tailieunhanh - Báo cáo hóa học: " Research Article Biomedical Image Sequence Analysis with Application to Automatic Quantitative Assessment of Facial Paralysis"

Tham khảo luận văn - đề án 'báo cáo hóa học: " research article biomedical image sequence analysis with application to automatic quantitative assessment of facial paralysis"', luận văn - báo cáo phục vụ nhu cầu học tập, nghiên cứu và làm việc hiệu quả | Hindawi Publishing Corporation EURASIP Journal on Image and Video Processing Volume 2007 Article ID 81282 11 pages doi 2007 81282 Research Article Biomedical Image Sequence Analysis with Application to Automatic Quantitative Assessment of Facial Paralysis Shu He 1 John J. Soraghan 1 and Brian F. O Reilly2 1 Department of Electronic and Electrical Engineering University of Strathclyde Royal College Building Glasgow G1 1XW UK 2 Institute of Neurological Sciences Southern General Hospital 1345 Govan Road Glasgow G51 4TF UK Received 26 February 2007 Revised 20 August 2007 Accepted 16 October 2007 Recommended by . Thiran Facial paralysis is a condition causing decreased movement on one side ofthe face. A quantitative objective and reliable assessment system would be an invaluable tool for clinicians treating patients with this condition. This paper presents an approach based on the automatic analysis of patient video data. Facial feature localization and facial movement detection methods are discussed. An algorithm is presented to process the optical flow data to obtain the motion features in the relevant facial regions. Three classification methods are applied to provide quantitative evaluations of regional facial nerve function and the overall facial nerve function based on the House-Brackmann scale. Experiments show the radial basis function RBF neural network to have superior performance. Copyright 2007 Shu He et al. This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use distribution and reproduction in any medium provided the original work is properly cited. 1. INTRODUCTION Facial paralysis is a condition where damage to the facial nerve causes weakness of the muscles on one side of the face resulting in an inability to close the eye and dropping of the angle of the mouth. The commonest cause of facial palsy is a presumed herpes simplex viral infection commonly referred to as Bell s palsy