Optimized satellite image compression and reconstruction via evolution strategies

Brendan Babb; Frank Moore; Michael Peterson

doi:10.1117/12.817700

29 April 2009 Optimized satellite image compression and reconstruction via evolution strategies

Brendan Babb, Frank Moore, Michael Peterson

Proceedings Volume 7347, Evolutionary and Bio-Inspired Computation: Theory and Applications III; 73470O (2009) https://doi.org/10.1117/12.817700
Event: SPIE Defense, Security, and Sensing, 2009, Orlando, Florida, United States

Abstract

This paper describes the automatic discovery, via an Evolution Strategy with Covariance Matrix Adaptation (CMA-ES), of vectors of real-valued coefficients representing matched forward and inverse transforms that outperform the 9/7 Cohen-Daubechies-Feauveau (CDF) discrete wavelet transform (DWT) for satellite image compression and reconstruction under conditions subject to quantization error. The best transform evolved during this study reduces the mean squared error (MSE) present in reconstructed satellite images by an average of 33.78% (1.79 dB), while maintaining the average information entropy (IE) of compressed images at 99.57% in comparison to the wavelet. In addition, this evolved transform achieves 49.88% (3.00 dB) average MSE reduction when tested on 80 images from the FBI fingerprint test set, and 42.35% (2.39 dB) average MSE reduction when tested on a set of 18 digital photographs, while achieving average IE of 104.36% and 100.08%, respectively. These results indicate that our evolved transform greatly improves the quality of reconstructed images without substantial loss of compression capability over a broad range of image classes.

Citation Download Citation

Brendan Babb, Frank Moore, and Michael Peterson "Optimized satellite image compression and reconstruction via evolution strategies", Proc. SPIE 7347, Evolutionary and Bio-Inspired Computation: Theory and Applications III, 73470O (29 April 2009); https://doi.org/10.1117/12.817700

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