A novel optic disc detection scheme on retinal images
| Autor: | Chen-Chung Liu, Chun-Yuan Yu, Shyr-Shen Yu, H. K. Hsiao, Shiau-Wei Kuo |
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| Rok vydání: | 2012 |
| Předmět: |
Scheme (programming language)
Retina Computer science business.industry Feature vector General Engineering Retinal Contour segmentation Computer Science Applications chemistry.chemical_compound medicine.anatomical_structure chemistry Artificial Intelligence Feature (computer vision) medicine Computer vision Artificial intelligence business computer computer.programming_language Optic disc |
| Zdroj: | Expert Systems with Applications. 39:10600-10606 |
| ISSN: | 0957-4174 |
| DOI: | 10.1016/j.eswa.2012.02.157 |
| Popis: | Robust and effective optic disc detection is a necessary processing component in automatic retinal screening systems. In this paper, optic disc localization is achieved by a novel illumination correction operation, and contour segmentation is completed by a supervised gradient vector flow snake (SGVF snake) model. Conventional GVF snake is not sufficient to segment contour due to vessel occlusion and fuzzy disc boundaries. In view of this reason, the SGVF snake is extended in each time of deformation iteration, so that the contour points can be classified and updated according to their corresponding feature information. The classification relies on the feature vector extraction and the statistical information generated from training images. This approach is evaluated by means of two publicly available databases, Digital Retinal Images for Vessel Extraction (DRIVE) database and Structured Analysis of the Retina (STARE) database, of color retinal images. The experimental results show that the overall performance is with 95% correct optic disc localization from the two databases and 91% disc boundaries are correctly segmented by the SGVF snake algorithm. |
| Databáze: | OpenAIRE |
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