Browsing by Author "CHUANG, JH"

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A NEW SPACE SUBDIVISION FOR RAY-TRACING CSC SOLIDS
(1995-11-01)
CHUANG, JH
;
HWANG, WJ
;
資訊工程學系
;
Department of Computer Science
COMPUTING CAUSTIC EFFECTS BY BACKWARD BEAM TRACING
(1995)
CHUANG, JH
;
CHENG, SA
;
交大名義發表
;
資訊工程學系
;
National Chiao Tung University
Caustic effects produced by the transport of light from specular surfaces to diffuse surfaces are a common type of optical effect that cannot be modeled by ray tracing. We propose a two-pass algorithm to model caustic effects efficiently and reliably. In the proposed method, information on transmitted light beams is collected in a tree structure, which is used to compute the intensity efficiently. The method does not require the polygonization of diffuse surfaces and can easily be combined with any rendering algorithm.
CURVATURE COMPUTATIONS ON SURFACES IN N-SPACE
(1992)
CHUANG, JH
;
HOFFMANN, CM
;
資訊工程學系
;
Department of Computer Science
Let F be a two-dimensional manifold in n-dimensional space, and let pi(F) be its projection into the subspace of three of the variables in which F has been expressed. We give an algorithm that computes the normal curvature of pi(F) directly from the equations of F without variable elimination. We also comment on applications in CAGD.
Potential-based modeling of two dimensional workspace using several source distributions
(1994)
CHUANG, JH
;
資訊工程學系
;
Department of Computer Science