RECOMMENDATION ITU-R BT.813* Methods for objective picture quality assessment in relation to impairments from digital coding of television signals

The ITU Radiocommunication Assembly, considering a) that with the increasing application of digital coding and bit-rate reduced transmission, the assessment of coding impairments is of critical importance; b) that objective measurements are necessary for specific evaluations as routine supervisions or system optimizations; c) that several types of objective measurements may be defined for different digital systems and applications; d) that the adoption of standardized methods is of importance in the exchange of information between various laboratories, recommends 1 that the general methods described in Annex 1 for obtaining objective measurements of digital picture quality should be used; 2 that the choice of the appropriate objective measurements for a system or an application should be made on the basis of the information given in Annex 1.