Spatio-temporal algorithm for coding artifacts reduction in highly compressed video

• Autorzy: Fedak V. , Nakonechny A.

Warianty tytułu

PL

Przestrzenno-czasowy algorytm redukcji artefaktów w wysoce skompresowanym filmie

• Języki publikacji: EN

Abstrakty

EN

Images and video are often coded using block-based discrete cosine transform (DCT) or discrete wavelet transform (DWT) which cause a great deal of visual distortions. Restoration of image sequences can obtain better results compared to restoring each image individually, provided that the temporal redundancy is adequately used. In this article, efficient approach for artifacts reduction has been presented. In order to enhance the overall video quality, the proposed approach uses image sequence redundancy. Spatial and temporal information is used for the video de-noising process.

PL

Zdjęcia i filmy są często kodowane za pomocą blokowej dyskretnej transformaty kosinusowej (DCT) lub dyskretnej transformaty falkowej (DWT), które powodują duże zakłócenia wizualne. Przywrócenie sekwencji obrazów pozwala uzyskać lepsze wyniki niż przywracanie każdego obrazu osobno, pod warunkiem odpowiedniego użycia redundancji czasowej. W niniejszym artykule zaprezentowano efektywne podejście do redukcji artefaktów. W celu zwiększenia ogólnej jakości obrazu omawiane podejście wykorzystuje redundancję sekwencji obrazu. Do procesu odszumiania filmu wykorzystano informacje czasowe i przestrzenne.

Słowa kluczowe

EN

artifacts; spatio-temporal postprocessing; wavelet transformation

PL

artefakt; obróbka przestrzenno-czasowa transformacja falkowa

• Wydawca: Wydawnictwo Politechniki Krakowskiej im. Tadeusza Kościuszki
• Czasopismo: Czasopismo Techniczne. Automatyka
• Rocznik: 2013
• Tom: R. 110, z. 2-AC
• Strony: 41--55
• Opis fizyczny: Bibliogr. 29 poz., il., wz., tab.

Twórcy

autor

Fedak V.

• Department of Computerized Automatic Systems, Lviv Polytechnic National University

autor

Nakonechny A.

• Department of Computerized Automatic Systems, Lviv Polytechnic National University

Bibliografia

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