在指数矩定义与计算方法的基础上,提出应用指数矩矩阵描述高分辨率图像的方法.结合图像分割理论并延伸处理各子图,利用快速傅里叶变换计算高分辨率图像指数矩矩阵,然后逆向重构子图并重组原图.对重组图像进行基于Itti视觉注意模型的客观感兴趣区域信噪比分析.仿真结果表明,延伸处理可减弱由分割所带来的重组图像方块效应,也可提高重构图像的信噪比,验证了由图像指数矩矩阵描述高分辨率图像的可行性.
Based on the definition and calculation method of exponential moments, this paper describes a high-resolution image using the exponential moment matrix. Combining image segmentation and further treatment of sub-images, we use FFT to calculate the exponential moment matrix of a high-resolution image. Each sub-image is then reconstructed with the obtained exponential moment matrix. The original image is recomposed using the reconstructed sub-images. Meanwhile, based on Itti's visual attention model, SNR of the objectively interested area in the reconstructed image is analyzed. Simulation results show that the reconstructed image block effect caused by segmentation can be reduced, and SNR of the reconstructed image is improved. It is shown that describing a high-resolution image with image moment invariant matrix is feasible.
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