A visual model for subband image coding

A visual model for subband image coding

In this paper, we propose a visual model for the general subband coding system. This model is a generalization of Watson's visual model for DCT. Based on this model, a new perceptual distortion is proposed which can be used together with an efficient bit allocation algorithm to determine the qu...

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Bibliographic Details
Published in:1998 IEEE International Symposium on Circuits and Systems (ISCAS) Vol. 4; pp. 237 - 240 vol.4
Main Authors: Fong, W.C., Chan, S.C., Ho, K.L.
Format: Conference Proceeding
Language:English
Published: IEEE 1998
Subjects:
Bit rate
Brightness
Discrete cosine transforms
Equations
Frequency domain analysis
Humans
Image coding
Masking threshold
Testing
Visual system
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Summary:In this paper, we propose a visual model for the general subband coding system. This model is a generalization of Watson's visual model for DCT. Based on this model, a new perceptual distortion is proposed which can be used together with an efficient bit allocation algorithm to determine the quantizer stepsizes of subband coders. Simulation results and subjective viewing tests demonstrate that the proposed approach is very effective in improving the subjective quality of the encoded image at low bit rate.
ISBN:9780780344556
0780344553
DOI:10.1109/ISCAS.1998.698803