Compresses the image using JPEG 2000 compression.
JPEG 2000 compression can be used on RGB, Grayscale or CMYK
images. It offers high compression levels for continuous tone
images like photographs. However it is a lossy method which means
that the quality of the compressed image will not be as good as the
The quality of the compression can range from zero (lowest
quality, highest compression) to 100 (lossless quality, lowest
compression). A good generic value is 75.