Title :
Discrete Walsh-Hadamard transform vector quantization for motion-compensated frame difference signal coding
Author_Institution :
Dept. of Electr. Eng., New Jersey Inst. of Technol., Newark, NJ
Abstract :
Theoretical performance analysis and test simulations showed that the DWHT (discrete Walsh-Hadamard transform) is as good as the DCT (discrete cosine transform) for the encoding of low-correlation MCFD (motion-compensated frame difference) signals. However, the straightforward algorithm for the DWHT makes it a better choice than the DCT. The transform vector quantization (TRVQ) technique is employed for low bit rates. It is also observed that the robustness of the VQ (vector quantization) technique for the MCFD signals is much better than that of the VQ of the still frame images
Keywords :
data compression; encoding; picture processing; transforms; DCT; discrete Walsh-Hadamard transform; discrete cosine transform; encoding; image coding; low bit rates; motion-compensated frame difference signal coding; robustness; transform vector quantization; vector quantization; Analytical models; Bit rate; Discrete cosine transforms; Discrete transforms; Encoding; Motion analysis; Performance analysis; Robustness; Testing; Vector quantization;
Conference_Titel :
Acoustics, Speech, and Signal Processing, 1989. ICASSP-89., 1989 International Conference on
Conference_Location :
Glasgow
DOI :
10.1109/ICASSP.1989.266816
