A new interferential multispectral image compression algorithm based on adaptive classification and curve-fitting

Ke-Yan Wang; Yun-Song Li; Kai Liu; Cheng-Ke Wu

doi:10.1117/12.794332

5 September 2008 A new interferential multispectral image compression algorithm based on adaptive classification and curve-fitting

Ke-Yan Wang, Yun-Song Li, Kai Liu, Cheng-Ke Wu

Author Affiliations +

Proceedings Volume 7084, Satellite Data Compression, Communication, and Processing IV; 70840E (2008) https://doi.org/10.1117/12.794332
Event: Optical Engineering + Applications, 2008, San Diego, California, United States

Abstract

A novel compression algorithm for interferential multispectral images based on adaptive classification and curve-fitting is proposed. The image is first partitioned adaptively into major-interference region and minor-interference region. Different approximating functions are then constructed for two kinds of regions respectively. For the major interference region, some typical interferential curves are selected to predict other curves. These typical curves are then processed by curve-fitting method. For the minor interference region, the data of each interferential curve are independently approximated. Finally the approximating errors of two regions are entropy coded. The experimental results show that, compared with JPEG2000, the proposed algorithm not only decreases the average output bit-rate by about 0.2 bit/pixel for lossless compression, but also improves the reconstructed images and reduces the spectral distortion greatly, especially at high bit-rate for lossy compression.

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Ke-Yan Wang, Yun-Song Li, Kai Liu, and Cheng-Ke Wu "A new interferential multispectral image compression algorithm based on adaptive classification and curve-fitting", Proc. SPIE 7084, Satellite Data Compression, Communication, and Processing IV, 70840E (5 September 2008); https://doi.org/10.1117/12.794332

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KEYWORDS

Image compression

Multispectral imaging

JPEG2000

Gallium

Spectrometers

Image classification

Discrete wavelet transforms

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