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[Octave-bug-tracker] [bug #32986] imread() reads .png with alpha channel
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From: |
anonymous |
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Subject: |
[Octave-bug-tracker] [bug #32986] imread() reads .png with alpha channel as an unexpected array format |
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Date: |
Wed, 13 Apr 2011 10:12:34 +0000 |
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User-agent: |
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.2.13) Gecko/20101203 Firefox/3.6.13 |
Follow-up Comment #6, bug #32986 (project octave):
Behaviour of MATLAB R2010b, using the attached files (map is empty in all
cases):
>> [img, map, alpha] = imread('transparency_pic_color.png');
>> size(img)
ans =
30 30 3
>> size(alpha)
ans =
30 30
>> [img, map, alpha] = imread('transparency_pic_gray.png');
>> size(img)
ans =
30 30 3
>> size(alpha)
ans =
30 30
>> [img, map, alpha] = imread('transparency_pic_gray2.png');
>> size(img)
ans =
30 30
>> size(alpha)
ans =
30 30
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