On 11/28/2016 3:23 AM, scott wrote:
>>> May I ask the stupid question, "why not"?
>>>
>>> I would expect the Lch colour space to encompass all the RGB colour
>>> space, so the boundaries of the latter should be sufficient to bound the
>>> shape.
>>>
>>> My guess is that the issues you see with the shape are due to bogosities
>>> in your colour conversion functions.
>>>
>>
>> L, C and H are supposed to form a cylinder. There are some very small
>> sRGB bits poking outside of the cylinder. I guess I could show the bits
>> as well, as long as I explain what they are.
>
> If sRGB is poking out of your cylinder, then Adobe RGB is going to poke
> out even more, and the entire human visual range is going to be much
> larger. Are you sure you've got the radius of your cylinder correct to
> match your colour calculations? Also it would be surprising to me if the
> human visual range came out exactly as a cylinder (after a brief glance
> of the maths involved), are you sure about this?
>

Yeah, I explain the mistake I made in this thread:

http://news.povray.org/583bd889%241%40news.povray.org

Mike

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