CAJ | 학술논문

针对复杂封闭内腔尺寸难以测量的问题，提出了一种基于工业CT的鲁棒统计尺度区域拟合内腔体积和曲面积测量方法。该方法首先利用基于二维鲁棒统计尺度区域拟合模型提取出图像目标边缘，进而得到其连续坐标点链码；然后利用拉格朗日方法插值边缘坐标点，进一步提高目标边缘精度；最后利用格林公式和欧式距离公式得到各二维切片的目标区域面积和周长，根据台体公式法得到工件的体积和曲面积。实验结果表明，论文所提出的测量方法精度比改进的CV测量方法高，能够实现封闭内腔的几何测量。
침대복잡봉폐내강척촌난이측량적문제，제출료일충기우공업CT적로봉통계척도구역의합내강체적화곡면적측량방법。해방법수선이용기우이유로봉통계척도구역의합모형제취출도상목표변연，진이득도기련속좌표점련마；연후이용랍격랑일방법삽치변연좌표점，진일보제고목표변연정도；최후이용격림공식화구식거리공식득도각이유절편적목표구역면적화주장，근거태체공식법득도공건적체적화곡면적。실험결과표명，논문소제출적측량방법정도비개진적CV측량방법고，능구실현봉폐내강적궤하측량。
In order to measure complex enclosed inner cavity, a geometric measure method with robust statistics and region-scalable fitting model based on industrial CT( Computed Tomography) is presented to measure vol-ume and surface area of enclosed inner cavity.In this method, the two-dimensional robust statistics and region-scalable fitting model was used to extract the target edge of images.Then, the orderly chain coordinates is got and the Lagrange interpolation method is used to interpolate the orderly coordinates, which further improves the accuracy of measure.And then, Green theorem and Euclidean distance formula are applied to compute the area and perimeter of image.At last, According to the platform formulation, the internal volume and surface area are measured.The experimental results show that the presented measure method has better precision compared to the CV measure methods and can measure complex enclosed inner cavity.