【摘要】 本文给出一种基于二维投影点集的三维模型检索算法.该算法利用二维投影点集边界点,给出一种结合夹角信息的二维投影轮廓特征提取算法,简单有效地刻画三维模型外围轮廓;同时还利用二维投影点集内部点,给出一种剖面特征提取算法,反映三维模型空域信息.实验结果表明该算法在保证检索效率的同时,显著提高三维模型的检索准确性.更多还原

【Abstract】 This paper proposes a 3D model retrieval algorithm based on 2D projection point set,and gives an angle integrated 2D projection contour feature extraction algorithm by use of the boundary points of 2D projection point set,which depicts the peripheral contour of the 3D model in simple and effective way.At the same time,a profile feature extraction algorithm is given by use of the inside points of 2D projection point set,which reflects the spatial information of 3D model.The experimental results show that the algorithm can ensure the retrieval efficiency and significantly improve the accuracy of 3D model retrieval at the same time.更多还原