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Smart phone-based Indoor guidance system for the visually impaired

机译：基于智能手机的视障室内指导系统

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A smart phone camera based indoor guidance system to aid the visually impaired is presented. Most proposed systems for aiding the visually impaired with indoor navigation are not feasible for widespread use due to cost, usability, or portability. A smart phone vision- based indoor guidance system that is simple, accessible, inexpensive, and discrete is developed to aid the visually impaired to navigate unfamiliar environments such as public buildings. The system consists of a smart phone and a server. The smart phone captures and transmits pictures of the user's surroundings to the server. The server processes the images and matches them to a database of stored images of the building. After matching features, the location and orientation of the person is calculated using 3D location correspondence data stored for features of each image. Positional information is then transmitted back to the smart phone and communicated to the user via text-to-speech. This paper focuses on developing the vision technology for this unique application rather than building the complete system. Experimental results demonstrate the ability of the system to quickly and accurately determine the pose of the user in a university building.
机译：提出了一种基于智能手机摄像头的室内导航系统，以帮助视力障碍者。由于成本，可用性或便携性，大多数提议的用于辅助视觉障碍者室内导航的系统在广泛使用中是不可行的。开发了一种简单，可访问，便宜且离散的基于智能电话视觉的室内导航系统，以帮助视障人士导航不熟悉的环境，例如公共建筑。该系统由智能手机和服务器组成。智能电话捕获用户周围环境的图片并将其传输到服务器。服务器处理图像并将其匹配到建筑物的存储图像的数据库。在匹配特征之后，使用为每个图像的特征存储的3D位置对应数据来计算人的位置和方向。位置信息然后被发送回智能手机，并通过文本到语音的方式传达给用户。本文着重于为这种独特的应用开发视觉技术，而不是构建完整的系统。实验结果证明了该系统能够快速，准确地确定大学建筑中用户的姿势的能力。

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