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The effects of the Rician noise on the calculated tensors are analyzed and an affine invariant gradient (AIG) based nonlinear anisotropic smoothing strategy is presented. The AIG based smoothing strategy is a development of the affine invariant nonlinear anisotropic diffusion (AINAD) restoration model, introduced by Guillermo Sapiro, and adopted to restore vector-valued data. To evaluate the efficiency of the presented AINAD model in accounting for the Rician noise introduced into the vector-valued data, the peak-to-peak signal-to-noise ratio (PSNR), signal-to-mean squared error ratio (SMSE) and Beta(parameter that stands for edge preservation) metrics are used. The experiment results acquired from the synthetic and real data prove the good performance of the presented filter. 相似文献
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舰载指挥仪综合检测平台的设计与实现 总被引:1,自引:1,他引:0
针对多型舰载指挥仪,采用数字--物理仿真模式,建立了一个指挥仪精度检查的自动检测平台.该平台采用分布式计算机结构,按照模块化设计思想,以智能电路和相应机电设备,提供指挥仪静动态精度检查所需的如雷达、声纳、平台罗经等设备的所有相关信号,并采集指挥仪射击诸元,自动生成检查报告表.系统联调表明,相对传统检测方法,使用该平台后自动化程度显著提高,检测精度得到改善,实时性强,并且指挥仪完全工作于实战状态,可信度高. 相似文献
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