This paper describes a fuzzy quality-controller for video coding systems based on the H.261 recommendation. The picture quality is tuned by a classification of the blocks of each frame of the sequence based on a simplified model of the human visual system. The quantization parameter is evaluated according to this classification making more relevant parts be coded with finer details at the expense of less significant regions. The system is based on a restricted number of fuzzy rules and can be easily reconfigured if a different classification criterion must be adopted. The subjective quality of coded sequences is better than the one obtained by the reference model at the cost of higher computational tasks.

Fuzzy-Controlled Perceptual Coding of Videophone Sequences / Bellini, Alberto; Leone, A.; Guerrieri, R.. - In: IEEE TRANSACTIONS ON FUZZY SYSTEMS. - ISSN 1063-6706. - ELETTRONICO. - 5:(1997), pp. 294-303.

Fuzzy-Controlled Perceptual Coding of Videophone Sequences

BELLINI, Alberto;
1997

Abstract

This paper describes a fuzzy quality-controller for video coding systems based on the H.261 recommendation. The picture quality is tuned by a classification of the blocks of each frame of the sequence based on a simplified model of the human visual system. The quantization parameter is evaluated according to this classification making more relevant parts be coded with finer details at the expense of less significant regions. The system is based on a restricted number of fuzzy rules and can be easily reconfigured if a different classification criterion must be adopted. The subjective quality of coded sequences is better than the one obtained by the reference model at the cost of higher computational tasks.
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Fuzzy-Controlled Perceptual Coding of Videophone Sequences / Bellini, Alberto; Leone, A.; Guerrieri, R.. - In: IEEE TRANSACTIONS ON FUZZY SYSTEMS. - ISSN 1063-6706. - ELETTRONICO. - 5:(1997), pp. 294-303.
Bellini, Alberto; Leone, A.; Guerrieri, R.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11380/448240
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