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Date File Comment by Comment Rating
20 Jul 2009 Quadtree decomposition (Encoding) and Decoding of RGB Image Quadtree decomposition (Encoding) and Decoding of RGB Image of size M-by-N-by-3 (No toolbox required Author: Dr. Murtaza Khan Khan, Dr. Murtaza

New version has been uploaded. Fee free to use and comment on this program.

Thanks
Author

18 Jul 2009 Quadtree decomposition (Encoding) and Decoding of RGB Image Quadtree decomposition (Encoding) and Decoding of RGB Image of size M-by-N-by-3 (No toolbox required Author: Dr. Murtaza Khan Khan, Dr. Murtaza

I updated the new version on 18-July, which includes two missing files delsparsekeybyxANDy.m and trimsparse.m. Please wait few days so that Matlab can approve and upload the new version in few days.

thanks
Author

12 May 2009 Block Matching Algorithms for Motion Estimation Review of various block matching algorithms used for motion estimation in MPEG coding. Author: Aroh Barjatya Khan, Dr. Murtaza

The program my give incorrect results. For example in TSS method motionEstTSS.m. The following function call will give wrong results:
 costs(2,2) = costFuncMAD(imgP(i:i+mbSize-1,j:j+mbSize-1), ...
                    imgI(i:i+mbSize-1,j:j+mbSize-1),mbSize);
Because for video data pixel values are of type integer (0-255) i.e. imgP and imgI of type uint8. Therefore, first use casting to double then call this method.

e.g. a correct and more readable code would be

 currentBlk=imgP(i:i+mbSize-1,j:j+mbSize-1);
 refBlk=imgI(refBlkVer:refBlkVer+mbSize-1, refBlkHor:refBlkHor+mbSize-1);
                    thisCost=costFuncMAD(double(currentBlk),double(refBlk), mbSize);
  costs(costRow, costCol ) = thisCost;

 

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