Cool. Makes sense. I set that up today. Thanks for the gizmo/python! It works great.
-Dan On Jan 22, 2013, at 6:51 PM, Alex - <[email protected]> wrote: > Ahh right, so /tmp/rvLookLutTMP.csp is where I'm temporarily writing out the > 3D only .csp before I read it back in and add the 1D shaper lut at the head, > which then gets written out to your specified location.. It doesn't need to > get included as its created mid way through the script (although you could > point it to a different location if you wanted to some some reason). > > The prelut uses the Nuke standard log2lin: > (pow(10,(1023*x-685)/300)-.0108)/(1-.0108) > But you can swap that out for whatever you want by changing the expression on > the master channel in "1D Prelut" section of the tool. (or paste an existing > curve in there). > > If you have an existing Lut you want to rebake just pop a Vectorfield or > OCIOFileTransform node inside the group where the Grade and Saturation nodes > are (after the switch, before the dot) > > -Alex > > > > > On Wed, Jan 23, 2013 at 8:47 AM, Dan Rosen <[email protected]> wrote: >> Hi Alex, >> >> I've got your tool working, though I have some questions. Is it possible to >> set this up to feed it a log LUT as 3DL or other for the main lut part? I >> don't see where I can do that in your current Group/Grizmo. It appears that >> the tool is looking at "/tmp/rvLookLutTMP.csp" (lines 17 to the end), but >> that file isn't included in your dropbox. I have pasted my own 3DL into the >> main part of a test file and that works fine, but it'd be cool to get the >> tool to do that. >> >> On a different, but somewhat related note, I always see a slight bump in >> brightness in comparing a 3DL lut applied to a log image versus a CSP lut >> applied to a linear image. I assume that the "shaper 1D" LUT is close, but >> an approximation. I do have the correct equation for our Lin2Log, so maybe >> some of the difference is coming from remapping the Log2Lin as a 1D lut. >> Would that make the difference? >> >> thx, >> Dan >> >> On Tue, Jan 15, 2013 at 7:02 PM, Alex - <[email protected]> wrote: >>> Hmm.. >>> >>> Try this version: >>> https://www.dropbox.com/s/u3ykx7b8b92k50e/cinespaceLutGen_v002.nk >>> >>> Basically the same, but strips a few Linux specific font references. >>> Working fine here on a stock instance of 6.3v8 under Linux. >>> >>> Will try it on a Mac at home later. >>> >>> Alex Fry >>> >>> >>> On Wed, Jan 16, 2013 at 12:47 PM, Dan Rosen <[email protected]> wrote: >>>> Hey Alex, >>>> >>>> Thanks. This looks promising. I'm getting some errors when I cut and paste >>>> it into Nuke 6.3v8 on OSX 10.6.8. >>>> >>>> Disk cache /var/tmp/nuke-u1055/??: 482MB (1% of 51200MB) used in 59 files. >>>> [16:55.39] ERROR: ColorLookup1.lut: >>>> [16:55.39] ERROR: ColorLookup1.lut: recursive expression in >>>> (1/0.18)*(pow(10,(1023*x-444)/(1/(.002/0.45)))-0.0106332657)/(1-0.0106332657) >>>> Traceback (most recent call last): >>>> File >>>> "/Applications/Nuke6.3v8/Nuke6.3v8.app/Contents/MacOS/plugins/nuke/callbacks.py", >>>> line 161, in autolabel >>>> s = f[0](*f[1],**f[2]) >>>> File >>>> "/Applications/Nuke6.3v8/Nuke6.3v8.app/Contents/MacOS/plugins/autolabel.py", >>>> line 26, in autolabel >>>> ind = >>>> nuke.expression("(keys?1:0)+(has_expression?2:0)+(clones?8:0)+(viewsplit?32:0)") >>>> ValueError: cannot convert to a floating point value >>>> [17:39.35] ERROR: CineSpace3D_LutGenerator.lutRed: cannot convert to a >>>> floating point value >>>> [17:39.35] ERROR: CineSpace3D_LutGenerator.lutGreen: cannot convert to a >>>> floating point value >>>> [17:39.35] ERROR: CineSpace3D_LutGenerator.lutBlue: cannot convert to a >>>> floating point value >>>> [17:39.35] ERROR: CineSpace3D_LutGenerator.lutDestination: cannot convert >>>> to a floating point value >>>> Traceback (most recent call last): >>>> File >>>> "/Applications/Nuke6.3v8/Nuke6.3v8.app/Contents/MacOS/plugins/nuke/callbacks.py", >>>> line 161, in autolabel >>>> s = f[0](*f[1],**f[2]) >>>> File >>>> "/Applications/Nuke6.3v8/Nuke6.3v8.app/Contents/MacOS/plugins/autolabel.py", >>>> line 26, in autolabel >>>> ind = >>>> nuke.expression("(keys?1:0)+(has_expression?2:0)+(clones?8:0)+(viewsplit?32:0)") >>>> ValueError: cannot convert to a floating point value >>>> [17:39.35] ERROR: VIEWER_INPUT.Switch_inputCspace1.which: cannot convert >>>> to a floating point value >>>> [17:39.35] ERROR: VIEWER_INPUT.Switch_aspectToggle.which: cannot convert >>>> to a floating point value >>>> [17:39.35] ERROR: VIEWER_INPUT.Aspect_1v4_GROUP.Switch1.which: cannot >>>> convert to a floating point value >>>> [17:39.35] ERROR: VIEWER_INPUT.Aspect_1v4_GROUP.Mask1.box: cannot convert >>>> to a floating point value >>>> [17:39.35] ERROR: VIEWER_INPUT.Aspect_1v4_GROUP.Mask1.reformat: cannot >>>> convert to a floating point value >>>> [17:39.35] ERROR: VIEWER_INPUT.Switch_bPointToggle.which: cannot convert >>>> to a floating point value >>>> [17:39.35] ERROR: VIEWER_INPUT.Switch_blurToggle.which: cannot convert to >>>> a floating point value >>>> [17:39.35] ERROR: VIEWER_INPUT.Switch_satToggle.which: cannot convert to a >>>> floating point value >>>> [17:39.35] ERROR: VIEWER_INPUT.FilterErode2.size: cannot convert to a >>>> floating point value >>>> [17:39.35] ERROR: VIEWER_INPUT.Add2.value: cannot convert to a floating >>>> point value >>>> [17:39.35] ERROR: VIEWER_INPUT.Switch_inputCspace.which: cannot convert to >>>> a floating point value >>>> Traceback (most recent call last): >>>> File >>>> "/Applications/Nuke6.3v8/Nuke6.3v8.app/Contents/MacOS/plugins/nuke/callbacks.py", >>>> line 161, in autolabel >>>> s = f[0](*f[1],**f[2]) >>>> File >>>> "/Applications/Nuke6.3v8/Nuke6.3v8.app/Contents/MacOS/plugins/autolabel.py", >>>> line 26, in autolabel >>>> ind = >>>> nuke.expression("(keys?1:0)+(has_expression?2:0)+(clones?8:0)+(viewsplit?32:0)") >>>> ValueError: cannot convert to a floating point value >>>> [17:40.56] ERROR: CineSpace1D_LutGenerator.lutRed: cannot convert to a >>>> floating point value >>>> [17:40.56] ERROR: CineSpace1D_LutGenerator.lutGreen: cannot convert to a >>>> floating point value >>>> [17:40.56] ERROR: CineSpace1D_LutGenerator.lutBlue: cannot convert to a >>>> floating point value >>>> Traceback (most recent call last): >>>> File >>>> "/Applications/Nuke6.3v8/Nuke6.3v8.app/Contents/MacOS/plugins/nuke/callbacks.py", >>>> line 161, in autolabel >>>> s = f[0](*f[1],**f[2]) >>>> File >>>> "/Applications/Nuke6.3v8/Nuke6.3v8.app/Contents/MacOS/plugins/autolabel.py", >>>> line 26, in autolabel >>>> ind = >>>> nuke.expression("(keys?1:0)+(has_expression?2:0)+(clones?8:0)+(viewsplit?32:0)") >>>> ValueError: cannot convert to a floating point value >>>> >>>> >>>> On Tue, Jan 15, 2013 at 4:00 PM, Alex - <[email protected]> wrote: >>>>> I ran into the same problem, so I made these: >>>>> https://www.dropbox.com/s/ykzzlc6sm9hi7ji/cinespaceLutGen_v001.nk >>>>> >>>>> there are two nodes, one for making pure 1D .csp luts, another for making >>>>> 3D luts with a 1D prelut. >>>>> There are some basic grade controls on the face of the 3D lut generator, >>>>> but you can open it up and put whatever random transforms you want in >>>>> there. >>>>> >>>>> -Alex >>>>> >>>>> >>>>> On Wed, Jan 16, 2013 at 7:25 AM, Dan Rosen <[email protected]> >>>>> wrote: >>>>>> Hello, >>>>>> >>>>>> I am trying to use GenerateLUT to author csp files for linear light >>>>>> images to display conversion. We also have a custom LogLin so I'd like >>>>>> to set the shaper lut to something custom with a file or values there. >>>>>> I'm not sure if the Nuke node requires that I have a config.ocio file or >>>>>> not, but I cannot seem to figure it out. I've looked in the docs and >>>>>> don't see it there either. Any help is much appreciated. >>>>>> >>>>>> Thanks, >>>>>> Dan >>>>>> >>>>>> _______________________________________________ >>>>>> Nuke-users mailing list >>>>>> [email protected], http://forums.thefoundry.co.uk/ >>>>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>>>> >>>>> >>>>> _______________________________________________ >>>>> Nuke-users mailing list >>>>> [email protected], http://forums.thefoundry.co.uk/ >>>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>>> >>>> >>>> _______________________________________________ >>>> Nuke-users mailing list >>>> [email protected], http://forums.thefoundry.co.uk/ >>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>> >>> >>> _______________________________________________ >>> Nuke-users mailing list >>> [email protected], http://forums.thefoundry.co.uk/ >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> >> >> _______________________________________________ >> Nuke-users mailing list >> [email protected], http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
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