[Octave-bug-tracker] [bug #45088] image package: rangefilt requires domain and image to have equa number of dimensions

[Carnë Draug]

Update of bug #45088 (project octave):

                 Summary: image package: rangefilt doesn't work on RGB images
=> image package: rangefilt requires domain and image to have equa number of
dimensions

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Follow-up Comment #1:

I confirm this problem. The problem has to do how the padding is done.  The
function that does all the work, __spatial_filtering__, requires things to
have the same number of dimensions. A workaround for this is:


pkg load image
I = ones(10,10,3);
J = rangefilt (I, padarray (ones (3), [0 0 1]));


This could be fixed by padding the things properly inside rangefilt (see
psf2otf for some tips on how to handle padding of things and arbitrary number
of dimensions).  However, it seems to me that this whole function could be
rewritten to use imerode and imdilate for some performance as well.

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