贾伟振,何秋生,卢冉,梁慧慧

• 1:太原科技大学电子信息工程学院

摘要(Abstract)：

针对现有图像增强算法容易造成颜色失真、局部信息变少和对比度降低的问题,研究了一种基于灰度调节和改进的Gamma校正直方图重构的图像增强算法。首先,在对数域下利用图像当前值、平均值和最大值的关系,乘以比例调节系数得到图像的灰度调节系数,在实数域下对图像进行自适应灰度调节,得到预增强图像;然后,使用单通道直方图所有峰值的均值作为裁剪峰值,采用Gamma函数为累积分布函数的校正函数,对图像单通道直方图进行直方图重构,得到增强的单通道图像;最后,利用预增强图像三通道灰度值比例关系获得剩余两个通道的灰度值,合并三通道得到增强图像。实验表明,研究的方法能够有效改善图像视觉质量,细节清晰,对比度好。

关键词(KeyWords)： 自适应灰度调节;Gamma校正;单通道直方图;直方图重构

Abstract:

Keywords:

基金项目(Foundation): 先进控制与智能信息系统山西省重点实验室(201805D111001);; 山西省自动化工程技术研究中心(201805D121020-13)

作者(Author): 贾伟振,何秋生,卢冉,梁慧慧

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