Aug 15, 2005 #1 H heab Newbie level 5 Joined May 9, 2005 Messages 8 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,368 blkproc dct2 How can I use MATLAB for do the DCT(sub-block 8x8) with the image (512x512)?
Aug 16, 2005 #2 L luancao Member level 4 Joined Aug 2, 2005 Messages 68 Helped 7 Reputation 14 Reaction score 1 Trophy points 1,288 Activity points 2,248 Re: DCT (jpeg) Yes, in the signal processing tool box there is a function of DCT ...
Aug 18, 2005 #3 S swahlah Full Member level 2 Joined Mar 24, 2005 Messages 141 Helped 23 Reputation 46 Reaction score 7 Trophy points 1,298 Activity points 3,010 Re: DCT (jpeg) Read the Discrete Cosine Transform topic in the image processing toolbox help [8-16]and there is an example of 8x8 dct. The dct2 function in the Image Processing Toolbox computes the two-dimensional discrete cosine transform (DCT) of an image. -Best Regards
Re: DCT (jpeg) Read the Discrete Cosine Transform topic in the image processing toolbox help [8-16]and there is an example of 8x8 dct. The dct2 function in the Image Processing Toolbox computes the two-dimensional discrete cosine transform (DCT) of an image. -Best Regards
Aug 18, 2005 #4 E emad1347 Newbie level 4 Joined Aug 13, 2005 Messages 5 Helped 2 Reputation 4 Reaction score 1 Trophy points 1,283 Activity points 1,326 Re: DCT (jpeg) Hi Yes of course, a good matlab command in this area is blkproc and see matlab example in this area: I = imread('cameraman.tif'); fun = @dct2; J = blkproc(I,[8 8],fun); imagesc(J), colormap(hot)
Re: DCT (jpeg) Hi Yes of course, a good matlab command in this area is blkproc and see matlab example in this area: I = imread('cameraman.tif'); fun = @dct2; J = blkproc(I,[8 8],fun); imagesc(J), colormap(hot)