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Towards Accurate Object Localization with Smartphones

机译:使用智能手机实现精确的对象定位

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In this study, we explore the possibility of locating remote objects via cameras together with built-in inertial sensors of off-the-shelf smartphones. Our solution, CamLoc, enables a user taking two photos of an object using a smartphone at a fixed location and immediately knowing the location of the object in global coordinates, thus facilitating myriad location-based services. Such usage is user-friendly but error prone. We devise several techniques to mitigate the errors caused by cheap and noisy sensors, upgrading the positioning accuracy to an applicable level. We prototype CamLoc on Android OS, and evaluate its performance across different scenarios with various building densities. Experiment results show that our system achieves 89 percent and 72 percent physical location mapping accuracy in rural and downtown areas, respectively, which is competitive with existing solutions.
机译:在这项研究中,我们探索了通过摄像机以及现成智能手机的内置惯性传感器定位远程物体的可能性。我们的解决方案CamLoc使用户可以使用智能手机在固定位置拍摄对象的两张照片,并立即知道对象在全局坐标中的位置,从而促进了无数基于位置的服务。这样的用法是用户友好的,但是容易出错。我们设计了几种技术来减轻由廉价且嘈杂的传感器引起的错误,将定位精度提升到适用水平。我们在Android OS上对CamLoc进行原型制作,并以各种建筑密度在不同场景下评估其性能。实验结果表明,该系统在农村和市区的物理位置映射精度分别达到89%和72%,与现有解决方案相比具有竞争力。

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