A lossless compression algorithm for aurora spectral data using online regression prediction
Wanqiu Kong, Jiaji Wu · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2015
Lossless compression algorithms are available for preservation of aurora images. Handling with aurora image compression, linear prediction based method has outstanding compression performance. However, this performance is limited by prediction order and time complexity of linear prediction is relatively high. This paper describes how to solve the conflict between high prediction order and low compression bit rate with an online linear regression with RLS (OLRRLS) algorithm. Experiment results show that OLR-RLS achieves average 7%~11.8% improvement in compression gain and 2.8x speed up in computation time over linear prediction.