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一、概述 NRS50是一台功能完善、满足多种标准格式变换的时基/同步器,它由一个功能强大的二级降噪器和一个瞬时中值滤波器组成,降噪器是一种非线性自适应递归滤波器,而中值滤波器能够消除噪声峰值且不产生拖尾现象。中值滤波器还特别适用于消除胶片脏点产生的脉冲噪声或者消除通过卫星源接收的图像中的雪花干扰。所有递归的中值降噪系数都是可调的,并且样条图像显示了被处理信号的最低可计算噪声,以使自适应阀值得以精确设定。
I. Overview The NRS50 is a fully functional time base / synchronizer that meets a variety of standard format transformations. It consists of a powerful second-order noise reducer and an instantaneous median filter. The noise reducer is a non- The linear adaptive recursive filter, while the median filter to eliminate noise peaks and does not produce trailing phenomenon. The median filter is also particularly suitable for eliminating impulsive noise generated by dirty film spots or for eliminating snow flaws in images received via satellite sources. All recursive median noise reduction coefficients are adjustable, and the spline image shows the lowest computable noise of the processed signal to allow for an accurate setting of the adaptive threshold.