[Octave-bug-tracker] [bug #45456] hsv2rgb is very strict about its input values

[H. G.]

Follow-up Comment #7, bug #45456 (project octave):

Here is an even easier (and more Matlab compatible) suggestion:
* Use tol=2e-10 as discussed earlier.
* For input values in the interval [-tol, 1+tol] : just do the calculation
anyways. No error, no warning, no data clipping. --> This will for all
reasonable image data just take care of rounding errors.
* For input values outside of [-tol, 1+tol] : issue a warning and do the
calculation anyways. --> This will produce "nonsense in, nonsense out", but
since Matlab does it, we can do it as well. But I'd like to issue a warning
here.

A small PATCH that does the above changes to hsv2rgb.m, rgb2hsv.m and
rgb2ntsc.m is attached.

(file #34450)
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Additional Item Attachment:

File name: tolerant_rgb2hsv.diff          Size:2 KB


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