title: Iris-based medical analysis by geometric deformation features.
abstract: Iris analysis studies the relationship between human health and changes in the anatomy of the iris. Apart from the fact that iris recognition focuses on modeling the overall structure of the iris, iris diagnosis emphasizes the detecting and analyzing of local variations in the characteristics of irises. This paper focuses on studying the geometrical structure changes in irises that are caused by gastrointestinal diseases, and on measuring the observable deformations in the geometrical structures of irises that are related to roundness, diameter and other geometric forms of the pupil and the collarette. Pupil and collarette based features are defined and extracted. A series of experiments are implemented on our experimental pathological iris database, including manual clustering of both normal and pathological iris images, manual classification by non-specialists, manual classification by individuals with a medical background, classification ability verification for the proposed features, and disease recognition by applying the proposed features. The results prove the effectiveness and clinical diagnostic significance of the proposed features and a reliable recognition performance for automatic disease diagnosis. Our research results offer a novel systematic perspective for iridology studies and promote the progress of both theoretical and practical work in iris diagnosis.
authors.forename: Lin
authors.initials: L
authors.lastname: Ma
authors.forename: D
authors.initials: D
authors.lastname: Zhang
authors.forename: Naimin
authors.initials: N
authors.lastname: Li
authors.forename: Yan
authors.initials: Y
authors.lastname: Cai
authors.forename: Wangmeng
authors.initials: W
authors.lastname: Zuo
authors.forename: Kuanguan
authors.initials: K
authors.lastname: Wang
mesh_terms: D016000:Cluster Analysis; D016208:Databases, Factual; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D007498:Iris / Q000033:anatomy & histology* / Q000473:pathology*; D016014:Linear Models; D008297:Male; D010363:Pattern Recognition, Automated / Q000379:methods*; D013272:Stomach Diseases / Q000473:pathology; D060388:Support Vector Machine