The study of precision measurement of pelvis spatial structure

Xiang Ma; Jianfei Ouyang; Xinghua Qu

doi:10.1117/12.849800

14 April 2010 The study of precision measurement of pelvis spatial structure

Xiang Ma, Jianfei Ouyang, Xinghua Qu

Proceedings Volume 7522, Fourth International Conference on Experimental Mechanics; 75226F (2010) https://doi.org/10.1117/12.849800
Event: Fourth International Conference on Experimental Mechanics, 2009, Singapore, Singapore

Abstract

Osteometry is fundamental for anthropometry. It provides the key technology and value to the study of palaeoanthropology, medicine, and criminal investigation. The traditional osteometry that has been widely accepted and used since 18th century has no longer met the information demand for modern research and application. It is significant and necessary to create an advanced 3-dimensional osteometry technique for anthropometry. This paper presents a new quick and accurate method to measure human pelvis through mathematical modeling. The pelvis is a complex combination of bones, which consists of three connected parts: hipbones, sacrum, and coccyx. There are over 40 items to be measured for the 1-dimension characteristics. In this paper, a combined measuring technology is developed for pelvis measurement. It uses machine vision systems and a portable measuring arm to obtain key geometry parameters of the pelvis. The mathematics models of the pelvis spatial structure and its parts are created through the process of data collecting, digging, assembling, and modeling. The experiment shows that the proposed technology can meet traditional osteometry and obtain entire 1D geometric parameters of the pelvis, such as maximum breadth and height, diameter of obstetric conjugata, inclination angle, and sakralneigungswinkel, etc. at the same time after modeling. Besides making the measurements above, the proposed technology can measure the geometry characteristics of pelvis and its parts, such as volume, surface area, curvature, and spatial structure, which are almost impossible for traditional technology. The overall measuring error is less than 0.1mm.

Citation Download Citation

Xiang Ma, Jianfei Ouyang, and Xinghua Qu "The study of precision measurement of pelvis spatial structure", Proc. SPIE 7522, Fourth International Conference on Experimental Mechanics, 75226F (14 April 2010); https://doi.org/10.1117/12.849800

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