NDLI: A closed-form solution for human finger positioning

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A closed-form solution for human finger positioning

Content Provider	ACM Digital Library
Author	Duits, Roel van der Stappen, A. Frank Egges, Arjan
Abstract	In this paper we describe a novel technique for solving the inverse kinematics problem for human fingers. We derive a closed-form solution that places the fingertips precisely in the desired location by allowing minor deviations in the rotations of the Proximal Interphalangeal and Distal Interphalangeal joints compared to the fixed ratio that is known to exist between them. The obvious advantage is that with our approach there is no need to iterate until the distance between the fingertips and the desired locations is small enough. We show that this method is reliable and exact while showing minimal differences to the finger poses generated by the original closed-form solution. In our experiments we found the positions of the intermediate joints of the finger to deviate only around 1.5 mm in the worst case from those resulting from a numerical approximation of the original closed-form solution. On average the deviation is less than 0.5 millimeter.
Starting Page	73
Ending Page	78
Page Count	6
File Format	PDF
ISBN	9781450339919
DOI	10.1145/2822013.2822041
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2015-11-16
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Inverse kinematics Animation Human finger
Content Type	Text
Resource Type	Article

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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