Electronic Letters on Computer Vision and Image Analysis 7(4):51-61, 2009
Distortion Correction for 3D Scan of Trunk Swaying
Human Body Segments
∗ Academic Center for Computing and Media Studies, Kyoto University, Yoshida-Honmachi, Kyoto, Japan
+ Graduate School of Economics, Kyoto University, Yoshida-Honmachi, Kyoto, Japan
Received 9th June, 2008; accepted 11th February, 2009.
We propose a method for acquiring a 3D shape of human body segments accurately. Using a light stripe
triangulation range finder, we can acquire accurate 3D shape of a motionless object in dozens of seconds.
If the object moves during the scanning, the acquired shape would be distorted. Naturally, humans move
slightly for making balance while standing even if the subject makes an effort to stay still for avoiding the
distortion in acquired shape. Our method corrects the distortion based on measured subject’s motion during
Experimental results show the accuracy of the proposed method. Trunk swaying degrades the accuracy
of the light stripe triangulation from 1mm to 10mm. We can keep the accuracy of as good as 2mm by
applying our method.
Key Words: Anthropometry, Human Body Modeling, 3D Reconstruction, Light Stripe Triangulation, Trunk
For computer-aided design (CAD) of apparel, ergonomic and medical products, the 3D shape of each particular
human body becomes more and more useful. In fact, several commercial products [1, 2, 3] based on light stripe
triangulation rangefinders have been developed to reconstruct 3D shape of an individual.
Although the light stripe triangulation rangefinder can accurately (< 1mm) acquire the 3D shape of an object
as a dense 3D point-cloud on the surface, it takes a certain time to scan the whole object with a laser sheet.
If the object moves during the scanning, the acquired shape would be distorted and the accuracy is degraded.
Naturally, humans move slightly for making balance while standing even if the