Kin Chuen Hui

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Among the various techniques for displaying solid objects, ray tracing is the most popular method for sweep-generated objects, owing to its simplicity and effectiveness. The main problem in ray tracing is to find the point of intersection between the ray and the object. By taking consideration of the special features of a surface generated by sweep, the(More)
This paper reports on the development of a system for manipulating a virtually elastic object by integrating various techniques. A sensor glove is used for interacting with the virtual object, and a virtual hand is used for visualizing the interaction between the hand and the object. Motion of the virtual hand is controlled with the sensor glove. By using a(More)
We provide a reformulation of the constraint hierarchies (CHs) framework based on the notion of error indicators. Adapting the generalized view of local consistency in semiring-based constraint satisfaction problems (SCSPs), we define constraint hierarchy k-consistency (CH-k-C) and give a CH-2-C enforcement algorithm. We demonstrate how the CH-2-C algorithm(More)