| 一种视频序列的拼接算法 |
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| 引用本文： | 郭三华,方贤勇,罗斌. 一种视频序列的拼接算法[J]. 计算机应用, 2007, 27(11): 2786-2788 |
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| 作者姓名： | 郭三华 方贤勇 罗斌 |
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| 作者单位： | 安徽大学,计算智能与信号处理教育部重点实验室,合肥,230039;安徽大学,计算智能与信号处理教育部重点实验室,合肥,230039;安徽大学,计算智能与信号处理教育部重点实验室,合肥,230039 |
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| 摘 要： | 提出了一种视频序列的拼接算法。首先在同一镜头下的视频序列中提取若干关键帧，利用关键帧拼接表示序列的拼接；其次利用光流场算法计算出的运动位移量引导相邻关键帧间特征点的匹配,并结合随机抽样一致性（RANSAC）鲁棒估计算法和单映矩阵的级联性，得到相邻关键帧、非相邻关键帧间的对应矩阵；最后通过融合实现了序列的无缝拼接。实验验证了这种方法的有效性。
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| 关 键 词： | 关键帧 光流场 无缝拼接 |
| 文章编号： | 1001-9081(2007)11-2786-03 |
| 收稿时间： | 2007-05-22 |
| 修稿时间： | 2007-05-22 |
Mosaic algorithm of video sequence |
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| GUO San-hua,FANG Xian-yong,LUO Bin. Mosaic algorithm of video sequence[J]. Journal of Computer Applications, 2007, 27(11): 2786-2788 |
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| Authors: | GUO San-hua FANG Xian-yong LUO Bin |
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| Abstract: | A mosaic algorithm of video sequence was proposed. Firstly, the key frames were extracted from the video sequence. Then, the features detected between adjacent key frames were guided and matched by motion displacement, which was calculated by the optical flow field. With the RANSAC (RANdom SAmpling Consensus) robust estimation and cascade of homography matrix, the homography matrix of the adjacent key frame and the non adjacent key frame was got. Finally, the seamless mosaic was rendered by image blending. The experiment demonstrates this algorithm is effective. |
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| Keywords: | key frame optical flow field seamless mosaic |
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