摘要
为了解决个性化鞋楦开发中三维脚型获取与检索困难的问题,提出一种三维脚型精确建模与比对方法.运用已标定的双目照相机拍摄立体图像对,进行足部整体视差估计;在对立体图像对进行自动预处理后,采用非接触式的信息采集技术,运用基于复小波的相位相关技术对足部表面进行亚像素级小区域频域匹配,考虑顺序匹配约束、连续性约束和相关性约束条件,重建足部密集三维点云信息,并自动拼接不同角度点云生成相应的足部三维模型;对其归一化后,提取其高阶矩向量进行比对,为后续的三维鞋楦设计提供必要信息.实验结果表明,该方法使足部信息采集过程快捷可靠,重建过程不需要人工干预.
An accurate 3D modeling and comparison method for foot is presented to solve the difficulty in acquirement and searches of 3D foot in the exploitation of shoe last. The stereo image pair is acquired by a pair of calibrated cameras. Global disparity of foot is estimated at first. After the image pair is preprocessed automatically, using non-contact information-collecting technique and phase-correlation method, which is based on complex wavelet, surface matching with sub-pixel accuracy in the frequency domain is carried out. By taking order matching constraint, continuity constraint and correlation constraint together, 3D point cloud of foot is reconstructed and 3D model of foot is built by mosaicking point cloud at various angles automatically. After normalization, high-order moments are compared, which is useful for the subsequent shoe last design. Experimental results show that with our proposed method, foot information collection is fast and reliable, and entire reconstruction can be done without manual intervention.
出处
《计算机辅助设计与图形学学报》
EI
CSCD
北大核心
2009年第6期782-788,共7页
Journal of Computer-Aided Design & Computer Graphics
基金
国家自然科学基金(50775201)
国家科技支撑计划(2006BAF01A45-09)
浙江省科技支撑计划(2008C21084)
浙江省自然科学基金(Z107416)
关键词
双目视觉
鞋楦
重构
逆向工程
比对
binocular vision
shoe last
restructure
reverse engineering
comparison
