| タイトル | New techniques for reversible compression of multispectral data |
| 著者（英） | Sayood, K.; Magliveras, S.; Memon, N. D. |
| 著者所属（英） | NASA Lewis Research Center |
| 発行日 | 1993-01-01
1993 |
| 言語 | eng |
| 内容記述 | While spatial correlations are adequately exploited by standard lossless image compression techniques, little success has been attained in exploiting spectral correlations when dealing with multispectral image data. In this paper, we present some new lossless image compression techniques that capture spectral correlations as well as spatial correlation in a simple and elegant manner. The schemes are based on the notion of a prediction tree, which defines a non-causal prediction model for an image. We present a backward adaptive technique and a forward adaptive technique. We then give a computationally efficient way of approximating the backward adaptive technique. The approximation gives good results and is extremely easy to compute. Simulation results show that for high spectral resolution images, significant savings can be made by using spectral correlations in addition to spatial correlations. Furthermore, the increase in complexity incurred in order to make these gains is minimal. |
| NASA分類 | CYBERNETICS |
| レポートNO | 94A11419
AIAA PAPER 93-4486 |
| 権利 | Copyright |
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