The main content includes the design of original data collecting system, Image preprocessing, selection and algorithm of filtering method, points cloud creating, reconstruction of 3d CAD model.
主要研究内容包括：数据采集系统设计、图像预处理、滤波方法的选择及其算法、点云生成、三维CAD模型重构。
The classical ways of surface cleaning and preprocessing can hardly content these demand, and at the same time, their pollution and cost make them more unsuitable.
传统的材料表面处理、清洗方法已难以满足设计要求，同时由于污染问题和成本昂贵使用受到限制。
After data preprocessing, a regression model between calorific and ash content was founded by polynomial regression.
经预处理后的数据，运用多项式回归建立了煤炭发热量与灰分之间的回归模型。
After data preprocessing, a regression model between calorific and ash content was founded by polynomial regression.
经预处理后的数据，运用多项式回归建立了煤炭发热量与灰分之间的回归模型。
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