A back and forward filter with steeper transitional band was designed of ellipse function. It can remove nonlinear phase distortion caused by IIR filter.
利用椭圆函数滤波器较陡的过渡带特性设计前向和后向滤波器，消除由于IIR滤波器造成滤波后的数据相位非线性失真。
When images are denoised by means of nonlinear filtering algorithms, the selections of the threshold parameter and the filter function tend to have great effects on the quality of the denoised images.
采用非线性滤波方法处理图像去噪问题时，阈值参数的选取和滤波器函数的使用对去噪图像的效果影响极大。
GANF is a class of nonlinear adaptive filter achieved by replacing the Boolean function operator with a neural operator.
GANF是用神经运算器代替级叠滤波器中的布尔运算器后得到的一类非线性自适应神经滤波器。
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