基于场景复杂度计算的红外图像平台直方图均衡

张云峰

doi:10.3788/YJYXS20163107.0695

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基于场景复杂度计算的红外图像平台直方图均衡

显示与图像 | 更新时间：2020-07-07

- 基于场景复杂度计算的红外图像平台直方图均衡
- Adaptive plateau histogram equalization for infrared image based on scene complexity computation
- 液晶与显示 2016年31卷第7期页码：695-702
- 作者机构：
  
  中国科学院长春光学精密机械与物理研究所, 吉林长春 130033
- 作者简介：
  
  张云峰(1970-),男,研究员,主要从事实时图像处理的研究。E-mail:zyfciomp@126.com
- 基金信息：
  
  国家自然科学基金(No.61205143);吉林省科技厅重点项目(No.20110329);Supported by National Nataral Scierce Foundation of China(No.61205143);Science and Technology Department of Jilin Province Research Funding(No.20110329)
- DOI：10.3788/YJYXS20163107.0695
  中图分类号： TP139
- 收稿日期：2015-08-13，
  
  录用日期：2015-11-16，
  
  纸质出版日期：2016-07
- 稿件说明：
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张云峰. 基于场景复杂度计算的红外图像平台直方图均衡[J]. 液晶与显示, 2016,31(7):695-702.

Yun-feng ZHANG. Adaptive plateau histogram equalization for infrared image based on scene complexity computation[J]. Chinese journal of liquid crystals and displays, 2016, 31(7): 695-702.
张云峰. 基于场景复杂度计算的红外图像平台直方图均衡[J]. 液晶与显示, 2016,31(7):695-702. DOI： 10.3788/YJYXS20163107.0695.

Yun-feng ZHANG. Adaptive plateau histogram equalization for infrared image based on scene complexity computation[J]. Chinese journal of liquid crystals and displays, 2016, 31(7): 695-702. DOI： 10.3788/YJYXS20163107.0695.

摘要

直方图均衡类算法由于缺乏限制项，增强后的红外图像易出现灰度级合并和过增强，视觉效果不佳。为解决上述问题，提出基于场景复杂度限制型的平台直方图均衡算法。该算法首先提出对图像场景复杂度进行估计，并将Harris角点数量作为图像复杂度评价依据。然后建立类似sigmoid函数的图像复杂度评价函数，将场景复杂度标准化。最后综合考虑图像复杂度和防止原图均值漂移，依据平台直方图均衡原理获取全局变换函数，重建红外图像。实验结果表明：该方法可有效地依据不同场景实现红外图像增强，不出现过增强和噪声放大。客观评价指标表明，该方法在保持图像均值亮度和图像信息熵方面表现优异。

Abstract

Histogram equalization and its improved version may cause tinny gray levels coalition and over-enhancement in the output infrared image without any constraints. In order to solve this problem

we propose plateau histogram equalization based on scene complexity computation. Firstly

Harris algorithm is used to detect corner. Then an evaluation function

which is similar to the sigmoid function

is established to calculate the degree of complexity for an image. Finally

a global transformation function is gained using the theory of plateau histogram equalization. Moreover

the global transformation function achieves enhancement with the constraints of image complexity and mean lighting protecting. Experimental results show that the proposed method can enhance infrared images with different scenes effectively and there exist no over-enhancement and noise amplification in the output infrared images. Objective evaluation illustrates that the proposed method can achieve less mean lighting shift and holding the entropy of original image.

关键词

Keywords

references

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