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From: | Pantxo Diribarne |
Subject: | [Octave-bug-tracker] [bug #49137] some grayscale images are displayed badly |
Date: | Tue, 20 Sep 2016 13:35:58 +0000 (UTC) |
User-agent: | Mozilla/5.0 (X11; Ubuntu; Linux x86_64; rv:48.0) Gecko/20100101 Firefox/48.0 |
Update of bug #49137 (project octave): Status: None => Confirmed _______________________________________________________ Follow-up Comment #1: Hi, I think the very first issue is that the image data we get from GraphicsMagick (imread) are not the original ones. I tried to run "imfinfo" and "imread" in Octave and Matlab (R2016a on linux) and the main differences are : * imfinfo: the "ColorType" is "Grayscale" in Octave and "TrueColor" in Matlab * imread: consequently returns no cmap in both cases but a 19-by-19 matrix in Octave and a 19-by-19-by-3 Matlab I think this problem has already been discussed by Carnë extensively (who I am ccing). AFAIR it boils down to GraphicsMagick does not give access to the actual original data. Now a workaround for the first issue ("imshow (filename)") could be to treat the image as grayscale when imfinfo tels to do so. _______________________________________________________ Reply to this item at: <http://savannah.gnu.org/bugs/?49137> _______________________________________________ Message sent via/by Savannah http://savannah.gnu.org/
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