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Proceedings Paper

Detectability and annoyance value of MPEG-2 artifacts inserted in uncompressed video sequences
Author(s): Michael Scott Moore; John M. Foley; Sanjit K. Mitra
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Paper Abstract

Many approaches have been proposed recently for estimating the perceived fidelity of digitally compressed and reconstructed video clips. Several metrics rely on the accurate estimation of detection thresholds, basically assuming that perceived quality depends significantly on the error threshold. To test that assumption, we designed an experiment to measure the actual detection threshold of some MPEG-2 artifacts in typical video sequences. In each of the test clips, we briefly replaced a region with a test stimulus created using an MPEG-2 encoder. The location, time, and strength of the artifact were varied between test videos. At the end of each clip, each subject provided a detection response and, for the detected artifacts, location and annoyance information. From the data, we determined the detection threshold for each artifact. Using the thresholds, we computed a perceptually weighted error metric. In this paper, we describe the experiment in more detail, summarize the experimental results including the threshold calculations, and compare the weighted error measure to the output of a commercial fidelity metric. Finally, we discuss our conclusions on the validity of predicting quality from threshold measurements.

Paper Details

Date Published: 2 June 2000
PDF: 12 pages
Proc. SPIE 3959, Human Vision and Electronic Imaging V, (2 June 2000); doi: 10.1117/12.387146
Show Author Affiliations
Michael Scott Moore, Univ. of California/Santa Barbara (United States)
John M. Foley, Univ. of California/Santa Barbara (United States)
Sanjit K. Mitra, Univ. of California/Santa Barbara (United States)

Published in SPIE Proceedings Vol. 3959:
Human Vision and Electronic Imaging V
Bernice E. Rogowitz; Thrasyvoulos N. Pappas, Editor(s)

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