Relational Description to Parametric Evolution of Mudras

2009-01-2276

06/09/2009

Event
Digital Human Modeling for Design and Engineering Conference and Exhibition
Authors Abstract
Content
The objective of this work is to use the relational configuration schema to describe hand postures and to simulate the posture-evolution. First, a general scheme of vocabulary for describing relational configurations is developed. Translating the conventional way of describing relationships using this scheme it is found that it is possible to evolve a structured way of picking description elements from the vocabulary which is amenable to computer implementation. This is demonstrated through a contact based description of hand posture and determination of the respective hand configuration through an optimization based inverse kinematics formulation. In the second part, grasp-evolution is simulated. A linear interpolation and Bezier interpolation between two specified Mudras or hand postures have been studied. Intermediate Mudras necessary for specification of the control polygon of the Bezier is obtained from traversal of the Mudra hierarchy studied earlier. It is found that, when a comparison is made with human performance of postural transitions, similarity of the computed transitions depend upon the number of intermediate Mudras; when this number is not large, Bezier interpolation scheme provides reasonably natural transition.
Meta TagsDetails
DOI
https://doi.org/10.4271/2009-01-2276
Pages
12
Citation
Vipin, J., and Sen, D., "Relational Description to Parametric Evolution of Mudras," SAE Technical Paper 2009-01-2276, 2009, https://doi.org/10.4271/2009-01-2276.
Additional Details
Publisher
Published
Jun 9, 2009
Product Code
2009-01-2276
Content Type
Technical Paper
Language
English