[Octave-patch-tracker] [patch #8713] image package: new color conversion functions: rgb2lab etc.

[Carnë Draug]

Follow-up Comment #6, patch #8713 (project octave):

I took another look at this and the tests still fail. The reason is simple.
Several of the tests convert a colourmap back and forth between colourspaces,
some of which do have outside the interval [0 1]. The private functions make
use of iscolormap which in octave 4.0 will return false for values outside the
[0 1] range.

That explains why Avinoam tests pass in Octave development sources. It does
not explain how they pass on your system Harmut. I'm guessing you have patched
your own Octave installation.

I have added a copy of iscolormap into private from the current core
development sources which means the tests now pass:

http://hg.code.sf.net/p/octave/image/rev/ac4670d5270c

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