A CMOS image sensor with high-speed readout of multiple regions-of-interest for an opto-navigation system
A CMOS image sensor with high-speed readout of multiple regions-of-interest for an opto-navigation system
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用于光导航系统的可高速读出多个感兴趣区域的 CMOS 图像传感器
DOI：
10.1117/12.596755
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发表时间：
2005
期刊：
影响因子：
--
通讯作者：
J. Ohta
中科院分区：
文献类型：
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作者：
Koji Yamamoto;Yuki Maeda;Y. Masaki;K. Kagawa;M. Nunoshita;J. Ohta
我们提出了一种CMOS图像传感器，它可以捕获整个图像在60 fps和几个区域的利益（ROI）的图像在高速帧速率为2.1 kfps。我们已经设计了一个传感器原型，我们新开发的人机界面系统称为“光导航”。在该系统中，LED作为光学信标配备有便携式设备，如移动的电话和数码相机，并提供了一个有用的指导，视觉辅助数据通信与他们。光学信标以10 Hz左右的低频率（定义感兴趣区域）通知其位置，并以1 kbps的比特率将其ID数据发送到传感器。该传感器可以识别具有60 fps图像的帧差的ID的位置，然后通过以高帧速率仅阅读ROI来获得ID数据。因此，通过使用图像传感器，用户可以知道哪些设备可以与之通信，并选择其中之一来发送/接收信息数据。采用0.35 μ m2-poly 3-metal标准CMOS工艺，研制了一种用于“Opto-Navi”系统的QVGA图像传感器。像素面积为7.5 × 7.5 μm2，填充因子为24.9%。
We propose a CMOS image sensor which can capture both whole images at 60 fps and several region-of-interests (ROIs) images at a high-speed frame rate of 2.1 kfps. We have designed a sensor prototype for our newly developed man-machine interface system called “Opto-Navigation”. In the system, LEDs as optical beacons are equipped with portable devices such as mobile phones and digital cameras, and provide a useful guide for visually aided data communication with them. The optical beacons inform their positions at slow frequency around 10 Hz, which define ROIs, and send their ID data with bit rate of 1kbps to the sensor. The sensor can recognize the position of IDs with frame differences of 60-fps images and then obtain the ID data by reading only ROIs at high frame rate. Thus by using the image sensor a user can know what devices can be communicated with and select one of them to send/receive information data. A QVGA image sensor dedicated for the “Opto-Navi” system has been fabricated in a 0.35-μm 2-poly 3-metal standard CMOS technology. The pixel has 7.5 × 7.5 μm2 area with a fill factor of 24.9%.