光电工程
光電工程
광전공정
OPTO-ELECTRONIC ENGINEERING
2015年
8期
20-26
,共7页
三维面形测量%局部数据缺失%数据插补%径向基函数
三維麵形測量%跼部數據缺失%數據插補%徑嚮基函數
삼유면형측량%국부수거결실%수거삽보%경향기함수
3D shape measurement%missing local data%data interpolation%radial basis function
在基于三角测量原理和条纹投影方法的三维面形测量技术中，三角投影会出现局部的阴影、遮挡。此外，为了多次测量数据的有效拼接配准，常常在待测物体表面添加必要的标记点。以上因素都会导致条纹图形的局部断裂，最终导致三维点云数据的部分缺失。为保证三维测量结果的完整性和精度，本文将径向基函数应用于缺失三维点云数据的插补。模拟和实物实验证明，本文算法修补曲面较为光滑，接近物体的原始数据，有望用于三维面形测量结果的缺失数据修补。
在基于三角測量原理和條紋投影方法的三維麵形測量技術中，三角投影會齣現跼部的陰影、遮擋。此外，為瞭多次測量數據的有效拼接配準，常常在待測物體錶麵添加必要的標記點。以上因素都會導緻條紋圖形的跼部斷裂，最終導緻三維點雲數據的部分缺失。為保證三維測量結果的完整性和精度，本文將徑嚮基函數應用于缺失三維點雲數據的插補。模擬和實物實驗證明，本文算法脩補麯麵較為光滑，接近物體的原始數據，有望用于三維麵形測量結果的缺失數據脩補。
재기우삼각측량원리화조문투영방법적삼유면형측량기술중，삼각투영회출현국부적음영、차당。차외，위료다차측량수거적유효병접배준，상상재대측물체표면첨가필요적표기점。이상인소도회도치조문도형적국부단렬，최종도치삼유점운수거적부분결실。위보증삼유측량결과적완정성화정도，본문장경향기함수응용우결실삼유점운수거적삽보。모의화실물실험증명，본문산법수보곡면교위광활，접근물체적원시수거，유망용우삼유면형측량결과적결실수거수보。
Three-dimensional (3D) shape measuring techniques are based on the principle of triangulation and technique of fringe projection. In the process of measuring, triangular projection often produces local shadow and occlusion. In addition, some dark marks are needed to be attached to the tested surface for convenient later data merging. These may lead to local fracture of fringe pattern and finally lose part point-cloud data on the surface of tested objects. In order to ensure the integrity and accuracy of 3D shape measurement results, Radial Basis Function (RBF) is applied to repair the missing 3D point-cloud data. The results of simulation and actual experiment show that the surface interpolated by the algorithm in this article is smooth, which is closed to the original data. And this method is expected to repair missing data in the process of 3D measurement.
