Detlef Ruschin Deleted File  over 7 years ago

Commit id: 0b676ba764eb112aa2bb879c651cb2275f1b7e17

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It is often necessary to characterize the technical  quality of an image in terms of the subjective impression it causes in a human  observer. Subjective image quality evaluation helps for example to rank codecs  with similar performance, or to decide whether it is worthwhile to increase the  amount of data spent for a given image file or bit stream.