According to the graph on p.42, the 20 MHz CPU compresses at a rate of about 20us/pixel. So the 1024x1024 images take about 20 seconds each to compress. There

According to the graph on p.42, the 20 MHz CPU compresses at a rate of about 20us/pixel. So the 1024x1024 images take about 20 seconds each to compress. There are 2,000 "normal" sized images on the website [0]. If each of these was 1024x1024, they took 11 hours to compress. So Perseverance spends about 7% of its CPU time on image compression. [0] https://mars.nasa.gov/mars2020/multimedia/raw-images/ https://mars.nasa.gov/mars2020/multimedia/raw-images/