title: Optimum wavelet based masking for the contrast enhancement of medical images using enhanced cuckoo search algorithm.
abstract: Unsharp masking techniques are a prominent approach in contrast enhancement. Generalized masking formulation has static scale value selection, which limits the gain of contrast. In this paper, we propose an Optimum Wavelet Based Masking (OWBM) using Enhanced Cuckoo Search Algorithm (ECSA) for the contrast improvement of medical images. The ECSA can automatically adjust the ratio of nest rebuilding, using genetic operators such as adaptive crossover and mutation. First, the proposed contrast enhancement approach is validated quantitatively using Brain Web and MIAS database images. Later, the conventional nest rebuilding of cuckoo search optimization is modified using Adaptive Rebuilding of Worst Nests (ARWN). Experimental results are analyzed using various performance matrices, and our OWBM shows improved results as compared with other reported literature.
authors.affiliation: Department of Electronics and Communication Engineering, Karunya University, Coimbatore 641114, India. Electronic address: ebydaniel89@gmail.com.
authors.forename: Ebenezer
authors.initials: E
authors.lastname: Daniel
authors.affiliation: Department of Electronics and Communication Engineering, Karunya University, Coimbatore 641114, India. Electronic address: anithaj@karunya.edu.
authors.forename: J
authors.initials: J
authors.lastname: Anitha
mesh_terms: D000465:Algorithms; D001921:Brain / Q000000981:diagnostic imaging*; D016208:Databases, Factual; D005260:Female; D006801:Humans; D007089:Image Enhancement / Q000379:methods*; D008279:Magnetic Resonance Imaging; D008297:Male; D058067:Wavelet Analysis
keywords: Contrast enhancement; Cuckoo search algorithm; Genetic algorithm; Medical imaging; Unsharp masking; Wavelet transforms