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Jiacheng Xu 0004

dblp:188/6025-4 · DBLP profile ↗
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1ranked-venue papers
0as first author
1since 2021 · last 2023
0009-0008-2855-7405ORCID · verified

Domains — the database's venue-derived domains; a paper can count in several

Graphics, computer vision, multimedia, augmented reality and games · 1 · 1 since 2021

Expertise — from the expertise taxonomy: the topics of the expert's papers under the CCF categories. A weight counts papers with recency: 1 for a paper about the topic, 0.3 when the topic is its context, halved every five years.

Computer graphics and multimedia
1 paper
Geometric modeling and processing · 100%

Topics — the 3 heaviest of 3, each with the papers that count most for it

TopicWeightPapersLastEvidence papers
Geometric modeling and processing › computational geometry
geometric queries
0.712023
P2M: A Fast Solver for Querying Distance from Point to Mesh Surface · ACM Trans. Graph. 2023
Geometric modeling and processing › spatial data structures
k-d tree
0.712023
P2M: A Fast Solver for Querying Distance from Point to Mesh Surface · ACM Trans. Graph. 2023
Geometric modeling and processing
spatial data structures
0.712023
P2M: A Fast Solver for Querying Distance from Point to Mesh Surface · ACM Trans. Graph. 2023

Methods — techniques the papers use, named apart from their topics

interception inspection · 0.7flooding algorithm · 0.7
YearPublicationVenuePosition
2023 P2M: A Fast Solver for Querying Distance from Point to Mesh Surface
abstract
Most of the existing point-to-mesh distance query solvers, such as Proximity Query Package (PQP), Embree and Fast Closest Point Query (FCPW), are based on bounding volume hierarchy (BVH). The hierarchical organizational structure enables one to eliminate the vast majority of triangles that do not help find the closest point. In this paper, we develop a totally different algorithmic paradigm, named P2M , to speed up point-to-mesh distance queries. Our original intention is to precompute a KD tree (KDT) of mesh vertices to approximately encode the geometry of a mesh surface containing vertices, edges and faces. However, it is very likely that the closest primitive to the query point is an edge e (resp., a face f ), but the KDT reports a mesh vertex υ instead. We call υ an interceptor of e (resp., f ). The main contribution of this paper is to invent a simple yet effective interception inspection rule and an efficient flooding interception inspection algorithm for quickly finding out all the interception pairs. Once the KDT and the interception table are precomputed, the query stage proceeds by first searching the KDT and then looking up the interception table to retrieve the closest geometric primitive. Statistics show that our query algorithm runs many times faster than the state-of-the-art solvers.
Chen Zong, Jiacheng Xu 0004, Jiantao Song, Shuang-Min Chen, Shi-Qing Xin, Wenping Wang 0001, Changhe Tu
ACM Trans. Graph.2