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Title: Variable temporal-length 3-D discrete cosine transform coding
Authors: Chan, YL 
Siu, WC 
Keywords: Discrete cosine transforms
Image sequences
Motion estimation
Transform coding
Variable length codes
Video coding
Issue Date: May-1997
Publisher: Institute of Electrical and Electronics Engineers
Source: IEEE transactions on image processing, May 1997, v. 6, no. 5, p. 758-763 How to cite?
Journal: IEEE transactions on image processing 
Abstract: Three-dimensional discrete cosine transform (3-D DCT) coding has the advantage of reducing the interframe redundancy among a number of consecutive frames, while the motion compensation technique can only reduce the redundancy of at most two frames. However, the performance of the 3-D DCT coding will be degraded for complex scenes with a greater amount of motion. This paper presents a 3-D DCT coding with a variable temporal length that is determined by the scene change detector. Our idea is to let the motion activity in each block be very low, while the efficiency of the 3-D DCT coding could be increased. Experimental results show that this technique is indeed very efficient. The present approach has substantial improvement over the conventional fixed-length 3-D DCT coding and is also better than that of the Moving Picture Expert Group (MPEG) coding.
ISSN: 1057-7149
EISSN: 1941-0042
DOI: 10.1109/83.568933
Rights: © 1997 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.
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