ICC profile in stitched images

[Mike Cowlishaw]

I have been investigating why the panoramas I've stitched using PTGui take much longer to load in PanGazer than other panoramas.   It turns out that ancient code of mine uses Windows to load images if they have ICC profiles (instead of turbo-jpeg if they don't).

I'll look at handling ICC profiles more carefully later (they are usually very rare), but current question is: why does PTGui add an ICC profile when none of the source images have one?

Mike

[PTGui Support]

Hi Mike,

I guess it's because PTGui is a color managed application, and RGB
values are meaningless without a color profile.

Kind regards,

Joost Nieuwenhuijse
www.ptgui.com

> --
> You received this message because you are subscribed to the Google
> Groups "PTGui Support" group.
> To unsubscribe from this group and stop receiving emails from it, send
> an email to ptgui+un...@googlegroups.com
> <mailto:ptgui+un...@googlegroups.com>.
> To view this discussion on the web visit
> https://groups.google.com/d/msgid/ptgui/64ce699a-bfc2-4190-9470-c378d36867ben%40googlegroups.com
> <https://groups.google.com/d/msgid/ptgui/64ce699a-bfc2-4190-9470-c378d36867ben%40googlegroups.com?utm_medium=email&utm_source=footer>.

[Mike Cowlishaw]

OK, thanks, but the profile has no effect that I can detect (the pels all end up the same as though there were no profile).

I guess I'm going to have learn more about ICC profiles than I wanted to so I can detect a 'null' profile :-).   (It's a bit difference in performance; a 100MB panorama taking 5 seconds to load instead of sub-second).

Mike

To unsubscribe from this group and stop receiving emails from it, send an email to ptgui+un...@googlegroups.com.
To view this discussion on the web visit https://groups.google.com/d/msgid/ptgui/1c9a01ef-d8e9-c008-4962-4365d72c8049%40ptgui.com.