Questions tagged [silhouette]
7 questions
6
votes
1 answer
Silhouette curve for isometric surface of revolution
I am trying to figure out how to convert a flat representation of a curve into the silhouette of a surface of revolution in a isometric projection. In essence in want the planar cut of the surface edge to be converted to the silhouette.
Image 1:…
joojaa
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5
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1 answer
How to find silhouette for concaver
Given a point light source, a eye position, we can find the silhouette (outline) of the given model. We can first find the silhouette edge, project the model into a 2-D plane, then traverse all silhouette edges. But when it comes to concave model,…
zfb
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4
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How fast should I expect to render the silhouette of a 20k triangle model?
Using VTK 7.0 I have found that rendering a 20k triangle STL model takes approximately 17ms on my Nvidia GTX970. However, I am only interested in the silhouette of this model (like the image below) and was wondering if: a) such speeds are reasonable…
Tetao879
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Silhouette edge detection alternatives to Sobel
I'm trying to implement a silhouette detection algorithm in post-processing. I've come across solutions based on Sobel/Roberts cross/... filters and I was wondering if there are more accurate techniques to perform the task.
With silhouette edge I…
leone ruggiero
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1
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1 answer
Edge-aware spatial denoising (Ambient Occlusion)
Reading through the source code of the XeGTAO project I found this function while looking for the denoise filter:
lpfloat4 XeGTAO_CalculateEdges( const lpfloat centerZ, const lpfloat leftZ, const lpfloat rightZ, const lpfloat topZ, const lpfloat…
leone ruggiero
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1
vote
2 answers
Rasterization: How does hardware disambiguate identical Z values at silhouette edges?
I have written a software rasterizer, and have encountered a (literal) edge case.
At the silhouette edge of a typical object, you have two triangles—the front face and the back face. They are not coplanar, but they of course share that single edge.…
imallett
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Silhouette below 3D model
There are some 3D applications which can cast shadow or silhouette below 3D models. They render pretty fast and smooth. I wonder what kind of technology is the standard procedure to get 3D model shadow/silhouette.
For example is there any C++…
user3405291
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