[Bf-cycles] GSoC - Spectral Rendering

[David]

Hi,

this is by far the best visual explanation of what separates spectral
rendering from normal RGB rendering that I have seen:

http://www.luxrender.net/wiki/LuxRender_Textures_Spectrum#Gaussian_spectrum

All lamps in this image would be the same RGB color, and produce the
same result with non-spectral rendering.

till then, David.


On Apr 9, 2013, at 11:16 PM, Gavin Howard wrote:

>     Dalai,
>     The real advantage of spectral rendering is that the light coming
> of two different objects interact more realistically. This tends to
> show best when dealing with organic materials. For example, say a
> person is holding an orange. Both the skin and the orange have some
> amount of scattering, and that scattering interacts better spectrally
> than in RGB. Some other things that often show advantages with
> spectral rendering are fluorescent lights.
>     Plus, use it right, and it looks pretty good. :)
>     God Bless,
>     Gavin Howard
> 
> 
> On Tue, Apr 9, 2013 at 3:06 PM, Dalai Felinto <dfelinto at gmail.com> wrote:
>> 
>> Hi Gavin,
>> 
>> What are the advantages of using wave-length?
>> I know PBRT is based in wave-length, thus Cycles must have some of it
>> in its internals. But I wonder what is the impact for the final user
>> in such feature.
>> 
>> One thing I know is that you can have infra-red cameras with the
>> proper BRDF materials
>> (a college of mine was working on that last-year for a school
>> assignment on top of PBRT)
>> But that sounds too much like a corner case ;)
>> 
>> Cheers,
>> Dalai
>> --
>> blendernetwork.org/member/dalai-felinto
>> www.dalaifelinto.com
>> 
>> 
>> 2013/4/9 Gavin Howard <gavin.d.howard at gmail.com>:
>>> Sounds good.
>>> Gavin H.
>>> 
>>> 
>>> On Tue, Apr 9, 2013 at 2:41 PM, Brecht Van Lommel
>>> <brechtvanlommel at pandora.be> wrote:
>>>> 
>>>> If you have ideas I can give broad advice about what I think is
>>>> feasible to do in the time frame. But reviewing the proposal before
>>>> submission wouldn't be fair to other students, the other mentors
>>>> should be able to evaluate proposals written by the student alone, to
>>>> get a sense of the understanding and planning ability of the student.
>>>> 
>>>> There will also be enough time to make adjustments after the proposal
>>>> is submitted, mentors will comment if they think the project is too
>>>> big/small.
>>>> 
>>>> Brecht.
>>>> 
>>>> On Tue, Apr 9, 2013 at 10:17 PM, Gavin Howard <gavin.d.howard at gmail.com>
>>>> wrote:
>>>>>     Brecht,
>>>>>     Would you mind helping me write a proposal? (By help, I mean review
>>>>> it
>>>>> when I'm done and suggest changes.) That way, I could make sure that the
>>>>> project is not too large in scope. Thanks.
>>>>>     God Bless,
>>>>>     Gavin Howard
>>>>> 
>>>>> 
>>>>> On Tue, Apr 9, 2013 at 2:14 PM, Brecht Van Lommel
>>>>> <brechtvanlommel at pandora.be> wrote:
>>>>>> 
>>>>>> Hi,
>>>>>> 
>>>>>> I think this could be great as a summer of code project. I guess the
>>>>>> essential part would be support for spectral colors in the path
>>>>>> tracing integrator, and then you could add extras like a temperature
>>>>>> to color node and dispersion support for one or more of the BSDF nodes
>>>>>> depending how much time there is.
>>>>>> 
>>>>>> Brecht.
>>>>>> 
>>>>>> On Tue, Apr 9, 2013 at 8:21 PM, Gavin Howard <gavin.d.howard at gmail.com>
>>>>>> wrote:
>>>>>>>     Hello all,
>>>>>>>     I was excited yesterday when the Blender Foundation was accepted
>>>>>>> into
>>>>>>> Google Summer of Code again. I've been wanting to do spectral
>>>>>>> rendering
>>>>>>> in
>>>>>>> Cycles for awhile now, and I would like your input on whether you
>>>>>>> think
>>>>>>> it
>>>>>>> would be a good project or not. Thanks!
>>>>>>>     God Bless,
>>>>>>>     Gavin Howard
>>>>>>> 
>>>>>>> _______________________________________________
>>>>>>> Bf-cycles mailing list
>>>>>>> Bf-cycles at blender.org
>>>>>>> http://lists.blender.org/mailman/listinfo/bf-cycles
>>>>>>> 
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>>>>> 
>>>>> 
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