Compared with average filter method, the method can eliminate the noise information in the measurement points more effectively. a data compression method was proposed to compress the measurement points that include huge redundancy under certain accuracy. then segmentation and smoothing method for the measurement points to identify the jump edge, crease edge and smooth edge and optimize the measurement points were conducted so as to reconstruct the surface and generate the manufacturing path conveniently
在一定的精度條件下,該方法可對包含大量冗餘的測量數據進行壓
縮處理;對測量數據進行分片處理,拾取測量數據中的階躍邊界點、
褶皺邊界點和光滑邊界點並優化測點數據,從而便於對測量數據進行nurbs ( non - uniformrationalb - spline )重建和加工路徑生成等后續處理。
The geomechanics based on the change of rotating speed of the earth could answer a large part of the above mentioned questions, but the power which it depends on offered by the expansion or contract of the earth and tides et al is too weak to serve as the energy to change the rotating speed of the earth, so it is also difficult to explain them quantitatively
基於地球自轉速度變化的地質力學理論,對之所做的定性解釋頗為合理,但因其只靠地球收縮及潮汐引力等緩變力作為引起地球自轉速度變化的動力來源,力量強度太小,不足以引發強大的褶皺造山運動,且有被海水運動取代的難題。