Tom's Hardware > Forum > Digital Camera > Digital Camera General > color gamut conversion

color gamut conversion

Forum Digital Camera : Digital Camera General - color gamut conversion

Tom's Hardware: Over 1.4 million members in 6 different countries available to answer all your high-tech questions. Sign up now! Its free!
Ask the community Add a reply
Word :    Username :           
 
Anonymous   04-19-2005 at 08:24:57 PM

Archived from groups: rec.photo.digital (More info?)

 

Hi,

I'm interesting in the sequence of events of light which comes from an
arbitrary scene, travels through a digital camera, and ends in a
picture (e.g. bmp-file).

Does anybody know some good references / Websites about this topic?

For example I read something about color gamut conversion that happens
when the sensor color space is converted to another color space (e.g.
RGB).
Can anybody explain something more about this? For example what is the
sensor color space? Why is it necessary because you already apply the
Bayer matrix which gives you RGB values, I thought?


Thanks for any information,

Peter

Add a reply
Sponsored Links
Register or log in to remove.
Paul   04-19-2005 at 11:49:54 PM
- 0 +

Archived from groups: rec.photo.digital (More info?)

 

Peter Vermeer wrote:
> Hi,
>
> I'm interesting in the sequence of events of light which comes from an
> arbitrary scene, travels through a digital camera, and ends in a
> picture (e.g. bmp-file).
>
> Does anybody know some good references / Websites about this topic?


These links were just posted in another thread:
<http://cs.haifa.ac.il/hagit/courses/ist/Lectures/IST12_ColorManagementx4.pdf>
<http://wwwde.kodak.com/US/en/corp/researchDevelopment/technologyFeatures/gamut.shtml>


>
> For example I read something about color gamut conversion that happens
> when the sensor color space is converted to another color space (e.g.
> RGB).
> Can anybody explain something more about this? For example what is the
> sensor color space? Why is it necessary because you already apply the
> Bayer matrix which gives you RGB values, I thought?


All devices have their own distinctive bias so standardized test charts
and color reading machines create software profiles to quantify the
imperfections. Also various devices and formats have limited range so
you need to specify how to translate or clip from one gamut to another.

Reply to Paul
Stacey   04-20-2005 at 03:33:01 AM
- 0 +

Archived from groups: rec.photo.digital (More info?)

 

Peter Vermeer wrote:

> Hi,
>
> I'm interesting in the sequence of events of light which comes from an
> arbitrary scene, travels through a digital camera, and ends in a
> picture (e.g. bmp-file).
>
> Does anybody know some good references / Websites about this topic?
>
> For example I read something about color gamut conversion that happens
> when the sensor color space is converted to another color space (e.g.
> RGB).
> Can anybody explain something more about this? For example what is the
> sensor color space? Why is it necessary because you already apply the
> Bayer matrix which gives you RGB values, I thought?
>
>

The main reason for "working" color spaces is they are based on a central
grey point. That means you can adjust contrast etc without shifting the
color balance. Trying to use say a printer profile as a working color space
is a BAD idea..
--

Stacey

Reply to Stacey
Anonymous   04-20-2005 at 08:39:49 PM
- 0 +

Archived from groups: rec.photo.digital (More info?)

 

Peter Vermeer wrote:
>
> Hi,
>
> I'm interesting in the sequence of events of light which comes from an
> arbitrary scene, travels through a digital camera, and ends in a
> picture (e.g. bmp-file).
>
> Does anybody know some good references / Websites about this topic?
>
> For example I read something about color gamut conversion that happens
> when the sensor color space is converted to another color space (e.g.
> RGB).
> Can anybody explain something more about this? For example what is the
> sensor color space? Why is it necessary because you already apply the
> Bayer matrix which gives you RGB values, I thought?
>
> Thanks for any information,
>
> Peter

This is a b-i-g- subject, too big to answer in a NG post. Google for
the subject, or buy a book.

Colin

Reply to Anonymous
Anonymous   04-20-2005 at 04:38:20 PM
- 0 +

Archived from groups: rec.photo.digital (More info?)

 

Peter Vermeer <logiclips@yahoo.com> wrote:

> I'm interesting in the sequence of events of light which comes from an
> arbitrary scene, travels through a digital camera, and ends in a
> picture (e.g. bmp-file).

> Does anybody know some good references / Websites about this topic?

The classic reference on this topic is:

The Reproduction of Colour, 6th Edition
R.W.G. Hunt
ISBN: 0-470-02425-9
Hardcover
724 pages
September 2004

http://eu.wiley.com/WileyCDA/Wiley [...] 24259.html

Andrew.

Reply to Anonymous
Ask the community Add a reply
Tom's Hardware > Forum > Digital Camera > Digital Camera General > color gamut conversion
Go to:

There are 1239 identified and unidentified users. To see the list of identified users, Click here.

Forum map
Bestofmedia Forum ©
2000-2009 Bestofmedia Group
Page generated in 0.230 seconds
Please mind

You are about to answer a thread that has been inactive for more than 6 months.
If you still wish to proceed, please ensure that your posting is original and does not duplicate or overlap any prior responses to this thread.

Add a reply Cancel
Sponsored links
  • Ask the community now
  • Publish
Ad
Related Topics
See all relatives topics
They won a badge
Join us in greeting them
How do I win badges?