Device and method for prompting blind persons to avoid obstacles

A technology for blind people and obstacle avoidance. It is used in appliances that help people move around, physical therapy, etc. It can solve problems such as functions and performance that do not meet the requirements of safe walking for blind people, meet real-time needs, avoid false negatives and false positives, and improve The effect of detection robustness

Active Publication Date: 2015-01-21
INST OF COMPUTING TECH CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the functions and performance of the existing systems are far from meeting the actual needs of the blind to walk safely.

Method used

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  • Device and method for prompting blind persons to avoid obstacles
  • Device and method for prompting blind persons to avoid obstacles

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Embodiment Construction

[0031] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0032] figure 1 A schematic structural diagram of an obstacle avoidance device 100 for the blind according to an embodiment of the present invention is given. Such as figure 1 As shown, the obstacle avoidance device 100 for the blind includes a depth sensor 101 , an image sensor 102 , a sound collector 103 , an obstacle detection component 104 and an interactive feedback component 105 .

[0033] The depth sensor 101 is used to collect a depth image (Depth Image) of the scene ahead of the blind person. Each pixel value in the depth map represents the distance information between a po...

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Abstract

The invention provides a device for prompting blind persons to avoid obstacles. The device comprises a depth sensor, an image sensor, a sound collector, an obstacle detection component and an interaction feedback component. Whether the obstacles are available on roads at the fronts of the blind persons or the blind persons can pass the roads can be detected by the obstacle detection component according to information which is acquired by the various sensors, and control signals can be transmitted to the interaction feedback component according to detection results. The device has the advantages that the information of the various sensors is fused, and accordingly the obstacle detection robustness and identification precision can be improved.

Description

technical field [0001] The invention relates to assisting walking technology for the blind, in particular to an obstacle avoidance prompting device for the blind. Background technique [0002] A large part of human beings' acquisition of external environmental information comes from the visual system. Vision loss and visual disability have brought great difficulties to the lives of blind and visually impaired patients, especially for safe walking. In order to help the blind walk, in recent years, researchers at home and abroad have developed a variety of assistive walking systems for the blind using sensors such as ultrasonic, infrared, laser, and cameras. Ultrasonic, laser, infrared, etc. can only detect obstacles in a certain direction / height, and the method of collecting images through dual cameras to obtain the distance between the object and the camera has high computational complexity and large resource consumption, making it difficult to provide accurate prompts in re...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61H3/06
Inventor 钱跃良刘宏王喆王向东
Owner INST OF COMPUTING TECH CHINESE ACAD OF SCI
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