Finger Force Direction Recognition by Principal Component Analysis of Fingernail Coloration Pattern

A method based on Principal Component Analysis of the fingernail coloration pattern is presented to infer fingertip force direction during planar contact. Images from 7 subjects were registered and normalized to each other. Results show that the fingernail coloration patterns are similar for the 7 subjects, but the feature centroids vary. It is concluded that there are common features for all people. But accurate detection of fingertip force direction requires individually calibrated centroids.

• Type: Conference
• Year: 2007
• Where: HAPTICS
• Authors: Yu Sun, John M. Hollerbach, Stephen A. Mascaro
• Keywords: HAPTICS 2007, Principal Component Analysis, Virtual Reality, fingernail Coloration Patterns, fingertip Force Direction