Performance Evaluation: From NTSC to Digitally Compressed Video

This paper discusses the general approach of objective and subjective evaluations on digitally compressed video. After brief review of digital compression principles, artifacts associated with video compression are identified along with their origins. To investigate the usefulness of the conventional NTSC test signals and measurement procedures, both analysis and experiments were carried out. Observations are made based on the experiments. Also, some new objective test signals and measurement methods are presented and the application of these methods for assessment of compressed video is discussed. For subjective assessment, the design of testing is reviewed first. Issues which may affect success of subjective evaluation are discussed in detail. The importance of choosing critical test sequences is stressed and some guidelines on what kind of test material may be chosen are given. Finally, some new proposed methods and suggestions for performance evaluation are reviewed.

Published

1994-02

Content type

Original Research

DOI

10.5594/M00852

ISBN

978-1-61482-921-8