[1]江兴方,等.用最大熵方法改善图像质量[J].常州大学学报(自然科学版),2005,(01):44-47.
　JIANG Xing -fang,TAO Chun -kan,et al.Improving the Quality of Image Using the Maximum Entropy Method[J].Journal of Changzhou University(Natural Science Edition),2005,(01):44-47.
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用最大熵方法改善图像质量()
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常州大学学报(自然科学版)[ISSN:2095-0411/CN:32-1822/N]

卷:
期数:
2005年01期
页码:
44-47
栏目:
出版日期:
2005-02-25

文章信息/Info

Title:
Improving the Quality of Image Using the Maximum Entropy Method
作者:
江兴方1 ;  2 ;  陶纯堪2 ;  是度芳1
1.江苏工业学院信息科学系, 江苏 常州 213016;2.南京理工大学电光学院, 南京210094
Author(s):
JIANG Xing -fang1 ;  2 ;  TAO Chun -kan2 ;  SHI Du -fang1
1 .Department of Information Science , Jiangsu Polytechnic University , Changzhou 213016 , China ;2 . School of Electronic Engineering &Optoelectronic Technology , N US T , Nanjing 210093 , China
关键词:
熵; 最大熵; 直方图均衡化; MAT LAB
Keywords:
entropy ; the max imum entropy method ; histogram equalization ; Mat lab
分类号:
O 436
文献标志码:
A
摘要:
从玻耳兹曼熵的定义出发, 得出信息熵的表达式, 用拉格朗日乘子法得到最大熵的解, 提出由最大熵方法分析直方图均 衡化的原理, 并对一幅卫星云图进行直方图均衡化处理。将图像中所有像素尽可能均衡地分布在不同的灰度级上, 获得最大 熵。直方图均衡化后的图像对比度由42 提高到73 , 改善了图像质量。进而分析直方图均衡化对非云笼罩区过黑的原因。
Abstract:
From the en tropy definition of Boltzmann , the expression of information ent ropy and the solution of the maximum ent ropy by Lag range′s method of multipliers are got .The principle of histogram equalization is analy zed by the maximum entropy method .A satellite cloud image is handled using the histogram equalizat ion method and its contract degree is raised from 42 to 73 .All pixels of the image are distributed uniformly in the g ray levels .The quality of the image is improved visibly .This paper also analyzes the cause that the brightness in the area of unw rapped with cloudland is over black .

参考文献/References:

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备注/Memo

备注/Memo:
作者简介:江兴方(1963 -), 男, 江苏 常州 人, 副教授, 主要从事光学工程、物理教学与多媒体教学软件开发。
更新日期/Last Update: 2005-03-25