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Perceived quality metrics for low bit rate compressed video

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2 Author(s)
Masry, M. ; Sch. of Electr. & Comput. Eng., Cornell Univ., Ithaca, NY, USA ; Hemami, S.S.

The paper presents an objective metric for the perceived quality of low bit rate compressed video. Frames are decomposed into several frequency bands at multiple scales and a motion detection algorithm is used to segment moving and nonmoving regions. The distance between the decompositions of the reference and distorted video sequences is used to estimate a frame distortion. The pooled error across several frames and the correlation between successive estimates of perceived quality are used to estimate the current perceived quality at a rate of 2 samples per second. The results of a subjective evaluation of perceived quality are used to determine the model parameters. The variety of content and coding conditions used in the subjective evaluation permits a wide range of training conditions. The results indicate that the metric can capture many of the features of the measured perceived quality over time.

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Image Processing. 2002. Proceedings. 2002 International Conference on  (Volume:3 )

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