Title:
ARTICULATION POSITION ACQUISITION METHOD AND DEVICE, AND MOTION ACQUISITION METHOD AND DEVICE
Document Type and Number:
WIPO Patent Application WO/2020/054442
Kind Code:
A1
Abstract:
The present invention allows for highly precise motion capture, which can be used as a substitute for optical motion capture technology, and which obviates the need for attaching optical markers or sensors on a subject. A subject having a poly-articular structure has a plurality of physical feature points including a plurality of articulations. Distances between the feature points are obtained. From one input image or a plurality of input images captured at the same time, a spatial distribution of likelihoods of the reliability of the positions of the feature points is acquired. Using the spatial distribution of likelihoods, one or a plurality of feature point candidate positions which correspond to each of the feature points are acquired. An optimization calculation is carried out based on inverse kinematics using the feature point candidate positions and the poly-articular structure of the subject. In this way, articulation angles of the subject are acquired, and a forward kinematic calculation is carried out using the articulation angles to acquire the positions of the feature points including the articulations of the subject.
Inventors:
NAKAMURA YOSHIHIKO (JP)
TAKANO WATARU (JP)
IKEGAMI YOSUKE (JP)
OHASHI TAKUYA (JP)
YAMAMOTO KAZUKI (JP)
TAKEMOTO KENTARO (JP)
TAKANO WATARU (JP)
IKEGAMI YOSUKE (JP)
OHASHI TAKUYA (JP)
YAMAMOTO KAZUKI (JP)
TAKEMOTO KENTARO (JP)
Application Number:
PCT/JP2019/033859
Publication Date:
March 19, 2020
Filing Date:
August 29, 2019
Export Citation:
Assignee:
UNIV TOKYO (JP)
International Classes:
G06T7/60; G06T7/00
Foreign References:
| JP2007333690A | 2007-12-27 |
Other References:
YAMAMOTO, KAZUKI ET AL.,: "Video Motion Capture based on Inverse Kinematics using the High-order Information Moments", LECTURE PROCEEDINGS OF 2019 JSME ANNUAL CONFERENCE ON ROBOTICS AND MECHATRONICS, June 2018 (2018-06-01), pages 1 - 4
Attorney, Agent or Firm:
INABA, Shigeru et al. (JP)
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