Title :
A new activity model for scene adaptive quantization
Author :
Pun, Kwok Cheung
Author_Institution :
Dept. of Electr. Eng., Ngee Ann Polytech., Singapore
Abstract :
A new activity model has been developed for scene adaptive quantization. It is fitted into a discrete cosine transform (DCT) very-large-scale integrated circuits (VLSI) chip set to remedy the occlusions produced in active pictures. The design is based on the human perception Gabor function and the maximum energy of a resonant R-L-C electrical circuit. Consequently, a theoretical region for optimum use of quantization bits has been charted and, new and simple mathematics are derived to cope with the block artifacts in moving pictures under a controlled buffer
Keywords :
VLSI; adaptive signal processing; buffer storage; circuit resonance; digital signal processing chips; discrete cosine transforms; image segmentation; image sequences; quantisation (signal); transform coding; video coding; visual perception; Gabor function; VLSI chip set; active pictures; activity model; block artifacts; controlled buffer; discrete cosine transform; human perception; image coding; image segmentation; maximum energy; moving picture sequence; occlusions; quantization bits; resonant R-L-C electrical circuit; scene adaptive quantization; very-large-scale integrated circuits; Bit rate; Decoding; Discrete cosine transforms; Discrete transforms; Image coding; Layout; Quantization; RLC circuits; Resonance; Very large scale integration;
Conference_Titel :
Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International Conference on
Print_ISBN :
0-7803-3676-3
DOI :
10.1109/ICICS.1997.647104
