Hierarchical element decomposition of an articulated object based on its motion and shape and its application to measuring human body motion
✍ Scribed by Kengo Koara; Atsushi Nishikawa; Fumio Miyazaki
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 212 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0882-1666
- DOI
- 10.1002/scj.1150
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
Decomposing an articulated object into its constituent elements is one of the basic techniques of image recognition and its applications to structural analyses or motion measurements of human and animal bodies are being studied. In this paper, a method of decomposing an object into elements based on its motion and shape while taking account of the distribution of high‐curvature points of the contour of the object is proposed for motion image sequences of objects, including objects considered to have two‐dimensionally moving, branchless, invariable link‐length elements and long multilink structures. Since the processing is based on the shape information obtained from all of the motion image sequences by this method, an object can be divided into regions in terms of the characteristic parts of the motion, even when the contour shape for each frame may be distorted by the effects of noise and the like, and therefore the method is very effective for preliminary processing or model building in measuring a body motion. In order to show the efficacy and an applicable example of the proposed method, the kip motion, which is a bar exercise, is measured. © 2002 Wiley Periodicals, Inc. Syst Comp Jpn, 33(8): 98–110, 2002; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/scj.1150