Using JPEG2000 on-board mini-satellites for image-driven compression

This paper describes a method that optimises the downlink effectiveness dynamically by using a general model for a variable compression rate optimisation, depending on the application specific requirements. The concept utilises the JPEG2000 standard, however, a generalised region-of-interest (ROI) map is used together with a different post-compression rate distortion optimisation. The generalised ROI map com- prises a multi-level priority scheme as well as continuously adjustable qualities for each individual region to reflect the application specific requirements for a particular image. The implementation is transparent, since it is only concerning the encoder and any standard JPEG2000 decoder can be used for decompression.