Fuzzy approach to controlling the bit rate for pre-encoded video in the discrete cosine transform domain

Tae Yong Kim; Jong Soo Choi

doi:10.1117/1.2010227

1 August 2005 Fuzzy approach to controlling the bit rate for pre-encoded video in the discrete cosine transform domain

Tae Yong Kim, Jong Soo Choi

Author Affiliations +

Optical Engineering, Vol. 44, Issue 8, 087009 (August 2005). https://doi.org/10.1117/1.2010227

Abstract

We propose a fuzzy method to control the bit rate in the discrete cosine transform (DCT) domain. The method consists of a bit-rate allocation with fuzzy measures and a least-distortion bit-rate reduction. Fuzzy measures are calculated from the code length, the discontinuity ambiguity, and the neighborhood momentum in each DCT block. These measures are summed with weights and form a reduction fuzziness to indicate the degree of preferable reduction. Using the reduction fuzziness, each DCT block is filtered by the least-distortion reduction method to adjust the bit rate for the target bandwidth. In an experiment, we show that the video quality transcoded by the method is better and the bandwidth is more regular than with existing methods, both visually and quantitatively.

©(2005) Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation Download Citation

Tae Yong Kim and Jong Soo Choi "Fuzzy approach to controlling the bit rate for pre-encoded video in the discrete cosine transform domain," Optical Engineering 44(8), 087009 (1 August 2005). https://doi.org/10.1117/1.2010227

Published: 1 August 2005

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