激光杂志
激光雜誌
격광잡지
LASER JOURNAL
2015年
1期
57-61,65
,共6页
高斯变邻域%差分进化%灰度图像增强
高斯變鄰域%差分進化%灰度圖像增彊
고사변린역%차분진화%회도도상증강
Gauss variable neighborhood%differential evolution%gray image enhancement
灰度图像增强问题可以转化为一个目标优化问题,但是该目标函数实质是一个多峰值的优化问题,对此提出一种高斯变邻域差分进化算法用于灰度图像的增强。首先,利用高斯变异方式具有快速收敛特性以及变邻域方式在种群多样性保持方面的优势,对差分进化算法的变异进行改进,目的是平衡算法在快速收敛和保持种群多样性方面的能力,提高算法的整体效能。然后利用该算法对灰度图像增强问题进行研究,通过与基于标准DE,PSO及均衡直方图灰度图像增强效果进行对比,高斯变邻域差分灰度图像增强算法能够更有效的对灰度图像进行增强。
灰度圖像增彊問題可以轉化為一箇目標優化問題,但是該目標函數實質是一箇多峰值的優化問題,對此提齣一種高斯變鄰域差分進化算法用于灰度圖像的增彊。首先,利用高斯變異方式具有快速收斂特性以及變鄰域方式在種群多樣性保持方麵的優勢,對差分進化算法的變異進行改進,目的是平衡算法在快速收斂和保持種群多樣性方麵的能力,提高算法的整體效能。然後利用該算法對灰度圖像增彊問題進行研究,通過與基于標準DE,PSO及均衡直方圖灰度圖像增彊效果進行對比,高斯變鄰域差分灰度圖像增彊算法能夠更有效的對灰度圖像進行增彊。
회도도상증강문제가이전화위일개목표우화문제,단시해목표함수실질시일개다봉치적우화문제,대차제출일충고사변린역차분진화산법용우회도도상적증강。수선,이용고사변이방식구유쾌속수렴특성이급변린역방식재충군다양성보지방면적우세,대차분진화산법적변이진행개진,목적시평형산법재쾌속수렴화보지충군다양성방면적능력,제고산법적정체효능。연후이용해산법대회도도상증강문제진행연구,통과여기우표준DE,PSO급균형직방도회도도상증강효과진행대비,고사변린역차분회도도상증강산법능구경유효적대회도도상진행증강。
The gray level image enhancement problem can be formulated to a optimization problem, the objective function is an optimization problem of multi peak, so, differential evolution algorithm based on the gauss and variable neighborhood mutation is used to enhance the image. Firstly, with the properties of the Gauss mutation fast conver-gence and variable neighborhood maintaining the advantages in the diversity of the population, the mutation of differen-tial evolution algorithm was improved, the objective is to balance algorithm in fast convergence and the ability to keep the population diversity, improve the overall efficiency of the algorithm. Then the algorithm of gray image enhancement problem is studied, and based on the standard DE, PSO and histogram equalization image enhancement effect was compared, the result shows that gauss variable neighborhood difference gray image enhancement algorithm can be more effective to enhance the gray image.
