Smartphone based mobile guidance system for blind person

Abstract

The invention provides a smartphone based mobile guidance system for a blind person. The mobile guidance system comprises a basic navigation system, a comprehensive image processing system and a voice auxiliary system. The basic navigation system acquires real-time GPS (global positioning system) signals and processes the signals through built-in navigation software of a smartphone to obtain positioning data, and the system makes a plan of an advancing route after the blind person inputs destination information by voice input. The comprehensive image processing system comprises a blind sidewalk recognition module and a traffic intersection identification module, the blind sidewalk recognition module acquires blind sidewalk information in real time by the aid of a camera of the smartphone and processes the information to realize positioning of a blind sidewalk area, and the traffic intersection identification module acquires traffic intersection information by the aid of the smartphone and realizes intersection information identification by positioning of a zebra crossing when the blind person approaches an intersection. The voice auxiliary system converts processing results of each system into corresponding prompt voices which are fed back to the blind person to guide the blind person to move forward.

Description

technical field [0001] The invention relates to the field of digital image processing, in particular to a mobile blind guide system based on smart phones. Background technique [0002] Due to congenital or acquired reasons, the blind (visually impaired) has partial or complete impairment of the structure or function of the visual organs, and cannot make accurate visual recognition of external things. According to the latest survey by the World Health Organization (WHO) in August 2014, there are approximately 285 million visually impaired people worldwide, of which 39 million suffer from blindness, and about 90% of the world's visually impaired live in low-income countries. The number of visually impaired people in my country accounts for 20% of the world's total, about 57 million people, and is the country with the largest population of visually impaired people in the world. When traveling, the visually impaired can usually only rely on municipal basic guide projects (such...

AI Technical Summary

Problems solved by technology

[0011] Aiming at the defects in the prior art, the present invention provides a mobile blind-guiding system based on smart phones, which further improves the technical framework of the blind-guiding system, conducts in-depth research on the comprehensive image processing part, and solves the current problem of operating the blind-guiding system. The shortcomings of complexity and high price provide a new direction for the development of blind guide systems in the future

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