Difference between revisions of "Colour Management Tests"

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(Project Details)
(Project Details)
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'''Technote007:''' Use URI scheme for reftest [http://en.wikipedia.org/wiki/Data:_URI_scheme DATA URI Scheme Wiki] <br /> [http://software.hixie.ch/utilities/cgi/data/data URI kitchen] [http://www.scalora.org/projects/uriencoder/ URI Encoder]
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'''Technote007:''' Use URI scheme for reftest [http://en.wikipedia.org/wiki/Data:_URI_scheme DATA URI Scheme Wiki]  
  
 
'''Technote008:''' How do you see pixels outside a floating point tolerance (> 0.n) ?
 
'''Technote008:''' How do you see pixels outside a floating point tolerance (> 0.n) ?
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'''Techtool001:''' layout/tools/reftest/reftest-to-html.pl
 
'''Techtool001:''' layout/tools/reftest/reftest-to-html.pl
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'''Techtool002:'''<br /> [http://software.hixie.ch/utilities/cgi/data/data URI kitchen] [http://www.scalora.org/projects/uriencoder/ URI Encoder]
  
 
== Project News ==
 
== Project News ==

Revision as of 12:21, 20 September 2008

Colour Management Tests

Project Description

Write reftests to compare images in order to deal with floating point tolerance. This includes dealing with things like Monitor Profiles, profiles in JPEG (i.e., JPEGs get changed based on colour profile info). See discussion of colour profiles in Firefox 3 here. It would be useful to be able to compare to PNGs with a reftest, perhaps creating an image diff tool, where pixels outside a floating point tolerance (> 0.n) would somehow be highlighted so you can see what is different. Done.

This will require some graphics and image knowledge (i.e., Photoshop, what colour is on a computer, etc).

Project Leader(s)

Ezadkiel Villarico Marbella

Project Contributor(s)

Name(s) of people casually working on the project, or who have contributed significant help. Include links to personal pages within wiki

NOTE: only Project Leader(s) should add names here. You can’t add your own name to the Contributor list.

Project Details

REFTEST READ ME

TechNote001: Reftest framework contains image rendering reftests in module/libpr0n/test/reftest inside the mozilla source.

Technote002: You must enable colour management you must go to your about:config and search for gfx.color_management.mode and switch it to 1

Technote003: What are ways to embed colour profiles into images? Photoshop does it.

Technote004: Create Images with sRGB colour profile embedded.

Technote005: Tricky bit on rendering to get the firefox rendering back as an image.

Technote006: A way to do this Draw the image into a canvas http://developer.mozilla.org/En/Canvas_tutorial:Using_images Then call toDataURL or getPixelData to get the pixels out. It doesn't reverse-colour-correct the data read from canvas methods which is incorrect, but useful. Reftests already give a data URL when the test fails.

toDataURL:

http://cow.neondragon.net/index.php/681-Canvas-Todataurl http://developer.mozilla.org/En/Code_snippets/Canvas

getPixelData:

no information


Technote007: Use URI scheme for reftest DATA URI Scheme Wiki

Technote008: How do you see pixels outside a floating point tolerance (> 0.n) ?


Techtool001: layout/tools/reftest/reftest-to-html.pl

Techtool002:
URI kitchen URI Encoder

Project News

- Sept 19/08

made some builds with --enabled-tests

learning how to make reftests.

reading over notes etc.