Apparatus, method, application program, and computer readable medium thereof capable of pre-storing data for generating self-shadow of a 3D object

A sphere tree is first generated. Accessibility values and occlusion angles corresponding to each vertex of a 3D object are calculated according to the sphere tree. A 2D texture and a 3D texture are then generated to store the accessibility values and occlusion angles. When a self-shadow effect of t...

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Bibliographic Details
Main Authors CHUANG, JUNG-HONG, CHANG, YU-JUNG, LIOU, YU-SHUO
Format Patent
LanguageChinese
English
Published 16.06.2008
Subjects
CALCULATING
COMPUTING
COUNTING
IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
PHYSICS
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Summary:A sphere tree is first generated. Accessibility values and occlusion angles corresponding to each vertex of a 3D object are calculated according to the sphere tree. A 2D texture and a 3D texture are then generated to store the accessibility values and occlusion angles. When a self-shadow effect of the 3D object is required to be generated, the relation of the spheres in the sphere tree is updated, and a 3D image is formed by retrieving the values in the 2D texture and the 3D texture according to the updated sphere tree. Since the 2D texture and the 3D texture are pre-stored, the real time calculation load is hugely reduced while the self-shadow effect is processed.
Bibliography:Application Number: TW200695146907