Real‐Time GPU Silhouette Refinement using Adaptively Blended Bézier Patches

Dyken, Christopher; Reimers, Martin; Seland, Johan Simon

doi:10.1111/j.1467-8659.2007.01030.x

Cited by 20 publications

(17 citation statements)

References 14 publications

(22 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The set of triangles is denoted, T 1 …T N . The set of vertices is v 1 … v n in R 3 , and normal vectors are given by triangles: n t is the normal of a triangle Tt = [v i ; v j ; v k ], using the notation by [12]. This triangle normal is defined as the normalization of the vector (v j -v i ) × (v k -v i ).…”

Section: B Geometry Shadermentioning

confidence: 99%

See 1 more Smart Citation

Shadow Volume in real-time rendering

Zerari

Babahenini

2011

2011 International Conference on Communications, Computing and Control Applications (CCCA)

View full text Add to dashboard Cite

This paper presents an implementation of the algorithm of shadow volume, with an acceleration allowing a rendering in real-time. This technique is based on [1], which makes it possible to obtain shadow in real-time, where the computation of the silhouette requires the evaluation of the geometry by the CPU. By the use of the last version of the GPU, we propose to improve the computing times by using the geometry shaders so that the calculation of the silhouette is carried out by a GPU program. We present the step which allows us to lead to a concrete implementation of this algorithm, the modifications which were made, as well as a comparative study of results, followed by a discussion.

show abstract

Section: B Geometry Shadermentioning

confidence: 99%

“…There was several research works to find an effective manner of detection the silhouette in real-time [8], [9], [10], [11], [12], although the majority of the algorithms require a pre-process of the geometry or multiple rendering passes [13]. In the preceding cases there is no support geometry underlying the silhouette.…”

Section: The Silhouettementioning

confidence: 99%

Shadow Volume in real-time rendering

Zerari

Babahenini

2011

2011 International Conference on Communications, Computing and Control Applications (CCCA)

View full text Add to dashboard Cite

show abstract

“…The idea of a "visually smooth" geometric upsampling may be applied everywhere on the input mesh, or only on specific locations such as silhouettes. For instance, Dyken et al [Dyken et al 2008] use PN Triangles on silhouettes only.…”

Section: Previous Workmentioning

confidence: 99%

Phong Tessellation

Boubekeur

Alexa

2008

ACM Trans. Graph.

View full text Add to dashboard Cite

Modern 3D engines used in real-time applications provide shading that hides the lack of higher order continuity inside the shapes using modulated normals, textures, and tone-mapping -artifacts remain only on interior contours and silhouettes if the surface geometry is not smooth. The basic idea in this paper is to apply a purely local refinement strategy that inflates the geometry enough to avoid these artifacts. Our technique is a geometric version of Phong normal interpolation, not applied on normals but on the vertex positions. We call this strategy Phong Tessellation.

show abstract

“…Furthermore, the two recent works [15,16] propose, respectively, a new application of PN triangles and add some improvements to the original construction. In particular, in the former, the key idea is to assign to each mesh vertex a set of three scalar tags that act as shape controllers, improving the surface geometry and shading.…”

Section: Pn Trianglesmentioning

confidence: 99%

A comparison of local parametric C0 Bézier interpolants for triangular meshes

Boschiroli¹,

Fünfzig

Romani

et al. 2011

Computers & Graphics

View full text Add to dashboard Cite

Parametric curved shape surface schemes interpolating vertices and normals of a given triangular mesh with arbitrary topology are widely used in computer graphics for gaming and real-time rendering due to their ability to effectively represent any surface of arbitrary genus. In this context, continuous curved shape surface schemes using only the information related to the triangle corresponding to the patch under construction, emerged as attractive solutions responding to the requirements of resource-limited hardware environments. In this paper we provide a unifying comparison of the local parametric C 0 curved shape schemes we are aware of, based on a reformulation of their original constructions in terms of polynomial Bézier triangles. With this reformulation we find a geometric interpretation of all the schemes that allows us to analyse their strengths and shortcomings from a geometrical point of view. Further, we compare the four schemes with respect to their computational costs, their reproduction capabilities of analytic surfaces and their response to different surface interrogation methods on arbitrary triangle meshes with a low triangle count that actually occur in their real-world use.

show abstract

Real‐Time GPU Silhouette Refinement using Adaptively Blended Bézier Patches

Cited by 20 publications

References 14 publications

Shadow Volume in real-time rendering

Shadow Volume in real-time rendering

Phong Tessellation

A comparison of local parametric C0 Bézier interpolants for triangular meshes

Contact Info

Product

Resources

About