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8 July 1998 Interaction of onboard transform-based lossy compression algorithms with EO/IR focal plane nonuniformity correction techniques
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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.
© (1998) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
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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