Human Spine Posture Estimation from 2D Frontal and Lateral Views Using 3D Physically Accurate Spine Model

Daisuke FURUKAWA; Kensaku MORI; Takayuki KITASAKA; Yasuhito SUENAGA; Kenji MASE; Tomoichi TAKAHASHI

Human Spine Posture Estimation from 2D Frontal and Lateral Views Using 3D Physically Accurate Spine Model

Daisuke FURUKAWA, Kensaku MORI, Takayuki KITASAKA, Yasuhito SUENAGA, Kenji MASE, Tomoichi TAKAHASHI

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This paper proposes the design of a physically accurate spine model and its application to estimate three dimensional spine posture from the frontal and lateral views of a human body taken by two conventional video cameras. The accurate spine model proposed here is composed of rigid body parts approximating vertebral bodies and elastic body parts representing intervertebral disks. In the estimation process, we obtain neck and waist positions by fitting the Connected Vertebra Spheres Model to frontal and lateral silhouette images. Then the virtual forces acting on the top and the bottom vertebrae of the accurate spine model are computed based on the obtained neck and waist positions. The accurate model is deformed by the virtual forces, the gravitational force, and the forces of repulsion. The model thus deformed is regarded as the current posture. According to the preliminary experiments based on one real MR image data set of only one subject person, we confirmed that our proposed deformation method estimates the positions of the vertebrae within positional shifts of 3.2 6.8 mm. 3D posture of the spine could be estimated reasonably by applying the estimation method to actual human images taken by video cameras.

Publication: IEICE TRANSACTIONS on Information Vol.E87-D No.1 pp.146-154

Publication Date: 2004/01/01

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Type of Manuscript: Special Section PAPER (Special Section on Machine Vision Applications)

Category: ME and Human Body

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Daisuke FURUKAWA, Kensaku MORI, Takayuki KITASAKA, Yasuhito SUENAGA, Kenji MASE, Tomoichi TAKAHASHI, "Human Spine Posture Estimation from 2D Frontal and Lateral Views Using 3D Physically Accurate Spine Model" in IEICE TRANSACTIONS on Information, vol. E87-D, no. 1, pp. 146-154, January 2004, doi: .
Abstract: This paper proposes the design of a physically accurate spine model and its application to estimate three dimensional spine posture from the frontal and lateral views of a human body taken by two conventional video cameras. The accurate spine model proposed here is composed of rigid body parts approximating vertebral bodies and elastic body parts representing intervertebral disks. In the estimation process, we obtain neck and waist positions by fitting the Connected Vertebra Spheres Model to frontal and lateral silhouette images. Then the virtual forces acting on the top and the bottom vertebrae of the accurate spine model are computed based on the obtained neck and waist positions. The accurate model is deformed by the virtual forces, the gravitational force, and the forces of repulsion. The model thus deformed is regarded as the current posture. According to the preliminary experiments based on one real MR image data set of only one subject person, we confirmed that our proposed deformation method estimates the positions of the vertebrae within positional shifts of 3.2 6.8 mm. 3D posture of the spine could be estimated reasonably by applying the estimation method to actual human images taken by video cameras.
URL: https://globals.ieice.org/en_transactions/information/10.1587/e87-d_1_146/_p

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@ARTICLE{e87-d_1_146,
author={Daisuke FURUKAWA, Kensaku MORI, Takayuki KITASAKA, Yasuhito SUENAGA, Kenji MASE, Tomoichi TAKAHASHI, },
journal={IEICE TRANSACTIONS on Information},
title={Human Spine Posture Estimation from 2D Frontal and Lateral Views Using 3D Physically Accurate Spine Model},
year={2004},
volume={E87-D},
number={1},
pages={146-154},
abstract={This paper proposes the design of a physically accurate spine model and its application to estimate three dimensional spine posture from the frontal and lateral views of a human body taken by two conventional video cameras. The accurate spine model proposed here is composed of rigid body parts approximating vertebral bodies and elastic body parts representing intervertebral disks. In the estimation process, we obtain neck and waist positions by fitting the Connected Vertebra Spheres Model to frontal and lateral silhouette images. Then the virtual forces acting on the top and the bottom vertebrae of the accurate spine model are computed based on the obtained neck and waist positions. The accurate model is deformed by the virtual forces, the gravitational force, and the forces of repulsion. The model thus deformed is regarded as the current posture. According to the preliminary experiments based on one real MR image data set of only one subject person, we confirmed that our proposed deformation method estimates the positions of the vertebrae within positional shifts of 3.2 6.8 mm. 3D posture of the spine could be estimated reasonably by applying the estimation method to actual human images taken by video cameras.},
keywords={},
doi={},
ISSN={},
month={January},}

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TY - JOUR
TI - Human Spine Posture Estimation from 2D Frontal and Lateral Views Using 3D Physically Accurate Spine Model
T2 - IEICE TRANSACTIONS on Information
SP - 146
EP - 154
AU - Daisuke FURUKAWA
AU - Kensaku MORI
AU - Takayuki KITASAKA
AU - Yasuhito SUENAGA
AU - Kenji MASE
AU - Tomoichi TAKAHASHI
PY - 2004
DO -
JO - IEICE TRANSACTIONS on Information
SN -
VL - E87-D
IS - 1
JA - IEICE TRANSACTIONS on Information
Y1 - January 2004
AB - This paper proposes the design of a physically accurate spine model and its application to estimate three dimensional spine posture from the frontal and lateral views of a human body taken by two conventional video cameras. The accurate spine model proposed here is composed of rigid body parts approximating vertebral bodies and elastic body parts representing intervertebral disks. In the estimation process, we obtain neck and waist positions by fitting the Connected Vertebra Spheres Model to frontal and lateral silhouette images. Then the virtual forces acting on the top and the bottom vertebrae of the accurate spine model are computed based on the obtained neck and waist positions. The accurate model is deformed by the virtual forces, the gravitational force, and the forces of repulsion. The model thus deformed is regarded as the current posture. According to the preliminary experiments based on one real MR image data set of only one subject person, we confirmed that our proposed deformation method estimates the positions of the vertebrae within positional shifts of 3.2 6.8 mm. 3D posture of the spine could be estimated reasonably by applying the estimation method to actual human images taken by video cameras.
ER -