Re: Deep object ID and lack of Z
Richard Hadsell <[email protected]>
| Newsgroups | gmane.comp.video.openexr.devel |
|---|---|
| Message-ID | <[email protected]> |
On 11/12/2014 04:14 PM, Larry Gritz wrote: > The OpenEXR tech documents make it fairly clear that deep OpenEXR files must contain a "Z" channel in the base layer. > > Some people have talked about OpenEXR deep files as a container for object IDs (stored as int32) that allows for a differing number of object ID values per pixel. Ideally, there would be only one channel, "id", of type int32. There is no need for (or meaning of) depth for this use case, but technically this would not be a valid OpenEXR file. > > Thoughts? Is anybody else in favor of relaxing the hard requirement for Z channels, at least for the special case of other channels containing only integer values? > > > -- > Larry Gritz > [email protected] I agree. Supporting channels with varying numbers of samples per pixel should not be limited to data that depend on depth, even if the feature is named "deep data". I am sure that users will find other uses for the feature, and I am surprised that Z seems to be a requirement. -- Dick Hadsell 203-992-6320 Fax: 203-992-6001 Reply-to: [email protected] Blue Sky Studioshttp://www.blueskystudios.com 1 American Lane, Greenwich, CT 06831-2560