bugGNU Octave - Bugs: bug #63477, imread call with alpha in return...


bug #63477: imread call with alpha in return list of image without alpha channel

Submitter:  Sebastien <powindah>
Submitted:  Tue 06 Dec 2022 04:00:29 PM UTC
Category:  Octave Function Severity:  3 - Normal
Priority:  5 - Normal Item Group:  Matlab Compatibility
Status:  Fixed Assigned to:  None
Originator Name:  Open/Closed:  * Closed
Release:  * 6.4.0 Operating System:  * GNU/Linux
Fixed Release:  9.1.0 (current stable) Planned Release:  9.1.0 (current stable)
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Sun 25 Dec 2022 04:31:45 AM UTC, comment #1: 

I fixed this on the default branch in this chageset (http://hg.savannah.gnu.org/hgweb/octave/rev/671ef1b7c3fa).

Marking as Fixed and closing report.

Rik <rik5>
Group administrator
Tue 06 Dec 2022 04:00:29 PM UTC, original submission:  

Reading an image with an alpha channel such as

[im, map, alpha] = imread("http://tiles.openseamap.org/seamark/12/2180/1240.png");

Successfully executes while reading one without an alpha channel in the same manner

[im, map, alpha] = imread("http://a.tile.openstreetmap.org/12/2183/1242.png");

return a "some elements undefined in return list" error. It successfully completes if the alpha return value is omitted.

For matlab compatibility, the function should return successfully in both cases. alpha will be an empty matrix if none is present.

Sebastien <powindah>


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    Follow 4 latest changes.

    Date Changed by Updated Field Previous Value => Replaced by
    2022-12-25 rik5 StatusNone Fixed
        Open/ClosedOpen Closed
        Fixed ReleaseNone 9.1.0 (current stable)
        Planned ReleaseNone 9.1.0 (current stable)

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