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| 1 | 机器视觉中彩色伪随机编码投影系统及标定显示文摘为了研究基于三维场景单幅二维图像的不标定欧式重构理论,需要构造一个编码投影系统,并预标定出其相关参数。依据伪随机彩色编码的原理,代数射影几何中的交比不变性质,以及被视为逆向照相机投影系统的标定数学模型,提出了投影系统的标定步骤和方法。将一幅伪随机编码图案与投影系统相结合,构造了一种新的视觉投影系统。标定实验表明,由此系统将伪随机彩色编码图案投射到靶标空间,利用CCD照相机拍摄其图像,进行图像的特征点提取和数据处理后得到了投影系统的参数。 | 张勇斌 卢荣胜 费业泰 | 2004 | 哈尔滨工业大学学报2004，36，1： | 10 |
| 2 | Evaluation and Optimization of Intersection Process Between Voxelized Mesh Models and Homocentric Spheres显示文摘In the field of 3D model matching and retrieval,an effective method for feature extraction is spherical harmonic or its mutations,and is acted on the spherical images.But the obtainment of spherical images from 3D models is very time-consuming,which greatly restrains the responding speed of such systems.In this paper, we propose a quantitative evaluation of the whole process and give a detailed two-sided analysis based on the comparative size between pixels and voxels.The experiments show that the resultant optimized parameters are fit for the practical application and exhibit a satisfactory performance. | 柳伟 周雄辉 牛强 | 2011 | Journal of Shanghai Jiaotong university(Science)2011，16，4： | 0 |
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