TY - GEN
T1 - Adaptive DCT coding of images using entropy-constrained trellis coded quantization
AU - Farvardin, N.
AU - Ran, X.
AU - Lee, C. C.
PY - 1993
Y1 - 1993
N2 - In this paper we develop an adaptive DCT based image coding scheme in which a combination of a perceptually-motivated image model, entropy-constrained trellis coded quantization (ECTCQ) and perceptual error weighting is employed to obtain good subjective performance at low bit rates. The model is used to decompose the image into: (i) strong edge, (ii) slow-intensity variations and (iii) texture components. The perceptually important strong edges are encoded essentially losslessly. The remaining components are encoded using an adaptive DCT in which the transform coefficients are quantized by ECTCQ. The contrast-sensitivity of the human visual system is used for perceptual weighting of the transform coefficients. Simulation results are provided and some comparisons are made.
AB - In this paper we develop an adaptive DCT based image coding scheme in which a combination of a perceptually-motivated image model, entropy-constrained trellis coded quantization (ECTCQ) and perceptual error weighting is employed to obtain good subjective performance at low bit rates. The model is used to decompose the image into: (i) strong edge, (ii) slow-intensity variations and (iii) texture components. The perceptually important strong edges are encoded essentially losslessly. The remaining components are encoded using an adaptive DCT in which the transform coefficients are quantized by ECTCQ. The contrast-sensitivity of the human visual system is used for perceptual weighting of the transform coefficients. Simulation results are provided and some comparisons are made.
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M3 - Conference contribution
AN - SCOPUS:0027277733
SN - 0780309464
T3 - Proceedings - ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing
SP - V-397-V-400
BT - Image and Multidimensional Signal Processing
T2 - IEEE International Conference on Acoustics, Speech and Signal Processing, Part 5 (of 5)
Y2 - 27 April 1993 through 30 April 1993
ER -