09-02-2019 05:19 AM
I try to compress a tiff image into ecw v3 containing uint16 bit band. Although I set the target ratio is 1, the actual ratio is too high ( 313 for my case ). When I zoom in, the quality is unacceptable. How can I limit the actual ratio or How can I preserve image quality?
09-16-2019 12:11 AM - edited 09-16-2019 12:11 AM
With ECW, there is no possibility to have a numerically lossless compression. The only way is to produce a JP2 instead.
But, I am quite surprised by your actual compression ratio. What kind of data is it?