Adaptive One Dimensional DCT-VQ For Motion Compensated Video Coding

Ali N. Akansu; Jung Hui Chien

doi:10.1117/12.970059

1 November 1989 Adaptive One Dimensional DCT-VQ For Motion Compensated Video Coding

Ali N. Akansu, Jung Hui Chien

Proceedings Volume 1199, Visual Communications and Image Processing IV; (1989) https://doi.org/10.1117/12.970059
Event: 1989 Symposium on Visual Communications, Image Processing, and Intelligent Robotics Systems, 1989, Philadelphia, PA, United States

Abstract

The motion compensated frame difference (MCFD) signals of video have much less correlation than the still frames. This change of source statistics brings the compactness power of the 2D DCT down. The Hadamard matrix decomposition 1D DCT of MCFD is proposed in this paper. The 1D DCT case is compared with the 8x8 2D DCT case. The results indicate that both perform the same practically. But the first is simpler computationally than the latter. Transform coefficients split into bands and each band is grouped based on the variances. The VQ of transform coefficient bands is employed. 35.77 dB of PSNR at 0.3245 bits/pixel is obtained with the proposed scheme which is also perceptually as good as the 2D DCT case.

Citation Download Citation

Ali N. Akansu and Jung Hui Chien "Adaptive One Dimensional DCT-VQ For Motion Compensated Video Coding", Proc. SPIE 1199, Visual Communications and Image Processing IV, (1 November 1989); https://doi.org/10.1117/12.970059

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