There are two categories of data compression. The first reduces the size of a single file to save storage space and transmit faster. The second is for storage and transmission convenience.

If the count is positive, then that’s how many ... Even if you use another compression algorithm, changing your data to be mostly zeros is going to help the compressor. There are a few caveats ...

Anyone, we think, can understand the practical result where removing too much data — high compression — resulted in a poor quality image, but the image quality was pretty good even when 75% of ...