Wavelet transforms in a JPEG-like image coder

Ricardo L. de Queiroz; C. K. Choi; Young Huh; J. J. Hwang; K. R. Rao

doi:10.1117/12.185922

16 September 1994 Wavelet transforms in a JPEG-like image coder

Ricardo L. de Queiroz, C. K. Choi, Young Huh, J. J. Hwang, K. R. Rao

Proceedings Volume 2308, Visual Communications and Image Processing '94; (1994) https://doi.org/10.1117/12.185922
Event: Visual Communications and Image Processing '94, 1994, Chicago, IL, United States

Abstract

The discrete wavelet transform is incorporated into the JPEG baseline coder for image coding. The discrete cosine transform is replaced by an association of two-channel filter banks connected hierarchically. The scanning and quantization schemes are devised and the entropy coder used is exactly the same as used in JPEG. The result is a still image coder that outperforms JPEG while retaining its simplicity and most of its existing building blocks. Objective results and reconstructed images are presented.

Citation Download Citation

Ricardo L. de Queiroz, C. K. Choi, Young Huh, J. J. Hwang, and K. R. Rao "Wavelet transforms in a JPEG-like image coder", Proc. SPIE 2308, Visual Communications and Image Processing '94, (16 September 1994); https://doi.org/10.1117/12.185922

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