Image and Signal Processing Methods

Multispectral image fusion based on joint sparse subspace recovery

[+] Author Affiliations
Bin Liao, Wenzhao Liu, Jing Shen

North China Electric Power University, School of Electrical and Electronic Engineering, Beijing 100226, China

J. Appl. Remote Sens. 9(1), 095068 (Aug 11, 2015). doi:10.1117/1.JRS.9.095068
History: Received April 4, 2015; Accepted July 17, 2015
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Abstract.  The aim of multimodal image fusion is to enhance the perception of a scene by combining prominent features of images captured by different sensors. Using joint sparse subspace recovery (JSSR), this paper proposes an image fusion method. We consider each source image as projecting the original scene into a specified low-dimensional subspace that can be learned by the orthogonal matching pursuit (OMP) algorithm. We then reconstruct the fused image from a union of these subspaces. Considering the high computational complexity of the OMP algorithm, we provide an optimized OMP implementation for a large set of signals on the same dictionary. We evaluate the proposed JSSR fusion method on different spectral images, and compare its performance with the other state-of-the-art methods in terms of visual effect and quantitative fusion evaluation metrics. The experimental results demonstrate that our approach can enhance the visual quality of the fused images.

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© 2015 Society of Photo-Optical Instrumentation Engineers

Citation

Bin Liao ; Wenzhao Liu and Jing Shen
"Multispectral image fusion based on joint sparse subspace recovery", J. Appl. Remote Sens. 9(1), 095068 (Aug 11, 2015). ; http://dx.doi.org/10.1117/1.JRS.9.095068


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