High-precision synchronization of video cameras using a single binary light source

High-precision synchronization of video cameras using a single binary light source
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使用单一二元光源实现摄像机的高精度同步

DOI:
10.1117/1.3247860
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发表时间:
2009-10
影响因子:
1.1
通讯作者:
Chen, Yan Qiu
Chen, Yan Qiu
中科院分区:
计算机科学4区
文献类型:
--
作者:
Zhao, Qi;Chen, Yan Qiu

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摄像机同步对于多摄像机应用是必要的。我们提出了一种简单而有效的方法,称为随机开关光源(ROLS)来同步视频序列。它使用单个光源(例如LED)来生成由摄像机捕获的随机二进制值信号。然后对捕获的二进制值序列进行匹配,并计算摄像机的时间偏移量,直到子帧间隔精度。我们对各种光照条件下采集的视频序列进行了同步测试,并与LED阵列时钟提供的地面真实情况进行了验证。该方法的主要贡献在于只需增加一个简单的光源,就能以较低的成本可靠地实现高精度的同步。此外,它还适用于实验室和室外环境中的同步。
Camera synchronization is necessary for multicamera applications. We propose a simple and yet effective approach termed random on-off light source (ROOLS) to synchronize video sequences. It uses a single light source such as an LED to generate a random binary valued signal that is captured by the video cameras. The captured binary-valued sequences are then matched and the temporal offset of the cameras is computed up to subframe interval precision. We test the proposed method on synchronizing video sequences captured under a variety of illumination conditions and the results are verified against the ground truth provided by an LED array clock. The main contribution of the proposed method is that it reliably achieves high-precision synchronization at a low cost of only adding a simple light source. In addition, it is suited for synchronization in both laboratory and outdoor environments.
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发表时间: 1967-07
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