摘要
为实现仅用一幅图象在真正的三维欧氏空间重构三维场景，尤其是动态的三维场景，系统需要对彩色伪随机编码闪光投影系统进行建模和预标定。当系统参数改变后，利用伪随机编码图案的几何约束，不需重新标定，可实现自适应重构三维场景。通过对投影仪像质的的无畸变性分析，用线性模型对投影仪成像过程进行建模，并提出一种高精度的投影系统直接标定方法，通过测出靶标上各投影编码特征点在空间的三维齐次坐标，求出内外参数实现了对投影仪的预标定。标定精度达到0．1单元格，欧氏重构结果较为理想。
To realize the 3D Euclidean reconstruction expecielly for dynamic 3D sciene based on single image, active vision technique , multicolor pseudo-random encoded flash projection system need to be modeled precalibrated. When the system parameters change, using pseudo random coding patterns of geometric constrains can realize the adaptive reconstruction of 3D scene without recalibration. A linear model is used for projector imaging process modeling based on the projector image quality without abnormal denaturation analysis. A high precision direct calibration method is presented for the projection system by measuring three-dimensional homogeneous coordinates of each projection coding feature points on the target to pre calibrate the internal and external parameters. Calibration accuracy is 0.1 cell. Euclidean reconstruction results is ideal.
出处
《计量学报》
CSCD
北大核心
2013年第5期420-424,共5页
Acta Metrologica Sinica
基金
国家自然科学基金，安徽大学"211工程"基金
关键词
计量学
三维重构
建模
标定
投影仪
彩色编码
Metrology
3 D reconstruction
Modeling
Calibration
Projector
Muhicolor codes
