You can export to cinema to get rendered images for which the data at each pixel in the image is a floating point value not a color.
David E DeMarle Kitware, Inc. Principal Engineer 21 Corporate Drive Clifton Park, NY 12065-8662 Phone: 518-881-4909 On Thu, Apr 12, 2018 at 11:13 AM, Mathieu Westphal < mathieu.westp...@kitware.com> wrote: > Hello > > Please keep the ML in the cc so everyone can provide. > > You should be able to do that in the python shell. > > Views->Python Shell > > s = GetActiveSource() > r=Show(s) > l=r.LookupTable > l.RGBPoints > > > Best, > > Mathieu Westphal > > On Thu, Apr 12, 2018 at 3:14 PM, Andrei Cimpoeru < > andrei.cimpo...@cfms.org.uk> wrote: > >> Dear Mathieu, >> >> Please see the attached picture. I think that I can see a way to get back >> to the original data. Is there a change to access the table with the *Color >> Transfer Function Values?* >> >> Cheers, >> >> Andrei >> >> On Thu, Apr 12, 2018 at 2:10 PM, Mathieu Westphal < >> mathieu.westp...@kitware.com> wrote: >> >>> Dear Andrei >>> >>> There is no way to guess the pressure values with only the RGB data. One >>> can only guess the range and the color map used for generating the image. >>> You will need to find the original data. >>> >>> Best, >>> >>> Mathieu Westphal >>> >>> On Thu, Apr 12, 2018 at 2:59 PM, Andrei Cimpoeru < >>> andrei.cimpo...@cfms.org.uk> wrote: >>> >>>> >>>> Hi Mathieu, >>>> >>>> Thanks for getting back to me. Let's say that I have the image below >>>> (attached). If you load it in Paraview you have a vector field of PNG >>>> consisting of RGB values. How do I turn these values back to pressure. >>>> I am interested in this because I want to map the RGB colors back to >>>> pressure field. Is there any way to this using vtk-python? >>>> >>>> Cheers, >>>> >>>> Andrei >>>> >>>> >>>> >>>> On Thu, Apr 12, 2018 at 12:00 PM, Mathieu Westphal < >>>> mathieu.westp...@kitware.com> wrote: >>>> >>>>> Dear Andrei, >>>>> >>>>> I'm not sure to follow what your are trying to achieve. Please explain >>>>> again. >>>>> >>>>> In any case, the mapping between the pressure and the RGB values you >>>>> see in paraview is controlled by >>>>> the Color Map Editor and the range of the data. All these tools are >>>>> accessible in the Toolbar visible in the attached image, I've highligthed >>>>> the Color Editor button. >>>>> >>>>> Best regards, >>>>> >>>>> >>>>> Mathieu Westphal >>>>> >>>>> On Thu, Apr 12, 2018 at 12:28 PM, Andrei Cimpoeru < >>>>> andrei.cimpo...@cfms.org.uk> wrote: >>>>> >>>>>> Hi , >>>>>> >>>>>> I am currently working with Paraview and deep learning models. I >>>>>> have created a set of images (.png) using Paraview. The images are >>>>>> related >>>>>> to the pressure field around a wing. When I load images back to Paraview >>>>>> all I can visualise are the RGB values. >>>>>> *When the image are exported from Paraview the pressure field is >>>>>> transferred into RGB values. Is there a way to obtain the function that >>>>>> does that?* >>>>>> Instead of exporting to .png a data format that I like is the .vti. >>>>>> This format keep the current information about pressure, velocity, mach >>>>>> number etc. Is there something that I could export a slice to .vti? >>>>>> >>>>>> Many thanks and I am looking forward to hear from you. >>>>>> >>>>>> Cheers, >>>>>> >>>>>> Andrei >>>>>> >>>>>> >>>>>> >>>>>> -- >>>>>> *Andrei Cimpoeru* // CFD Engineer >>>>>> >>>>>> >>>>>> <https://cfms.org.uk/news-events/events/2018/july/farnborough-international-airshow-2018/> >>>>>> >>>>>> *e: *andrei.cimpo...@cfms.org.uk *t*: 0117 906 1106 *w: * >>>>>> www.cfms.org.uk >>>>>> CFMS Services Ltd // Bristol & Bath Science Park // Dirac Crescent // >>>>>> Emersons Green // Bristol // BS16 7FR >>>>>> >>>>>> CFMS Services Ltd is registered in England and Wales No 05742022 - a >>>>>> subsidiary of CFMS Ltd >>>>>> CFMS Services Ltd registered office // 43 Queens Square // Bristol >>>>>> // BS1 4QP >>>>>> >>>>>> _______________________________________________ >>>>>> Powered by www.kitware.com >>>>>> >>>>>> Visit other Kitware open-source projects at >>>>>> http://www.kitware.com/opensource/opensource.html >>>>>> >>>>>> Please keep messages on-topic and check the ParaView Wiki at: >>>>>> http://paraview.org/Wiki/ParaView >>>>>> >>>>>> Search the list archives at: http://markmail.org/search/?q=ParaView >>>>>> >>>>>> Follow this link to subscribe/unsubscribe: >>>>>> https://public.kitware.com/mailman/listinfo/paraview >>>>>> >>>>>> >>>>> >>>> >>>> >>>> -- >>>> *Andrei Cimpoeru* // CFD Engineer >>>> >>>> >>>> <https://cfms.org.uk/news-events/events/2018/july/farnborough-international-airshow-2018/> >>>> >>>> *e: *andrei.cimpo...@cfms.org.uk *t*: 0117 906 1106 *w: * >>>> www.cfms.org.uk >>>> CFMS Services Ltd // Bristol & Bath Science Park // Dirac Crescent // >>>> Emersons >>>> Green // Bristol // BS16 7FR >>>> >>>> CFMS Services Ltd is registered in England and Wales No 05742022 - a >>>> subsidiary of CFMS Ltd >>>> CFMS Services Ltd registered office // 43 Queens Square // Bristol // >>>> BS1 4QP >>>> >>> >>> >> >> >> -- >> *Andrei Cimpoeru* // CFD Engineer >> >> >> <https://cfms.org.uk/news-events/events/2018/july/farnborough-international-airshow-2018/> >> >> *e: *andrei.cimpo...@cfms.org.uk *t*: 0117 906 1106 *w: * >> www.cfms.org.uk >> CFMS Services Ltd // Bristol & Bath Science Park // Dirac Crescent // >> Emersons >> Green // Bristol // BS16 7FR >> >> CFMS Services Ltd is registered in England and Wales No 05742022 - a >> subsidiary of CFMS Ltd >> CFMS Services Ltd registered office // 43 Queens Square // Bristol // >> BS1 4QP >> > > > _______________________________________________ > Powered by www.kitware.com > > Visit other Kitware open-source projects at http://www.kitware.com/opensou > rce/opensource.html > > Please keep messages on-topic and check the ParaView Wiki at: > http://paraview.org/Wiki/ParaView > > Search the list archives at: http://markmail.org/search/?q=ParaView > > Follow this link to subscribe/unsubscribe: > https://public.kitware.com/mailman/listinfo/paraview > >
_______________________________________________ Powered by www.kitware.com Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Please keep messages on-topic and check the ParaView Wiki at: http://paraview.org/Wiki/ParaView Search the list archives at: http://markmail.org/search/?q=ParaView Follow this link to subscribe/unsubscribe: https://public.kitware.com/mailman/listinfo/paraview