Directional smoothing filter is frequently used in digital image processing for it has the double properties of noise filtering and edge preserving.
方向平滑滤波器兼有去噪和边缘保持的双重特性，在数字图像预处理中被经常采用。
A clothoid curvature smoothing algorithm was presented according to the road curvature information from the GPS system and digital map.
利用GPS全球定位系统和数字地图提供的道路曲率信息，提出了一种回旋曲线道路曲率平滑算法。
When the speed pulse signal is provided, a calculation of the speed curve is achieved using first order digital differential method and the lease square of five points three times smoothing approach.
对于有转速脉冲信号的情况，实现了基于一阶数字微分和最小二乘五点三次平滑方法的转速曲线计算方法。
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