[Octave-patch-tracker] [patch #9729] image package -- RGB2XYZ function

[Pascal Dupuis]

URL:
  <https://savannah.gnu.org/patch/?9729>

                 Summary: image package -- RGB2XYZ function
                 Project: GNU Octave
            Submitted by: cdemills
            Submitted on: Thu 29 Nov 2018 10:45:42 AM UTC
                Category: Forge : new feature
                Priority: 5 - Normal
                  Status: In Progress
                 Privacy: Public
             Assigned to: None
        Originator Email: 
             Open/Closed: Open
         Discussion Lock: Any

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Details:

Hello,

the enclosed patch implements White Point adaptation as explained at
http://www.brucelindbloom.com/index.html?Eqn_RGB_XYZ_Matrix.html 

The idea is to take some input in RGB with some color point, and convert it to
XYZ which by default use a "flat" (equispectral) reference.

I need this in order to extract luminances from picture. Our lab disposes of a
luminance calibrator with an incandescent ('A") ref; I would like to implement
luminance extraction whatever the WP of the camera.

Regards

Pascal



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File Attachments:


-------------------------------------------------------
Date: Thu 29 Nov 2018 10:45:42 AM UTC  Name: wp_adapt.pat  Size: 9KiB   By:
cdemills

<http://savannah.gnu.org/patch/download.php?file_id=45551>

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