Stereoscopic vision based auxiliary walking device for blindmen and auxiliary method thereof

Abstract

The invention discloses a stereoscopic vision based auxiliary walking device for blindmen and an auxiliary method thereof. The device comprises a binocular camera, a central processing module and a voice output module, wherein a left eye camera and a right eye camera of the binocular camera are connected with the central processing module, the central processing module has image processing software mainly used for barrier processing, traffic light processing and off-rod processing, and the output end of the central processing module is connected with the voice output module. When in use, the stereoscopic vision based auxiliary walking device for blindmen is worn on the head of a blindman, and after the stereoscopic vision based auxiliary walking device for blindmen is started up, the binocular camera is used for shooting images, the central processing module is used for carrying out road edge detection, barrier processing, traffic light process and off-road processing, the voice output module gives voice prompt according to processing results so as to help the blindman walk indoors and outdoors without barriers and pass rod junctions safely.

Description

technical field [0001] The invention belongs to the field of machine vision, and in particular relates to a stereo vision-based auxiliary walking device for the blind and an auxiliary method thereof. Background technique [0002] There are about 50 to 60 million blind people in the world, and the number of blind people in my country accounts for about a quarter of the total number of blind people in the world. Blind people are disadvantaged groups and need more help from the society so that they can improve their ability to live independently and have a better quality of life. Assisting the blind to walk is a very important aspect. Various tools for assisting the blind to walk have been researched and developed at home and abroad, but there are still many problems. For example, some devices that assist the blind to recognize traffic lights require installation of sounding devices at each intersection, and some require the control of traffic lights, which will increase cost...

AI Technical Summary

Problems solved by technology

The overall algorithm of Xie Yizheng's assisting system for the blind is complex, and the CCD camera used cannot adapt to the changes in the intensity of natural light indoors and outdoors. In strong sunlight, backlighting and dark light in the evening, the image will be unclear, and it will be difficult to work outdoors.

The obstacle distance measurement method he adopted is complicated and has low ranging accuracy

He only did static obstacle detection experiments indoors, and did not conduct research on outdoor assisted walking, road contour extraction, road departure warning, dynamic obstacle detection, and traffic signal detection.

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