Paper Info
Title
Objective Evaluation of Facial Paralysis by Asymmetry in Expressions
Abstract
An objective evaluation method to analyze the degree of motion dysfunction in facial expressions due to paralysis is presented. The analysis are based on range data captured for pre-determined facial actions of patients with facial paralysis. The dysfunctions in expressions are analyzed by estimating the degree of asymmetry between left and right sides of 3D expression models that were constructed from measured range data. A symmetric generic face mesh is adapted to the range data using a least squares approximation method to generate these 3D models. The 3D expression models are interpreted as inter-connected meshes of linear springs with point masses and their deformations during expressions are determined by estimating the change of energy in each case. The results obtained for patients in consecutive measurements are compared against that of normal subjects to illustrate the degree of recovery quantitatively.
Year
DOI
Venue
2003
10.1007/978-3-540-39903-2_1
Lecture Notes in Computer Science
Keywords
Field
DocType
facial expression,least squares approximation
Least squares,Polygon mesh,Pattern recognition,Expression (mathematics),Facial expression,Artificial intelligence,Facial paralysis,Asymmetry,Paralysis,Mathematics
Conference
Volume
ISSN
Citations 
2879
0302-9743
1
PageRank 
References 
Authors
0.39
2
2
Name
Order
Citations
PageRank
Pujitha Gunaratne1172.99
Yukio Sato220.74