Hi,
Madhavan wrote:
> Hi,
>
> Are Silhouette & Feature Line Extraction possible in OpenSG?
There's very little that's not possible. ;)
> Can anybody provide some tips on that?
OpenSG's Geometry is targeted at rendering with OpenGl. As such it is
pretty low-level as far as Geometry data structures go, so there are no
edges or other elements that typical geometry processing tools like
OpenMesh have.
So if you need a geometric representation of Silhouettes and feature
lines, we don't have support for that, sorry.
That said, there are ways to just render them, based on GPU tricks. I
haven't done any of that, but there have been a whole bunch of
publications. One of the older ones is Ramesh Raskar 'Image precision
silhouette edges' or his 'Hardware support for non-photorealistic
rendering'. Find them on google scholar and check out the papers that
cite them, that should give you enough information to get it going.
I don't know anybody who's done NPR with OpenSG yet, anybody?
Dirk
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