图像增强技术的研究  

Research on Image Enhancement Technology

作　　者：张娜[1] 

机构地区：[1]成都理工大学信息工程学院信号与信息处理,四川成都610059

出　　处：《计算机仿真》2007年第1期192-195,共4页Computer Simulation

摘　　要：如何有效地增强图像是图像分析中的一个难点,通常,图像的目标背景对比度低,噪声大。平滑处理后图像的边缘轮廓更加模糊不清。常用的拉普拉斯锐化方法在突出图像边缘的同时,也提升了平滑图像中的残留噪声。针对这种问题,提出了用直方图规定化方法增强平滑后的图像,该方法克服了拉普拉斯锐化的缺点,且明显地增强了图像的细节部分。理论分析和仿真结果均表明,该算法能够提高图像成分的清晰度,提供更准确、更满意的图像。How to improve image is always a difficult problem. Generally, the target background of image has some characteristics, such as the low target- to -background contrast, great noise and so on . The outline of edge becomes more and more blurry after image smoothing. Actually, the method of laplacian sharpening can enhance the image edge as well as improve the residual noise in the smoothed image. As the result of the problem, the method of using histogram regulation is proposed to strengthen the smoothed picture, which overcomes the shortcoming of laplaelan sharpening and is good at enhancing the edge details of image. Both the theory analysis and the experimental resuits show that the method can improve the definition of image and make more accurate and satisfactory image.

关 键 词：图像增强 托普拉斯锐化 直方图规定化 对比度 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]