Image reading from resource file giving warning

Pradeep Kumar

Hi,

I have png images in resource file, i am reading from resource file.

I am getting the below mentioned warning
Unexpected state, Qt, libpng warning: iCCP: known incorrect sRGB profile

How can i resolve it?.

Thanks,

Ratzz

@Pradeep-Kumar
Did you refer http://stackoverflow.com/questions/22745076/libpng-warning-iccp-known-incorrect-srgb-profile
https://forum.qt.io/topic/58638/solved-libpng-warning-iccp-known-incorrect-srgb-profile-drive-me-nuts
or https://bbs.archlinux.org/viewtopic.php?id=168144 ?

Pradeep Kumar

Hi,

Downloaded and Installed Magick, and used the

command :

magick "<source-path>\sample.png" "<destinatio-path>\sample.png".

Now if i use the image which is present in destination path, i am not getting the above mentioned warning.

Thanks,

Pradeep Kumar

Can anyone tell the meaning of

the iCCP chunk from the PNG image.

????

Thanks,

mrjj

@Pradeep-Kumar said in Image reading from resource file giving warning:

iCCP chunk from the PNG image.

Its part of the format
http://www.libpng.org/pub/png/spec/1.2/PNG-Chunks.html#C.iCCP
Its the color profile area.

the warning comes from app like photoshop on windows adding a profile that libpng consider not ok.
So it says to you "your image contains a known bad profile and i am warning you about it"
Its not a Qt thing but the pnglib that does it.

Been there for some years now :;)
Read the links that @Ratzz provides.
I also looked at in at some point.
U can rebuild the png plugin and disable warning or use an image program to remove the (known) fault
profile.
Or simply ignore it. Colors looked fine for all RGB i tested.
Also after upgrading to 5.7 i have not seen it since.
Still use the same version of photoshop so something might have changed.
(or they fixed photoshop) :)

Pradeep Kumar

@mrjj

Thanks for the answer.

command :

magick "<source-path>\sample.png" "<destinatio-path>\sample.png".

apart from the command is their any other way. to remove the chunks?.

Thanks,

mrjj

@Pradeep-Kumar
there are tons of info on google
http://www.imagemagick.org/discourse-server/viewtopic.php?t=22444
But any method works as long as warning is removed.

Pradeep Kumar

yep that command was one of the method where warnings was removed,
i observed in linux , the app crashed because of warning, will it treat it as error in some paltforms?.

Thanks,

mrjj

@Pradeep-Kumar
Hi
no it should always be a warning.
Should never cause a crash.
That must be something else.

Pradeep Kumar

so hmmmm k , anyways thanks for the forum , and for the path to get the answers.

Thanks,

mrjj

@Pradeep-Kumar
well thats the whole point of the forum :)
Good u like it.

Can you give one of the pngs that give s warning ?
(postimage.org)

I want to see if same profile as mine. ( from photoshop)

Pradeep Kumar

This post is deleted!

Pradeep Kumar

how do you check the profile?.
can u explain and teach.

Thanks,

mrjj

@Pradeep-Kumar
Hi
I use photoshop. It has full color management dialogs.
alt text

Pradeep Kumar

the highlighted data is chuck in sample.png?

Thanks,

mrjj

@Pradeep-Kumar

well its meta data. not the actual chunk but same information.
alt text