Interaction of onboard transform-based lossy compression algorithms with EO/IR focal plane nonuniformity correction techniques

Dale C. Linne von Berg

doi:10.1117/12.316529

8 July 1998 Interaction of onboard transform-based lossy compression algorithms with EO/IR focal plane nonuniformity correction techniques

Dale C. Linne von Berg

Author Affiliations +

Proceedings Volume 3389, Hybrid Image and Signal Processing VI; (1998) https://doi.org/10.1117/12.316529
Event: Aerospace/Defense Sensing and Controls, 1998, Orlando, FL, United States

Abstract

This paper describes the effect of using lossy transform- based compression on IR framing sensor data with and without sensor anomaly pre-processing. Significant image degradation persists when ground-based non-uniformity correction processing is implemented after the sensor imagery has been compressed and reconstructed. Various techniques for non- uniformity correction, from low to high processing complexity, are applied before and after lossy compression at varying compression ratios. Results using both DCT and wavelet transform-based compression techniques indicate that on-board real-time compression algorithms and nonuniformity correction must be jointly optimized and that direct application of lossy compression without preprocessing for sensor anomalies reduces not only the compression efficiency and image fidelity, but also the performance of subsequent ground-based nonuniformity correction.

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Dale C. Linne von Berg "Interaction of onboard transform-based lossy compression algorithms with EO/IR focal plane nonuniformity correction techniques", Proc. SPIE 3389, Hybrid Image and Signal Processing VI, (8 July 1998); https://doi.org/10.1117/12.316529

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KEYWORDS

Image compression

Nonuniformity corrections

Sensors

Image processing

Image quality

Image sensors

Wavelets

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