Title :
Quality assessments for visual service
Author :
Miyahara, Makoto
Author_Institution :
Fac. of Eng., Tech. Univ. of Nagaoka, Niigata, Japan
Abstract :
Three kinds of visual services, namely highly band-compressed, conventional, and high definition, are considered. Evaluation in terms of factors basic to all three classes are considered. The picture quality scale (PQS) is discussed, and its use in assessing color image coding and coder design is examined. Deterioration of moving images due to blur and to field or frame repetition is addressed. The problems relevant to high-definition visual services are described.<>
Keywords :
bandwidth compression; encoding; high definition television; picture processing; telecommunication services; television reception; HDTV; bandwidth compression; blur; coder design; color image coding; field repetition; frame repetition; high-definition visual services; highly band-compressed service; moving images deterioration; picture quality scale; quality assessment; Autocorrelation; Computer simulation; Covariance matrix; Eigenvalues and eigenfunctions; Equations; Image coding; Monitoring; Nonlinear distortion; Testing;
Journal_Title :
Communications Magazine, IEEE
