arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2007.04934cs.CV
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有人在吗?智能嵌入式低分辨率全向视频传感器,用于测量房间占用率

Anyone here? Smart embedded low-resolution omnidirectional video sensor to measure room occupancy

Timothy Callemein, Kristof Van Beeck, Toon Goedemé

摘要:

在本文中,我们提出了一种具有独特特性的房间占用感测解决方案:(i)它基于全向视觉摄像头,可以在广角范围内捕获丰富的场景信息,从而能够计算房间中的人数,甚至他们的位置。(ii)虽然它使用摄像头输入,但由于其极低的图像分辨率,不会出现隐私问题,使人无法识别。(iii)神经网络推理完全在嵌入传感器的低成本处理平台上运行,进一步降低了隐私风险。(iv)由于我们提出的自训练方案,需要有限的手动数据注释。这样的智能房间占用率传感器可以用于例如会议室和灵活办公桌。事实上,通过鼓励弹性办公桌,所需的办公空间可以大大减少。但在某些情况下,预订的灵活服务台在预订系统中没有更新的情况下仍然无人使用。类似的问题也发生在会议室,这些会议室往往没有被占用。通过优化入住率,可以大幅降低成本。因此,在本文中,我们开发了这样的系统,它确定了目前在办公室灵活的办公桌和会议室的人数。使用安装在天花板上的全向摄像头,结合人员探测器,该公司可以根据测量的入住率智能更新预订系统。在这种自训练全向人检测算法的优化和嵌入式实现之后,在这项工作中,我们提出了一种新的方法,该方法结合了空间和时间图像数据,提高了我们的系统在极低分辨率图像上的性能。

英文摘要:

In this paper, we present a room occupancy sensing solution with unique properties: (i) It is based on an omnidirectional vision camera, capturing rich scene info over a wide angle, enabling to count the number of people in a room and even their position. (ii) Although it uses a camera-input, no privacy issues arise because its extremely low image resolution, rendering people unrecognisable. (iii) The neural network inference is running entirely on a low-cost processing platform embedded in the sensor, reducing the privacy risk even further. (iv) Limited manual data annotation is needed, because of the self-training scheme we propose. Such a smart room occupancy rate sensor can be used in e.g. meeting rooms and flex-desks. Indeed, by encouraging flex-desking, the required office space can be reduced significantly. In some cases, however, a flex-desk that has been reserved remains unoccupied without an update in the reservation system. A similar problem occurs with meeting rooms, which are often under-occupied. By optimising the occupancy rate a huge reduction in costs can be achieved. Therefore, in this paper, we develop such system which determines the number of people present in office flex-desks and meeting rooms. Using an omnidirectional camera mounted in the ceiling, combined with a person detector, the company can intelligently update the reservation system based on the measured occupancy. Next to the optimisation and embedded implementation of such a self-training omnidirectional people detection algorithm, in this work we propose a novel approach that combines spatial and temporal image data, improving performance of our system on extreme low-resolution images.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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