Imaging the Finger Force Direction

This paper presents a method of imaging the coloration pattern in the fingernail and surrounding skin to infer fingertip force direction during planar contact. Nail images from 7 subjects were registered to reference images with RANSAC and then warped to an atlas with elastic registration. Recognition of fingertip force direction, based on linear discriminant analysis, shows that there are common color pattern features in the fingernail and surrounding skin for different subjects. Based on the common features, the overall recognition accuracy is 92%.

[1]  Thenkurussi Kesavadas,et al.  Measuring Fingertip Forces by Imaging the Fingernail , 2006, 2006 14th Symposium on Haptic Interfaces for Virtual Environment and Teleoperator Systems.

[2]  Christopher G. Harris,et al.  A Combined Corner and Edge Detector , 1988, Alvey Vision Conference.

[3]  Jerry L Prince,et al.  ondence Image Registration Based on Boundary Mapping , 2004 .

[4]  Hany Farid,et al.  Elastic registration in the presence of intensity variations , 2003, IEEE Transactions on Medical Imaging.

[5]  Jerry L. Prince,et al.  Image registration based on boundary mapping , 1996, IEEE Trans. Medical Imaging.

[6]  H. Asada,et al.  THE COMMON PATTERNS OF BLOOD PERFUSION IN THE FINGERNAIL BED SUBJECT TO FINGERTIP TOUCH FORCE AND FINGER POSTURE , 2006 .

[7]  H. Harry Asada,et al.  Measurement of finger posture and three-axis fingertip touch force using fingernail sensors , 2004, IEEE Transactions on Robotics and Automation.

[8]  Robert C. Bolles,et al.  Random sample consensus: a paradigm for model fitting with applications to image analysis and automated cartography , 1981, CACM.

[9]  Yu Sun,et al.  Dynamic features and prediction model for imaging the fingernail to measure fingertip forces , 2006, Proceedings 2006 IEEE International Conference on Robotics and Automation, 2006. ICRA 2006..

[10]  David J. Kriegman,et al.  Eigenfaces vs. Fisherfaces: Recognition Using Class Specific Linear Projection , 1996, ECCV.

[11]  Aleix M. Martínez,et al.  Selecting Principal Components in a Two-Stage LDA Algorithm , 2006, 2006 IEEE Computer Society Conference on Computer Vision and Pattern Recognition (CVPR'06).

[12]  R. Fisher.  THE STATISTICAL UTILIZATION OF MULTIPLE MEASUREMENTS , 1938 .

[13]  Aleix M. Martínez,et al.  Where are linear feature extraction methods applicable? , 2005, IEEE Transactions on Pattern Analysis and Machine Intelligence.