why after I use the imwrite function, the pixels in the image are changed diferrent? before I convert from double matrix to uint8 matrix ?
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embed1=uint8(blkproc(embed1,[8 8],@idct2));
imwrite(embed1,'embeddct.jpg');
AA=imread('embeddct.jpg');
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Looky
el 8 de Nov. de 2017
Editada: Looky
el 8 de Nov. de 2017
This is likely a result from the compression/decompression process involved when saving to a jpg file. Choose a better suited file format like '.bmp' if you want the exact equality of saved and loaded data.
imwrite(embed1,'embeddct.bmp');
AA=imread('embeddct.bmp');
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