Title: Fast and Lightweight Rate Control for Onboard Predictive Coding of Hyperspectral Images,
Abstract: Predictive coding is attractive for compression of hyperspecral images
onboard of spacecrafts in light of the excellent rate-distortion performance
and low complexity of recent schemes. In this letter we propose a rate control
algorithm and integrate it in a lossy extension to the CCSDS-123 lossless
compression recommendation. The proposed rate algorithm overhauls our previous
scheme by being orders of magnitude faster and simpler to implement, while
still providing the same accuracy in terms of output rate and comparable or
better image quality.