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- Title
Optimal Scheme of Retinal Image Enhancement using Curvelet Transform and Quantum Genetic Algorithm.
- Authors
Zhixiao Wang; Xuebin Xu; Wenyao Yan; Wei Wei; Junhuai Li; Deyun Zhang
- Abstract
A new optimal scheme based on curvelet transform is proposed for retinal image enhancement (RIE) using real-coded quantum genetic algorithm. Curvelet transform has better performance in representing edges than classical wavelet transform for its anisotropy and directional decomposition capabilities. For more precise reconstruction and better visualization, curvelet coefficients in corresponding subbands are modified by using a nonlinear enhancement mapping function. An automatic method is presented for selecting optimal parameter settings of the nonlinear mapping function via quantum genetic search strategy. The performance measures used in this paper provide some quantitative comparison among different RIE methods. The proposed method is tested on the DRIVE and STARE retinal databases and compared with some popular image enhancement methods. The experimental results demonstrate that proposed method can provide superior enhanced retinal image in terms of several image quantitative evaluation indexes.
- Subjects
RETINAL imaging; OPTIMAL control theory; IMAGE enhancement (Imaging systems); CURVELET transforms; GENETIC algorithms
- Publication
KSII Transactions on Internet & Information Systems, 2013, Vol 7, Issue 11, p2702
- ISSN
1976-7277
- Publication type
Article
- DOI
10.3837/tiis.2013.11.009