Dual-camera High Magnification Surveillance System with Non-delay Gaze Control and Always-in-focus Function in Indoor Scenes
Dual-camera High Magnification Surveillance System with Non-delay Gaze Control and Always-in-focus Function in Indoor Scenes
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DOI：
10.1109/iros47612.2022.9981485
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发表时间：
2022-10
期刊：
影响因子：
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通讯作者：
Tianyi Zhang;Shaopeng Hu;Kohei Shimasaki;I. Ishii;A. Namiki
中科院分区：
文献类型：
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作者：
Tianyi Zhang;Shaopeng Hu;Kohei Shimasaki;I. Ishii;A. Namiki
本研究提出一种用于室内高倍率监控的双摄像机系统，该系统能够实现基于高速视觉的始终聚焦和无延迟凝视控制。用户可以在宽视角屏幕上自由移动鼠标，同时实时观看其聚焦放大的监控视频。所提出的系统包括一个广角摄像头的宽视图和一个电流镜启用超快速平移倾斜变焦（PTZ）摄像头放大视图。为了实现始终聚焦，提出了一种高速聚焦扫描系统，该系统包括高速相机、齐焦变焦透镜和齿轮机构。通过伺服电机驱动聚焦环的连续往复旋转运动，高速相机捕获具有变化焦距的图像组。此外，我们提出了一个最聚焦（MIF）帧提取算法，以选择最清晰的图像作为输出。实验结果证实了我们的系统的有效性。
This study proposes a dual-camera system for indoor high magnification surveillance which is capable of achieving always-in-focus and non-delay gaze control based on high-speed vision. The users are enabled to move the mouse freely on the wide-view screen while observing its in-focal zoom-in monitoring video in real-time. The proposed system consists of a wide-angle camera for wide-view and a Galvano mirror-enabled ultra-fast pan-tilt-zoom (PTZ) camera for zoom-in view. To achieve always-in-focus, a high-speed focus scanning system is proposed that is comprised of a high-speed camera, a parfocal zoom lens, and a gear mechanism. Through continuously reciprocating rotational motion of the focusing ring driven by the servo motor, the high-speed camera captures sets of images with varying focal distances. Moreover, we proposed a most-in-focus (MIF) frame extraction algorithm to select the sharpest images as output. The experimental results are obtained to confirm the effectiveness of our system.