Re: [hugin-ptx] colors and brightness change when stitching

2012-12-17 Thread David Haberthür
Ciao Michael.
I'm an avid fan of hugin, but for stitching microscope photos I recommend
http://www.xuvtools.org/, which is especially adapted for this task.
David


On Mon, Dec 10, 2012 at 6:03 PM, Michael mane...@gmail.com wrote:

 Hello, I'm trying to stitch some photos I took with a microscope into one
 big image. For some reason, the brightness or color intensity changes. How
 do I make it use the original colors?

 Thanks.

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Re: [hugin-ptx] colors and brightness change when stitching

2012-12-17 Thread Terry Duell
On Mon, 17 Dec 2012 19:55:02 +1100, David Haberthür  
em...@davidhaberthuer.ch wrote:



Ciao Michael.
I'm an avid fan of hugin, but for stitching microscope photos I recommend
http://www.xuvtools.org/, which is especially adapted for this task.


Michael,
If the limitations of xuvtools make it unsuitable, try hugin again, but  
set the EV for each image to be equal to the highest EV of your set of  
images. I have had some success with that approach for some problems.


Cheers,
--
Regards,
Terry Duell

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[hugin-ptx] colors and brightness change when stitching

2012-12-10 Thread Michael
Hello, I'm trying to stitch some photos I took with a microscope into one 
big image. For some reason, the brightness or color intensity changes. How 
do I make it use the original colors?
 
Thanks.

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Re: [hugin-ptx] colors

2010-11-09 Thread paul womack

Eric O'Brien wrote:

The color profiles in the files are different.

KJG.jpg is Generic RGB Profile but
IMG_5673.jpg is Adobe RGB (1998)

In Photoshop, if I assign Adobe RGB (1998) to the first file, it then 
looks substantially like the second file.


The question of course is:  why the color profiles are different?  I 
have *thought* that Hugin retains color profiles.


I wonder if the inputs have multiple profiles, and hugin is arbitrarily picking 
ONE
for the output.

   BugBear

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Re: [hugin-ptx] colors

2010-11-09 Thread Carl von Einem

paul womack schrieb am 09.11.10 10:57:

Eric O'Brien wrote:

The color profiles in the files are different.
KJG.jpg is Generic RGB Profile but
IMG_5673.jpg is Adobe RGB (1998)
In Photoshop, if I assign Adobe RGB (1998) to the first file, it then
looks substantially like the second file.

The question of course is: why the color profiles are different? I
have *thought* that Hugin retains color profiles.


I wonder if the inputs have multiple profiles, and hugin is arbitrarily
picking ONE
for the output.


I consistently have to reassign the correct profile to the output file 
(using Harry's Mac OS X builds). Isn't exiftool supposed to do this job?
It doesn't matter if i use JPGs (from the camera) or 16 bit Tiffs (saved 
with Photoshop) as input images.


Carl

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Re: [hugin-ptx] colors

2010-11-09 Thread Bruno Postle

On Tue 09-Nov-2010 at 11:56 +0100, Carl von Einem wrote:

Eric O'Brien wrote:



I wonder if the inputs have multiple profiles, and hugin is arbitrarily
picking ONE for the output.


It certainly does this, or is supposed to. i.e. it treats the input 
and output data as unprofiled, then copies any profile from the 
first photo to the final output.


It could be modified to convert all photos to a universal 
colourspace on reading and to a specified colourspace when writing, 
but there has never been any request for this.


I consistently have to reassign the correct profile to the output 
file (using Harry's Mac OS X builds). Isn't exiftool supposed to do 
this job?


I have never tested it, it could be broken.

--
Bruno

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Re: [hugin-ptx] colors

2010-11-09 Thread Carl von Einem

Bruno Postle schrieb am 10.11.10 00:26:


It could be modified to convert all photos to a universal colourspace on
reading and to a specified colourspace when writing, but there has never
been any request for this.


I think that would a very clever feature.

Carl

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Re: [hugin-ptx] colors

2010-11-08 Thread Eric O'Brien

The color profiles in the files are different.

KJG.jpg is Generic RGB Profile but
IMG_5673.jpg is Adobe RGB (1998)

In Photoshop, if I assign Adobe RGB (1998) to the first file, it then  
looks substantially like the second file.


The question of course is:  why the color profiles are different?  I  
have *thought* that Hugin retains color profiles.


eo


On Nov 8, 2010, at 4:06 PM, sneike wrote:


seems like the colors of my photos change when i import them into
hugin.. also the quality of the photo is involved..
for example, this is the photo i import (http://dl.dropbox.com/u/ 
37538/

compared/IMG_5673.jpg) and this is the exported one just setting some
vertical points (http://dl.dropbox.com/u/37538/compared/KJG.jpg)

just note that i can see the color and quality difference already in
the hugin's tabs..

how can avoid this annoying issue?

thanks
DNL


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