Enhancing Remote Sensing Image by the Contourlet Transform

CHEN Zhi-Gang

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Enhancing Remote Sensing Image by the Contourlet Transform

Article | 更新时间：2020-08-13

- Enhancing Remote Sensing Image by the Contourlet Transform
- Optics and Precision Engineering Vol. 16, Issue 10, Pages: 2030-2037(2008)
- 作者机构：
  
  长春理工大学
- 作者简介：
- 基金信息：
- DOI：
  CLC： TN911.73
- Received：21 May 2008，
  
  Revised：25 July 2008，
  
  Published Online：25 October 2008，
  
  Published：25 October 2008
- 稿件说明：
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陈志刚. 基于Contourlet变换遥感图像增强[J]. 光学精密工程, 2008,16(10):2030-2037

CHEN Zhi-Gang. Enhancing Remote Sensing Image by the Contourlet Transform[J]. Optics and precision engineering, 2008, 16(10): 2030-2037.
陈志刚. 基于Contourlet变换遥感图像增强[J]. 光学精密工程, 2008,16(10):2030-2037 DOI：

CHEN Zhi-Gang. Enhancing Remote Sensing Image by the Contourlet Transform[J]. Optics and precision engineering, 2008, 16(10): 2030-2037. DOI：

摘要

提出一种基于Contourlet变换的空间域增强和变换域增强相结合的遥感图像增强算法。首先对原图像进行拉普拉斯塔式变换（LP）得到原图像的细节图像并将它和原图像线性相加实现空间域增强；然后对空间域增强后的图像进行Contourlet变换得到不同尺度和不同方向上的变换系数，构造非线性增强函数对变换系数做增强处理实现变换域增强；最后对增强处理后的变换系数进行Contourlet反变换，实现最终的图像增强。试验结果表明：与应用于遥感图像传统增强算法相比，此算法可以得到更好的增强效果。

Abstract

An algorithm for remote sensing image enhancement in space domain and transform domain based on the contourlet transform is proposed. Firstly

linear addition of original image and its details obtained by the Laplacian Pyramid transform is used for enhancing image in space domain. Then

the coefficients in different scales and different directions are obtained by the contourlet transform and a nonlinear function is introduced to modify the coefficients for enhancing image in transform domain. Finally

the image enhancement is implemented by reconstructing these coefficients. The experimental results show that this algorithm can get better effect for remote sensing image enhancement by comparing with other algorithms.

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Related Institution

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