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TUTCRIS

HVS-based local analysis of denoising efficiency for DCT-based filters

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Yksityiskohdat

AlkuperäiskieliEnglanti
Otsikko2015 2nd International Scientific-Practical Conference Problems of Infocommunications Science and Technology, PIC S and T 2015 - Conference Proceedings
KustantajaIEEE
Sivut189-192
Sivumäärä4
ISBN (painettu)9789669751928
DOI - pysyväislinkit
TilaJulkaistu - 14 joulukuuta 2015
OKM-julkaisutyyppiA4 Artikkeli konferenssijulkaisussa
TapahtumaInternational Scientific-Practical Conference Problems of Infocommunications Science and Technology -
Kesto: 1 tammikuuta 2000 → …

Conference

ConferenceInternational Scientific-Practical Conference Problems of Infocommunications Science and Technology
Ajanjakso1/01/00 → …

Tiivistelmä

Images acquired and processed in communication and multimedia systems are often noisy. Thus, pre-filtering is a typical stage to remove noise. At this stage, a special attention has to be paid to image visual quality. This paper analyzes denoising efficiency from the viewpoint of visual quality improvement using metrics that take into account human vision system (HVS). Specific features of the paper consist in, first, considering filters based on discrete cosine transform (DCT) and, second, analyzing the filter performance locally. Such an analysis is possible due to the structure and peculiarities of the metric PSNR-HVS-M. It is shown that a more advanced DCT-based filter BM3D outperforms a simpler (and faster) conventional DCT-based filter in locally active regions, i.e., neighborhoods of edges and small-sized objects. This conclusions allows accelerating BM3D filter and can be used in further improvement of the analyzed denoising techniques.

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