title: No-reference hair occlusion assessment for dermoscopy images based on distribution feature.
abstract: The presence of hair is a common quality problem for dermoscopy images, which may influence the accuracy of lesion analysis. In this paper, a novel no-reference hair occlusion assessment method is proposed according to the distribution feature of hairs in the dermoscopy image. Firstly, the image is adaptively enhanced by simple linear iterative clustering (SLIC) combined with isotropic nonlinear filtering (INF). Then, hairs are extracted from the image by an automatic threshold and meanwhile the postprocessing is used to refine the hair through re-extracting omissive hairs and filtering false hairs. Finally, the degree of hair occlusion is evaluated by an objective metric based on the hair distribution. A series of experiments was carried out on both simulated images and real images. The result shows that the proposed local adaptive hair detection method can work well on both sparse hair and dense hair, and the designed metric can effectively evaluate the degree of hair occlusion.
authors.affiliation: Image Processing Center, School of Astronautics, BeiHang University, Beijing 100191, China. Electronic address: xfy_73@buaa.edu.cn.
authors.forename: Fengying
authors.initials: F
authors.lastname: Xie
authors.affiliation: Image Processing Center, School of Astronautics, BeiHang University, Beijing 100191, China. Electronic address: oskorlee@gmail.com.
authors.forename: Yang
authors.initials: Y
authors.lastname: Li
authors.affiliation: General Hospital of the Air Force, PLA, Beijing 100036, China. Electronic address: mrs5822@163.com.
authors.forename: Rusong
authors.initials: R
authors.lastname: Meng
authors.affiliation: Image Processing Center, School of Astronautics, BeiHang University, Beijing 100191, China. Electronic address: jiangzg@buaa.edu.cn.
authors.forename: Zhiguo
authors.initials: Z
authors.lastname: Jiang
mesh_terms: D000465:Algorithms; D046169:Dermoscopy / Q000379:methods*; D006197:Hair / Q000502:physiology*; D006801:Humans; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D012867:Skin / Q000473:pathology*; D012871:Skin Diseases / Q000473:pathology
keywords: Dermoscopy image; Hair detection; Hair occlusion; Image quality; No-reference assessment