Influence of the number and pattern of geometrical entities in the image upon PNG format image size

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27350%2F12%3A86082717" target="_blank" >RIV/61989100:27350/12:86082717 - isvavai.cz</a>

Výsledek na webu

<a href="http://dx.doi.org/10.1007/978-3-642-28490-8_47" target="_blank" >http://dx.doi.org/10.1007/978-3-642-28490-8_47</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1007/978-3-642-28490-8_47" target="_blank" >10.1007/978-3-642-28490-8_47</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Influence of the number and pattern of geometrical entities in the image upon PNG format image size

Popis výsledku v původním jazyce

The research is focused on the study of the impact of the number and the pattern of geometrical entities and colour models in map like drawings upon the file size of PNG format. The main outputs originate from the exploration of an extended sample set ofPNG images generated by Web Map Services of selected European servers. Original images were subsequently transformed to different colour models of PNG (RGBA, RGB, Palette, interlaced, non-interlaced). The images were analysed according to the number ofentities, style and size of lines and the number of used RGBA values. We found that the number of geometrical entities can be replaced by the ratio of foreground pixels in an image. The file size grows with higher image density according to different functions which are driven by colour models and line widths, partly also by patterns. In order to minimise files sizes it is recommended to transform images into appropriate palette models and to avoid anti-aliasing changes of transparency.

Název v anglickém jazyce

Influence of the number and pattern of geometrical entities in the image upon PNG format image size

Popis výsledku anglicky

The research is focused on the study of the impact of the number and the pattern of geometrical entities and colour models in map like drawings upon the file size of PNG format. The main outputs originate from the exploration of an extended sample set ofPNG images generated by Web Map Services of selected European servers. Original images were subsequently transformed to different colour models of PNG (RGBA, RGB, Palette, interlaced, non-interlaced). The images were analysed according to the number ofentities, style and size of lines and the number of used RGBA values. We found that the number of geometrical entities can be replaced by the ratio of foreground pixels in an image. The file size grows with higher image density according to different functions which are driven by colour models and line widths, partly also by patterns. In order to minimise files sizes it is recommended to transform images into appropriate palette models and to avoid anti-aliasing changes of transparency.

Druh

D - Stať ve sborníku

CEP obor

JC - Počítačový hardware a software

OECD FORD obor

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Projekt

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Návaznosti

V - Vyzkumna aktivita podporovana z jinych verejnych zdroju

Rok uplatnění

2012

Kód důvěrnosti údajů

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

Název statě ve sborníku

Lecture Notes in Computer Science. Volume 7269

ISBN

978-3-642-29352-8

ISSN

0302-9743

e-ISSN

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Počet stran výsledku

10

Strana od-do

448-457

Název nakladatele

Springer

Místo vydání

Heidelberg

Místo konání akce

Kao-hsiung

Datum konání akce

19. 3. 2012

Typ akce podle státní příslušnosti

WRD - Celosvětová akce

Kód UT WoS článku

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