| 非线性相机模型对AR系统注册精度的改进 |
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| 引用本文： | 丁伟奇,吴家麒,袁政鹏,陈金波.非线性相机模型对AR系统注册精度的改进[J].上海大学学报(自然科学版),2006,12(4):366-370. |
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| 作者姓名： | 丁伟奇 吴家麒 袁政鹏 陈金波 |
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| 作者单位： | 上海大学,机电工程与自动化学院,上海,200072 |
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| 基金项目： | 国家高技术研究发展计划(863计划);上海市科委资助项目 |
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| 摘 要： | 注册是AR系统成功的关键技术之一.最近提出的采用基本矩阵的注册算法,不需要辅助的定位器材,也不需要人工标志物,易于执行,适应范围广,但注册精度有待改进.通过Tsai算法引入了非线性相机模型,对原有图像进行畸变校正,然后用基于基本矩阵的注册算法采用校正后的特征点进行计算.从实验所获得的结果来看,这种方法可以获得较原注册算法更好的精度.
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| 关 键 词： | 增强现实 注册方法 Tsai算法 |
| 文章编号： | 1007-2861（2006）04-0366-05 |
| 收稿时间： | 2005-09-06 |
| 修稿时间： | 2005年9月6日 |
Improvement of AR Registration Accuracy with a Non-linear Camera Model |
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| DING Wei-qi,WU Jia-qi,YUAN Zheng-peng,CHEN Jin-bo.Improvement of AR Registration Accuracy with a Non-linear Camera Model[J].Journal of Shanghai University(Natural Science),2006,12(4):366-370. |
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| Authors: | DING Wei-qi WU Jia-qi YUAN Zheng-peng CHEN Jin-bo |
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| Affiliation: | School of Mechatronical Engineering and Automation, Shanghai University, Shanghai 200072, China |
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| Abstract: | Registration is a key technique in an augmented reality(AR) system.A recent registration method based on fundamental matrix does not need auxiliary instruments and man-made markers,therefore is easily implemented and widely adaptable.However its registration accuracy needs improvement.In this paper the Tsai algorithm is used to introduce a non-linear camera model and correct distortion in the image feature points.The corrected feature points are then applied to the registration method based on a fundamental matrix.Experimental results show that the new registration technique provides better accuracy than the original method. |
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| Keywords: | augmented reality registration method Tsai algorithm |
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