Spatial filtering using the active-space indexing method

Sudhanshu K. Semwal, Jun Ohya

Research output: Contribution to journalArticle

Abstract

Traditionally most camera-based position estimation systems use only a few points to calibrate cameras. In this paper, we investigate a novel and alternate approach for 3D position estimation by using a larger number of points arranged in a 3D grid. We present an implementation of the active-space indexing mechanism which uses three cameras. Given the corresponding points in camera images, a precise estimation of the position can be obtained. The active-space indexing method can be also used as a spatial filter to eliminate the large number of possible corresponding pairs from consideration. This capability, unique only to the active-space indexing method, provides a tractable algorithm to the otherwise intractable situation.

Original languageEnglish
Pages (from-to)135-150
Number of pages16
JournalGraphical Models
Volume63
Issue number3
DOIs
Publication statusPublished - 2001 May
Externally publishedYes

Fingerprint

Spatial Filtering
Indexing
Camera
Cameras
Alternate
Eliminate
Filter
Grid

Keywords

  • 3D position estimation
  • 3D spatial data structure
  • Camera calibration for multiple camera images
  • Computer vision techniques for 3D model building
  • Geometric algorithms
  • Virtual environments

ASJC Scopus subject areas

  • Computer Graphics and Computer-Aided Design
  • Geometry and Topology
  • Modelling and Simulation

Cite this

Spatial filtering using the active-space indexing method. / Semwal, Sudhanshu K.; Ohya, Jun.

In: Graphical Models, Vol. 63, No. 3, 05.2001, p. 135-150.

Research output: Contribution to journalArticle

Semwal, Sudhanshu K. ; Ohya, Jun. / Spatial filtering using the active-space indexing method. In: Graphical Models. 2001 ; Vol. 63, No. 3. pp. 135-150.
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