[Octave-bug-tracker] [bug #51769] [octave forge] (image) imresize bilinear interpolation inaccurate

[Christof Kaufmann]

Follow-up Comment #1, bug #51769 (project octave):

So I made a patch for that:
https://bitbucket.org/ChristofKaufmann/octave-image/commits/branch/imresize-fix
(If you like to have a patch as attached file rather, please tell me.)

The problem in the original code were mainly the indices. These were quite
wrong. I fixed the indices, which changes the behaviour of all methods;
'bilinear' works now, 'nearest' was working and is still working, 'bicubic'
was not passing the test and is still not. So 'bicubic' might have to be
fixed. Also, anti-aliasing is not implemented yet.

The patch also updates the matlab reference outputs and adds and modifies a
few tests. It is split into two commits, since the first just makes a few
coding style changes, but does not change any behaviour. The second commit has
the real content.

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