#872 libpng warning: iCCP: known incorrect sRGB profile

to be defined
new
nobody
None
task
minor
Graphics
2.1.0-dev
2014-06-09
2014-01-27
Scott
No

Latest version of libpng (1.6.8) has additional validation which causes the following warning to appear in the console:

libpng warning: iCCP: known incorrect sRGB profile

Root Cause:
PNG images assigned the following Color Profile confirmed to trigger the warning:

IEC 61966-2.1 Default RGB colour space - sRGB

Corrective Action:
The Color Profile can be reassigned within Gimp as follows:
- Load the PNG into Gimp
- Review the Color Profile (Image > Image Properties > Color Profile)
- If the profile is "IEC 61966-2.1 Default RGB colour space - sRGB" then assign a new color profile
- Assign new profile via Image > Mode > Assign Color Profile
- Assign "RGB workspace (sRGB built-in)"
- Export the modified PNG

Corrective action has been verified by updating the PNG files associated with circuit Corkscrew. See attached Before.png and After.png images.

The following files were modified for Corkscrew:

64PASS1.png
64PASS6.png
64PASS9.png
asphalt.png
asphalt2.png
asphalt-h.png
asphalt-he.png
asphalt-hs.png
asphalt-l.png
asphalt-le.png
asphalt-ls.png
asphdots_n.png
asphsand_n.png
asphside_n.png
back-sign.png
MONSTART.png
outline.png
roadA-pit.png
sandgrvl.png
sand-new.png
TIREBLAK2.png
tr-barrier-arbor.png
tr-barrier-arbor-blue.png
tr-barrier-arbor-fence_n.png
tr-curb-wb-l.png
tr-curb-wb-l-o.png
tr-curb-wb-r.png
tr-curb-wb-r-o.png
treeS3_n.png
TRUCK07.png
turn50.png
turn100.png
turn150.png

Know areas where this warning still appears:
Grand Prix Circuits - Aalborg preview
Grand Prix Circuits - Brondehach preview
Grand Prix Circuits - Chemisay preview
Grand Prix Circuits - Espie preview
Grand Prix Circuits - Forza preview
Grand Prix Circuits - Goldstone-Sand preview
Grand Prix Circuits - Karwada preview
Grand Prix Circuits - Migrants preview
Grand Prix Circuits - Ruudskogen preview
Devlopment tracks - Forza OSG preview
Dirt Tracks - Garguree preview
Karting Tracks - x-kart1 preview
Road Tracks - Wheel 1 preview
Road Tracks - Autodromo Lombaro preview
Road Tracks - Olethros Road preview
Road Tracks - Pinabashi Park preview
Road Tracks - Salzfelden preview
Speedways - Milky Five preview
Speedways - Newton Cup preview

2 Attachments

Discussion

  • Scott
    Scott
    2014-01-27

    Shows warning in console

     
  • Scott
    Scott
    2014-01-27

    Issue resolved

     
  • rvlander
    rvlander
    2014-01-30

    Hi Scott.

    Nice. However, this correction havre already been done by Xavier. The fact is that he did not commit them because some guys of the team have low internet connection and would be angry at downloading a huge amount of image files.

     
  • beaglejoe
    beaglejoe
    2014-02-03

    Just a wild idea.
    Would it be possible to script this conversion?
    Then people with slow connections could just run the script locally instead of trying to do an svn update of all these changes.

     
  • simon wood
    simon wood
    2014-06-09

    • Description has changed:

    Diff:

    • assigned_to: Boris Antonevich --> nobody