Citation: | YANG Yong, LU Hangyuan, HUANG Shuying, et al. Remote sensing image fusion method based on adaptive injection model[J]. Journal of Beijing University of Aeronautics and Astronautics, 2019, 45(12): 2351-2363. doi: 10.13700/j.bh.1001-5965.2019.0372(in Chinese) |
The purpose of remote sensing image fusion is to fuse high-spectral-resolution low-spatial-resolution multispectral (MS) images and high-spatial-resolution low-spectral-resolution panchromatic (PAN) images, so as to obtain the fusion images with high spectral resolution and high spatial resolution. How to determine the injection details and injection coefficients in the injection model is the key to image fusion research. For detail optimization, a multi-scale Gaussian filter is defined by simulating the characteristics of MS sensor, and then the filter is used to convolve with PAN image to extract the details and obtain the details highly related to MS image. In order to optimize the injection coefficient, an adaptive injection coefficient is proposed based on spectral information and detail information. To better preserve the edge information, a new edge preserving weight matrix is proposed to achieve the dual fidelity of spectral information and space. Finally, the optimized injection coefficient is multiplied by details and injected into the up-sampled MS image to obtain the final fusion result. Performance analysis of the method proposed in this paper has been carried out and a large number of tests have been conducted in each satellite dataset. The experimental results show that, compared with the most advanced methods, the proposed method performs best in both subjective and comprehensive objective assessment.
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