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An adaptive hierarchical image coding technique using transform vector quantization

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2 Author(s)
Jihong Zhang ; Dept. of Electron. Eng., Shenzhen Univ., Guangdong, China ; Youli Bao

We developed an adaptive hierarchical transform vector quantization (AHTVQ) coding technique which applies discrete cosine transform (DCT) coding of variable image block-size in combination with adaptive vector quantization (VQ) coding. To reduce complexity the subvectors are quantized with a cascaded VQ instead of full-search VQ (FSVQ). Simulation results presented show that compression rates and subjective quality compare favourably with methods previously described.<>

Published in:

TENCON '93. Proceedings. Computer, Communication, Control and Power Engineering.1993 IEEE Region 10 Conference on  (Volume:3 )

Date of Conference:

19-21 Oct. 1993