北京邮电大学学报

  • EI核心期刊

北京邮电大学学报 ›› 2012, Vol. 35 ›› Issue (3): 70-73.doi: 10.13190/jbupt.201203.70.mayd

• 研究报告 • 上一篇    下一篇

一种采用SCM模型的彩色图像增强方法

马义德,滕飞,绽琨,张红娟   

  1. 兰州大学 信息科学与工程学院, 兰州 730000
  • 收稿日期:2011-03-20 修回日期:2011-10-13 出版日期:2012-06-28 发布日期:2012-02-29
  • 通讯作者: 马义德 E-mail:ydma@lzu.edu.cn
  • 作者简介:马义德(1963-),男,教授,博士生导师,E-mail:ydma@lzu.edu.cn
  • 基金资助:

    国家自然科学基金项目(61175012);高等学校博士学科点专项科研基金项目(博导类:20110211110026);中央高校基本科研业务费自由探索项目(LZUJBKY-2010-220,LZUJBKY-2012-46,LZUJBKY-2012-38)

A New Method of Color Image Enhancement Using Spiking Cortical Model

MA Yi-de, TENG Fei, ZHAN Kun, ZHANG Hong-juan   

  1. School of Information Science and Engineering, Lanzhou University, Lanzhou 730000, China
  • Received:2011-03-20 Revised:2011-10-13 Online:2012-06-28 Published:2012-02-29
  • Contact: MA Yide E-mail:ydma@lzu.edu.cn

摘要:

经研究脉冲发放皮层模型(SCM)动态阈值衰减特性和神经元点火周期,发现该模型的赋时矩阵对图像灰度处理过程恰好符合韦伯费赫涅尔定律.对于较亮部分,灰度差值处理比较粗糙,而对于较暗区域,灰度差值处理更加精细.基于此,提出了一种利用SCM的彩色图像增强算法.选择符合人眼视觉特性的HSI色彩空间,保持色调不变,对饱和度分量进行幂次拉伸,对亮度分量利用SCM进行增强处理.仿真实验结果证明,该算法可行,图像增强效果明显.

关键词: 彩色图像增强, 脉冲发放皮层模型, 赋时矩阵, 人眼视觉特性

Abstract:

Dynamic threshold attenuation characteristics and firing periodicity of spiking cortical model (SCM) are analyzed. It is concluded that the negative time matrix of this model conforms to Weber-Fechner-law. It processes lighter areas coarsely and darker areas accurately. And then a new image enhancement algorithm based on SCM is presented. The hue saturation intensity (HSI) color space that satisfies with human visual system is chosen. Hue component is kept unchanged; but saturation component is changed by power stretch while luminance component is processed by SCM. Experiment shows that this algorithm is feasible, and the enhancement effect is obvious.

Key words: color image enhancement, spiking cortical model, time matrix, human visual characteristics

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