Thanks Peter!
Ron Ganbar
email: ron...@gmail.com
tel: +44 (0)7968 007 309 [UK]
+972 (0)54 255 9765 [Israel]
url: http://ronganbar.wordpress.com/
On Mon, Mar 20, 2017 at 6:23 PM, Peter McAuley <pet...@borisfx.com> wrote:
> https://betterexplained.com/articles/an-interactive-guide-
> to-the-fourier-transform/
>
> On 20 March 2017 at 14:17, Ron Ganbar <ron...@gmail.com> wrote:
>
>> He's a question:
>> Can somebody properly explain FFT?
>> (I'm feeling so inadequate right now. Am I the only one left who doesn't
>> know what this magical acronym is?)
>>
>>
>>
>>
>>
>> Ron Ganbar
>> email: ron...@gmail.com
>> tel: +44 (0)7968 007 309 <+44%207968%20007309> [UK]
>> +972 (0)54 255 9765 <+972%2054-255-9765> [Israel]
>> url: http://ronganbar.wordpress.com/
>>
>> On Mon, Mar 20, 2017 at 3:42 PM, Magno Borgo <li...@borgo.tv> wrote:
>>
>>> A non-nuke alternative would be to pre-render the FFT using a python
>>> package like scipy or similar, which already have fast FFT implementations,
>>> then load/read it inside NUKE. That might help on some pipelines, though
>>> the inverse edited FFT would still be needed to handled inside Nuke to be
>>> practical.
>>>
>>>
>>>
>>>
>>>
>>> On Mon, 20 Mar 2017 11:09:30 -0400, jon parker <parker....@gmail.com>
>>> wrote:
>>>
>>> Thanks for the responses! I'm not a full-time comper so am unaware of
>>>> some of the tricks out there, like using ZDefocus. And I should have
>>>> added that large kernels / images are involved so the standard
>>>> convolve node falls behind at the resolution we are working with.
>>>>
>>>> Magno, I wasn't aware of your blinkscript. If I have some time I'll
>>>> peek at the code.
>>>>
>>>> Someone should put together a commercial implementation for Nuke some
>>>> day, sounds like there is demand out there for it.
>>>>
>>>> -Jon
>>>>
>>>> On Mon, Mar 20, 2017 at 7:18 AM, Magno Borgo <li...@borgo.tv> wrote:
>>>>
>>>>> I coded a naive Blinkscript DCT (and inverse) implementation a while
>>>>> back,
>>>>> you can check the code and use as a start for a better implementation.
>>>>>
>>>>> http://www.nukepedia.com/blink/other/dct-discrete-cosine-transform
>>>>>
>>>>> Magno.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> On Mon, 20 Mar 2017 03:39:40 -0400, Mads Lund <madshl...@gmail.com>
>>>>> wrote:
>>>>>
>>>>> we did some CPU vs FFT tests aswell, but I can't remember the exact
>>>>> kernel
>>>>> size where FFT started to be more efficient, but it was rather low. On
>>>>> the
>>>>> flip side Convolve on the GPU seem to have some memory problems and (at
>>>>> least for us) cause some random out of memory issues, even on beefy
>>>>> cards.
>>>>>
>>>>> We found that using gaming techniques: up-scaling low frequency areas
>>>>> (then
>>>>> convolving) and only full convolving of high frequency areas to be to
>>>>> be
>>>>> quite efficient for the vast majority of our renders where the plate is
>>>>> gigantic or a large kernel size is needed.
>>>>> The result is perceptually indistinguishable.
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> man. 20. mar. 2017 kl. 06.14 skrev Deke Kincaid <dekekinc...@gmail.com
>>>>> >:
>>>>>
>>>>>>
>>>>>> The convolve node was fixed up quite a while a go(4-5 years ago, it is
>>>>>> what the zdefocus is based on). In our tests though we still find
>>>>>> the FFT
>>>>>> nodes faster on the farm vs convolve in CPU mode. If you have a gpu
>>>>>> farm
>>>>>> then convolve is faster.
>>>>>>
>>>>>>
>>>>>> On Sun, Mar 19, 2017 at 6:23 PM Michael Habenicht <m...@tinitron.de>
>>>>>> wrote:
>>>>>>
>>>>>>>
>>>>>>> The latest version of the convolve node has gpu support.
>>>>>>>
>>>>>>> Am 20.03.2017 um 01:20 schrieb jon parker:
>>>>>>> > Greetings Nuke users,
>>>>>>> >
>>>>>>> > I'm just wondering if there are any faster, more robust FFT tools
>>>>>>> > available for Nuke besides the (hidden) built-in nodes?
>>>>>>> >
>>>>>>> > The built-ins do the job, but they are pretty slow and definitely
>>>>>>> > prone to crashing fairly often.
>>>>>>> >
>>>>>>> > Or, alternatively, something that does fast image convolution, some
>>>>>>> > other way, under the hood could work too.
>>>>>>> >
>>>>>>> > Cheers,
>>>>>>> > Jon
>>>>>>> > _______________________________________________
>>>>>>> > Nuke-users mailing list
>>>>>>> > Nuke-users@support.thefoundry.co.uk,
>>>>>>> http://forums.thefoundry.co.uk/
>>>>>>> > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuk
>>>>>>> e-users
>>>>>>> >
>>>>>>> _______________________________________________
>>>>>>> Nuke-users mailing list
>>>>>>> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
>>>>>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>>>>>>>
>>>>>>
>>>>>> _______________________________________________
>>>>>> Nuke-users mailing list
>>>>>> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
>>>>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>>>>>>
>>>>>
>>>>> --
>>>>> Best regards. Mads Hagbarth Lund
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> --
>>>>> Using Opera's mail client: http://www.opera.com/mail/
>>>>>
>>>>> _______________________________________________
>>>>> Nuke-users mailing list
>>>>> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
>>>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>>>>>
>>>> _______________________________________________
>>>> Nuke-users mailing list
>>>> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
>>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>>>>
>>>
>>>
>>> --
>>> Using Opera's mail client: http://www.opera.com/mail/
>>> _______________________________________________
>>> Nuke-users mailing list
>>> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>>>
>>
>>
>> _______________________________________________
>> Nuke-users mailing list
>> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>>
>
>
> _______________________________________________
> Nuke-users mailing list
> Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
>
_______________________________________________
Nuke-users mailing list
Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/
http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
