title: Down syndrome diagnosis based on Gabor Wavelet Transform.
abstract: Down syndrome is a chromosomal condition caused by the presence of all or part of an extra 21st chromosome. It has different facial symptoms. These symptoms contain distinctive information for face recognition. In this study, a novel method is developed to distinguish Down Syndrome in a custom face database. Gabor Wavelet Transform (GWT) is used as a feature extraction method. Dimension reduction is performed with Principal Component Analysis (PCA). New dimension which has most valuable information is derived with Linear Discriminant Analysis (LDA). Classification process is implemented with k-nearest neighbor (kNN) and Support Vector Machine (SVM) methods. The classification accuracy is carried out 96% and 97,34% with kNN and SVM methods, respectively. Different from the studies related with the Down Sydrome, feature selection process is applied before PCA according to the correlation between components of feature vectors. Best results are achieved with euclidean distance metric for kNN and linear kernel type for SVM. In this way, we developed an efficient system to recognize Down syndrome.
authors: Department of Electronics Engineering, Turkish Military Academy, Ankara, Turkey. safaksaray@hotmail.com
authors: Safak
authors: S
authors: Saraydemir
authors: Necmi
authors: N
authors: Taşpınar
authors: Osman
authors: O
authors: Eroğul
authors: Hülya
authors: H
authors: Kayserili
authors: Nuriye
authors: N
authors: Dinçkan
mesh_terms: D004314:Down Syndrome / Q000145:classification / Q000175:diagnosis*; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D010363:Pattern Recognition, Automated; D025341:Principal Component Analysis; D060388:Support Vector Machine; D058067:Wavelet Analysis