The median filtering is a common method in image processing, but it is limited when it faces the swash noise of space high density, because it depends on the fixed Windows and the data points.
中值滤波是图像处理中比较常用的滤波方法，但是它对窗口和数据点的依赖使它在处理空间密度较大的冲激噪声时受到限制。
Feature data points acquired by structured light scanning are accurate and the distribution density of those data points is nonuniform.
结构光扫描获取原始数据精度较高，但是存在数据密度不均的问题。
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