Guidelines on selecting JPEG 2000 coding quality

New guidelines at jpeg.org on selecting JPEG 2000 coding quality using a single parameter (Qfactor) — just like good old .jpg.

https://ds.jpeg.org/documents/jpeg2000/wg1n100430-098-COM-Guideline_on_controlling_JPEG_2000_image_quality_using_a_single_parameter.pdf

Implemented in Kakadu and OpenHTJ2K

#jpeg2000 #htj2k