Using Chroma Subsampling in Lossy Compression

Kód výsledku v IS VaVaI

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Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Using Chroma Subsampling in Lossy Compression

Popis výsledku v původním jazyce

Nowadays, compression of raster image is frequently used. The reasons for this are the quite high compression ratios and also, the usually high compression/decompression speed (the success of these two major parameters of the compression algorithms depends on the image information content). In addition, the images can often allow one to use lossy compression algorithms which cause a substantially greater reduction of the image data size. The JPEG graphic format is the most widely used. Here, the loss rate is determined in two ways by the subsampling color components and the quantization of the coefficients that are obtained by the Discrete Cosine Transform calculation. In this paper, attention is focused on the subsampling of the color components. A comparison of the effects of the most frequently used sampling techniques to the quality and size of the processed image is then performed.

Název v anglickém jazyce

Using Chroma Subsampling in Lossy Compression

Popis výsledku anglicky

Nowadays, compression of raster image is frequently used. The reasons for this are the quite high compression ratios and also, the usually high compression/decompression speed (the success of these two major parameters of the compression algorithms depends on the image information content). In addition, the images can often allow one to use lossy compression algorithms which cause a substantially greater reduction of the image data size. The JPEG graphic format is the most widely used. Here, the loss rate is determined in two ways by the subsampling color components and the quantization of the coefficients that are obtained by the Discrete Cosine Transform calculation. In this paper, attention is focused on the subsampling of the color components. A comparison of the effects of the most frequently used sampling techniques to the quality and size of the processed image is then performed.

Druh

D - Stať ve sborníku

CEP obor

IN - Informatika

OECD FORD obor

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Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2015

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název statě ve sborníku

The International Conference on Applied Mathematics, Computional Science &amp; Engineering

ISBN

978-1-61804-350-4

ISSN

2227-4588

e-ISSN

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Počet stran výsledku

4

Strana od-do

134-137

Název nakladatele

NAUN North Atlantic University Union

Místo vydání

Agios Niklaos

Místo konání akce

Agios Niklaos

Datum konání akce

17. 10. 2015

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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