 'Displaying the input image...');
clf;
imagesc(x, [0, 255]);
title( 'Input image' ) ;
axis image off;
colormap('gray');
input( 'Press Enter key to continue...' ) ;
disp( ' ' );
nlevels = [0,2,3,4] ;
pfilter = 'pkva' ;
nfilter = 'pkva' ;
y = pdfbdec( double(x), pfilter, nfilter, nlevels );
disp('Displaying the contourlet coefficients...') ;
imcoeff = showpdfb( y ) ;
disp;
title('Contourlet coefficients');
input('Press Enter key to continue...' ) ;
disp(' ');
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i wrote these code to decompose the image using contourlet transform , it divides the images into nlevels+1 bands
y(1) is the low pass and the rest are the directional bandpass , i went to extract those directional bands and convert them to matrix to can hide my logo inside them , anybody could help me or suggest a solution ?
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