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| 一种关键帧的自动提取方法 | |
| 引用本文： | 刘善磊,赵银娣,王光辉,李英成,薛艳丽,李建军.一种关键帧的自动提取方法[J].测绘科学,2012,37(5):110-112,115. |
| 作者姓名： | 刘善磊 赵银娣 王光辉 李英成 薛艳丽 李建军 |
| 作者单位： | 1. 中国矿业大学环境与测绘学院,江苏徐州221008;中国测绘科学研究院,北京100039 2. 中国矿业大学环境与测绘学院,江苏徐州,221008 3. 中测新图(北京)遥感技术有限责任公司,北京,100039 4. 中国测绘科学研究院,北京100039;中测新图(北京)遥感技术有限责任公司,北京100039 5. 四川电力设计咨询有限责任公司,成都,610016 |
| 基金项目： | 国家“863”项目(2008AA121305);国家“863”项目(2009AA121403);国家自然科学基金资助项目(40901221);中国博士后科学基金资助项目(20090450182) |
| 摘 要： | 本文首先介绍了2种主要透镜畸变及摄像机标定方法;然后结合摄像机内部参数和视频帧率推导出关键帧航向重叠度计算公式;在此基础上实现了指定航向重叠度关键帧从文件源或实时源中的自动提取,文件源中采用定位关键帧自动提取算法,实时源中采用定时自动提取算法;最后利用得到的标定参数完成关键帧影像矫正。实验结果表明本文采用的算法能够高效、准确地得到矫正好的指定航向重叠度关键帧。 |
| 关 键 词： | 视频流 关键帧 自动提取 重叠度 |
A method for automatic extraction of key fames |
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| LIU Shan-lei , ZHAO Yin-di , WANG Guang-hui , LI Ying-cheng , XUE Yan-li , LI Jian-jun.A method for automatic extraction of key fames[J].Science of Surveying and Mapping,2012,37(5):110-112,115. | |
| Authors: | LIU Shan-lei ZHAO Yin-di WANG Guang-hui LI Ying-cheng XUE Yan-li LI Jian-jun |
| Institution: | ④(①College of Environment Science and Spatial Informatics China University of Mining & Technology,Jiangsu Xuzhou 221116,China;② Chinese Academy of Surveying and Mapping,Beijing 100039,China;③ China TopRS Technology Co.,Ltd,Beijing 100039,China;④Sichuan Electric Power Design & Consulting Co.,Itd.,Chengdu 610016,China) |
| Abstract: | In the paper,first,two main lens distortions and camera calibration were introduced.Then the formula of key frames forward overlap was developed within intrinsic parameters of the camera and video frame rate.Then key frames were automatically extracted from the file or real time source.Automatic extraction of timing from real time source was processed and key frame positioning method was used for extracting key frames from file source.Finally key frames were corrected with the calibration parameters.Real data was used to test the developed method,and results showed that the technique was efficient and exact. |
| Keywords: | video streaming key frame automatic extraction overlap degree |
| 本文献已被 CNKI 万方数据 等数据库收录！ | |