Spatial Filtering Using the Active-Space Indexing Method

✍ Scribed by Sudhanshu K Semwal; Jun Ohya

• Publisher: Elsevier Science
• Year: 2001
• Tongue: English
• Weight: 482 KB
• Volume: 63
• Category: Article
• ISSN: 1524-0703
• DOI: 10.1006/gmod.2001.0540

✦ Synopsis

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.