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.

 [http://zadkielm.blogspot.com/search/label/reftest Project Blog]Up-To-Date Information [http://zadkielm.blogspot.com/2008/10/pixel-reftesting-with-profiles.html Colour Profile Reftest 0.1] Gained basic knowledge of reftesting with colour profiles [http://zadkielm.blogspot.com/2008/11/colour-profile-reftest-02and-then-there.html Colour Profile Reftest 0.2] Created tests and filed bugs [http://zadkielm.blogspot.com/2008/12/reftest-03-manifesting-bug-459617.html Colour Profile Reftest 0.3] Research on tracking down bug and test manifests

You must enable colour management you must go to your about:config and search for set gfx.color_management.mode to <br />‘0′ for no color management,<br />‘1′ for full color management, and switch it to 1<br />‘2′ (the default) for tagged(with ICC)-only correction<br />

Photoshop does it.Preview in Mac OSX does it which means '''Technote004:'''Create Images with sRGB colour profile embedded.you can use Automator to apply profiles on multiple images

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

''toDataURL'Technote007:''' Use URI scheme for reftest [http://en.wikipedia.org/wiki/Data:_URI_scheme DATA URI Scheme Wiki]

'''Techtool002:'''<br /> [http://cowsoftware.neondragonhixie.netch/index.phputilities/cgi/data/681-Canvas-Todataurldata URI kitchen] [http://developerwww.mozillascalora.org/Enprojects/Code_snippetsuriencoder/CanvasURI Encoder]

'''Technote007:''' Use URI scheme for reftest [httpbug 459617 detailshttps://enbugzilla.wikipediamozilla.org/wiki/Data:_URI_scheme DATA URI Scheme Wiki]   '''Techtool001:''' layout/tools/reftest/reftest-to-htmlshow_bug.pl '''Techtool002:'''<br /> [http://software.hixie.ch/utilities/cgi/data/data URI kitchen] [http://www.scalora.org/projects/uriencoder/ URI Encoder]?id=459617

'''Testing GOAL001:'''simple to complex. <br />For example <br />(a) colors x000000 and xFFFFFF, <br />(b) - then do the primary colorsadd some conditional code in cmsDoTransform that checks for that pixel, <br />(c) then complimentary colorsprints it on input, <br />(d) then get into things like alpha values <br />(e) and color blending. <br />prints the transformed pixel

'''Focus 001'''<br />focus on getting together<br />various profiles and<br />various images,<br />creating tagged -and<br />untagged ones <br />see if you can confirm that should look the sameissue is within LCMS,<br />or whether it's actually somewhere else

-if it's an LCMS issue if you can get the lcms code to say that it's outputting different pixels on different platforms for the same input pixel and then plugging those into the reftest framework. <br />transform

Got some Goals...and Focus. - Sept 26/08 Been testing thing for the past few days...trying to get the tests right. - Sept 28/08 I think I got the tests right.Profiles [[Image:ICCProfiles28Sept08.zip]] - Oct 3/08 Reading on colours LAB vs RGB vs CMYK Has a conclusion on [http://zadkielm.blogspot.com/2008/10/reftesting-colour-profiles-in-ubuntu.html the ubuntu] Update the test [http://zenit.senecac.on.ca/wiki/imgs/Reftest-colorprofiles_04Oct08.zip updated tests] - Oct 11/08 spent time isolating 2 pixels that were failing on the reftests in Ubuntutested to see if the suspected pixels were failing...yes they still fail. [http://zadkielm.blogspot.com/2008/10/pixel-reftesting-with-profiles.html Pixels In Isolation] simplified reftest to show failing pixel and reftest differences in GIMP - Oct 12/08 filed a bug[https://bugzilla.mozilla.org/show_bug.cgi?id=459617 bug#459617] trying to narrow it down. - Oct 19/08 how to test in different configurations. - Nov 9/08 updating the test...it's too [http://zadkielm.blogspot.com/2008/11/hg-add-to-patches.html big] - Nov 24/08learning about hg queuesadding and importing folders and files patches.looking at [https://bugzilla.mozilla.org/show_bug.cgi?id=463221 bug] comments particularly:Yay, reftests! A few tiny drive-by nits: "pngsuite" is actually an official PNG test suite, so these should go under adifferent name. Say, modules/libpr0n/test/reftest/png/color-profile/. A single reftest.list manifest is fine, no need to break it into small chunks.The readme could just be distilled down into plain test, and rolled into themanifest as brief comments.