A hardware-friendly architecture for onboard rate-controlled predictive coding of hyperspectral and multispectral images

In this paper we propose an efficient architecture for onboard implementation of rate-controlled predictive lossy compression of hyperspectral and multispectral images. In particular, we consider the recent state-of-the-art rate control algorithm for onboard predictive compression [1], and propose an architecture addressing two fundamental aspects of its hardware implementation. Specifically, this architecture overcomes the serial nature of the algorithm, as well as the large memory requirements of the entropy coding stage, achieving a pipelined implementation suitable for high-throughput onboard implementation, at a negligible cost in terms of coding efficiency.