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Investigation of Remote Sensing Image Fusion Strategy Applying PCA to Wavelet Packet Analysis Based on IHS Transform

  • Xiaoliang ZhuEmail author
  • Wenxing Bao
Research Article
  • 14 Downloads

Abstract

Further exploration of wavelet packet analysis (WPA) in the area of image fusion has been a hot topic. It is a strategy to combine WPA with such other transforms as intensity–hue–saturation (IHS), principle component analysis (PCA) for image fusion between the panchromatic (PAN) and the multispectral (MS) image. The paper puts forward a distinct fusion method. Its main idea can be stated as three steps. Firstly, intensity component is derived from IHS model of the image after an MS image is transformed from RGB to IHS. Secondly, intensity component and a matched PAN image are decomposed by WPA at the second scale, respectively. The innovational concept with two aspects is applying PCA theory to merge wavelet packet coefficients. One is to detect edge and produce self-adaptive weighted ratios for low-frequency band. The other is to yield another weighted coefficients for high-frequency bands based on standard deviation. Lastly, the new intensity component created by implementing inverse WPA, matching with hue and saturation reserved, makes up a color composition. A fused image is produced when carrying out transformation from IHS to RGB for the composition. It turns out that the presented fusion strategy is effective with experiments.

Keywords

Image fusion Intensity–hue–saturation (IHS) Wavelet packet analysis (WPA) Principle component analysis (PCA) PCA-based fusion rule 

Notes

Acknowledgements

This work is supported by National Natural Science Foundation (61461003).

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Copyright information

© Indian Society of Remote Sensing 2019

Authors and Affiliations

  1. 1.School of Mathematics and StatisticsNingxia UniversityYinchuanPeople’s Republic of China
  2. 2.School of Computer Science and EngineeringNorth Minzu UniversityYinchuanPeople’s Republic of China

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