It is important to say in advance that in the larger part of the history of JPEG the library did not conform to the ITU-T Recommendation T.81 | ISO/IEC 10918-1. There were several reasons for this non-conformity.  On the one hand, the standard contains many specifications that are more or less not relevant for the library and its practical application (about 50% — today, the ISO produces 100% junk). On … Continue reading Does the JPEG Library 9.x of IJG conform to the respective ITU/ISO Standard?