View Full Version : using Object ID's
July 10th, 2006, 02:25 PM
I am new DF ( although not totally new to comping ) but I was wondering if anyone knew of a good tutorial or info in regards to object id passes.
I am currently freelancing using 3ds max and vray and I would like to access the object ID's of some objects in DF. From what I can guess I think you use a Channel B tool but I have no idea how to set it up or if thats the right tool to use.
Any help would be appriciated.
July 10th, 2006, 03:43 PM
with max it should be possible to render rla/rpf files which can have build in object/material id channel
an other way is do render a seperate pass on which each object has a different color (flat shaded, only color no shadow or highlight). set the channelboolean tool to 'use FG hue' on the object ids channel. but this is only useable when you got not to many objects, because with many objects you got many different colors and the hue values coming to close and you aint able to separate them
any other suggestion from you guys?
July 10th, 2006, 07:46 PM
I am fimiliar with the 1st idea you had...3ds max object ID. Thats what I have and rendered out as RLA files.
My question is how do access the id's from the rla files. IE just grab the ground plane object id and change the color from gray to white....my objects are setup with id's in max.
I could also render out a id pass from vray, I think.
July 10th, 2006, 08:02 PM
Rla files i think dont hold object id information
RPF file do, however you'll need combustion to read these properly,
unless, DF reads in RPF files.
July 10th, 2006, 08:25 PM
Common Controls Tab
The Common Controls Tab is labelled with a radioactive symbol and can be found on virtually every tool found in Fusion. The common controls are generally found even on third-party plugin tools. This tab collects together controls that would normally have appeared on every tool.
Some 3D software can render to file formats that support additional channels. Notably, the RLA and RPF file formats support object and material ID channels, which can be used as a mask for the effect. This checkbox determines whether the channels will be used if present. The specific material ID or object ID affected is chosen using the next set of controls.
Fusion supports a wide range of file formats for both loading and saving images. Images can easily be converted from one format to another or to several formats simultaneously.
New formats are being added all of the time. If there is a specific file format that is not supported, contact eyeon Software technical support to request it.
Accom / Abekas Images.YUV
Amiga Interchange File Format.IFF, .ILBM, .ILM, .LBM
Audio Video Interleave.AVI
Cineon Film Image.CIN
Digital Picture Exchange.DPX
Digital Video Movie (Truevision).DVM
DirectShow Formats.MPEG, .ASF, .AVI, .MPE, .MPG
dpsReality, dpsQuattrus (Leitch/DPS).DPS
Maya Images (Alias) .IFF
Flexible Precision Image Format.FLX
Flexible Image Transport System.FITS
Graphic Interchange Format (QuickTime req'd).GIF
High Dynamic Range Images.HDR, HDRI
Hollywood (Leitch / DPS).HVD
Image File List.IFL
Joint Pictures Export Group.JPG, .JPEG
Open Media Format (AVID).OMF
Perception, Perception RT (Leitch/DPS).PVD, .PST
Photoshop Image (Adobe).PSD
PIC Images (Softimage).PIC, Zpic
PIX Images (Alias).PIX
Portable Network Graphics (QuickTime 3 req'd)
QuickTime Movie (QuickTime 3 req'd).MOV
QuickDraw PICT (QuickTime 3 req'd).PCT
Rich Pixel Format (Discreet).RPF, .RLA
Silicon Graphics Inc..SGI, .RGB, .RGBA, .BW, .S16
Sun Raster Files.RAS
Targa Image File.TGA
Tagged Image File.TIF, .TIFF, .TIF16
Video Toaster (NewTek) .RVD
July 10th, 2006, 08:29 PM
Thanks for all your thoughts.
I actually think I have found a way of making it work. Using a color corrector I can grab the object ID. Thats really all I need to do is tweek the colors of certain things.
I will play around with it later tonight when I am rendering.
July 10th, 2006, 08:31 PM
Just put rpf in help file search :D
July 11th, 2006, 09:23 AM
Ok sorry to keep this up but this is bugging me:bomb:
If I render a rla straight from max and bring it into DF and apply a cc to it, I can grab the ID's no problem:D
If I take the same render and save the vray frame buffer into DF and apply a cc to it, it doesnt find the ID' spirate:
If I take the vray buffer into combustion it will sort of work. It will find IDs but not correctly....parts of ids overlap, not usable, but the point is it finds IDs.
I have tried this with 16 and 32 bit rla and still come up with the same result.
My back up is to just do it all in combustion, but I would like to figure it out in DF.
Thanks again for the time and effort.