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[Octave-bug-tracker] [bug #41240] image class is not preserved in cdata
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From: |
Pantxo Diribarne |
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Subject: |
[Octave-bug-tracker] [bug #41240] image class is not preserved in cdata field of graphics handle |
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Date: |
Sun, 27 Apr 2014 08:49:19 +0000 |
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User-agent: |
Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:28.0) Gecko/20100101 Firefox/28.0 |
Follow-up Comment #4, bug #41240 (project octave):
Here is a test in Matlab:
% Integer, scaled
img = uint8 (meshgrid (0:250));
h = imshow (img);
class (get (h, 'cdata')) %% uint8
% Integer, true color
img = repmat (uint8 (meshgrid (0:250)), [1 1 3]);
h = imshow (img);
class (get (h, 'cdata')) %% uint8
% Integer, indexed
img = uint8 (meshgrid (1:256));
h = imshow (img, colormap ('jet'));
class (get (h, 'cdata')) %% uint8
% Logical
img = meshgrid (0:250) > 125;
h = imshow (img);
class (get (h, 'cdata')) %% logical
The image class is always preserved for the case of logical and uint8 integer
images. Tell me if more exhaustive tests are needed.
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