Further Graphics Reference

A selection of further readings

• JPEG
• PNG
• GIF
• SVG
• Comparison PNG - GIF
• Miscellaneous

JPEG

JPEG Homepage

[EN] http://www.jpeg.org/index.html

Die JPEG-Kompression

[DE] Sebastian Wickenburg, Aeneas Rooch, Johannes Groß http://www.mathematik.de/spurendermathematik/spudema_beitraege/beitraege/rooch/nkap02.html

PNG

PNG - Portable Network Graphics

[EN]

PNG Homepage

http://www.libpng.org/pub/png/

The Story of PNG

[EN] http://www.libpng.org/pub/png/slashpng-1999.html

W3C - PNG (Portable Network Graphics)

[EN] http://www.w3.org/Graphics/PNG/

W3C - PNG Specification Second Edition

[EN] http://www.w3.org/TR/2003/REC-PNG-20031110/

Web Colors - A user-friendly introduction to PNG image format

[EN] http://www.webcolors.freeserve.co.uk/png/

Explorer versus PNG (AlphaImageLoader)

[EN]

in short, explorer it's a shit, and in order to make png alpha channel work you have to use a non standard feature

http://redvip.homelinux.net/varios/explorer-png-en.html

Supporting alpha channel of PNG Graphics in Internet Explorer

[EN] http://webfx.eae.net/dhtml/pngbehavior/pngbehavior.html

Improved PNG Behavior

[EN] Andrew Gregory

Sometime around August/September in 2003 I became aware of Erik Arvidsson’s PNG Behavior technique to allow Internet Explorer to support alpha-transparent PNG graphics. I (and many others) thought it was fabulous, however, there were some things I didn’t like: It needed an external GIF file. PNG images would not appear in the print preview or on printouts. [I don’t know if this issue only affects me or not - I’ve never heard of any complaints about this]. I occasionally saw a Javascript error related to the non-initialisation of the realSrc variable. [I’ve never heards of any complaints about this, either]It has no effect on PNG images in style sheets.

http://www.scss.com.au/family/andrew/webdesign/pngbehavior/

Microsoft - AlphaImageLoader Filter

[EN] http://msdn.microsoft.com/workshop/author/filter/reference/filters/alphaimageloader.asp

PNG Transparency Test

[EN] Trevor Morris

PNG alpha IMG-vs-AlphaImageLoader demonstration

http://user.fundy.net/morris/pngtest/pngtest.html

GIF

Graphics Interchange Format - General Information

[EN]

This document describes in detail the definition of the Graphics Interchange Format

http://256.com/gray/docs/gifspecs/general.html

Graphics Interchange Format GIF87a Specification

[EN] http://www.w3.org/Graphics/GIF/spec-gif87.txt

Graphics Interchange Format GIF89a Specification

[EN] http://www.w3.org/Graphics/GIF/spec-gif89a.txt

LZW compression used to encode/decode a GIF file

[EN] Bob Montgomery http://www.catb.org/~esr/giflib/doc/lzgif.txt

Unisys - LZW Patent and Software Information

[EN]

License Information on GIF and Other LZW-based Technologies

http://www.unisys.com/about__unisys/lzw

Unisys/CompuServe GIF Controversy

[EN] http://lpf.ai.mit.edu/Patents/Gif/Gif.html

The gif2png home page

[EN]

The gif2png program converts files from the obsolescent Graphic Interchange Format to Portable Network Graphics

http://catb.org/~esr/gif2png/

SVG

W3C - Scalable Vector Graphics (SVG)

[EN] http://www.w3.org/Graphics/SVG/

W3C - Scalable Vector Graphics (SVG) 1.1 Specification

[EN] http://www.w3.org/TR/SVG11/

Comparison PNG - GIF

W3C - GIF or PNG - Quality Web Tips

[EN] http://www.w3.org/QA/Tips/png-gif

Benefits of the PNG Image Format

[EN] Bill Bither http://www.atalasoft.com/PNG.aspx

Miscellaneous

W3C - Graphics Activity Statement

[EN] http://www.w3.org/Graphics/Activity

Data Compression - Systematisation

[EN] Tilo Strutz http://www-nt.e-technik.uni-rostock.de/~ts/Datacompression/compression.html

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