Blindman outdoor support system based on computer vision

Abstract

The invention discloses a blindman outdoor support system based on computer vision, which comprises an image acquiring unit, a voice output unit, and an image-voice converting unit respectively connected with the image acquiring unit and the voice output unit, wherein the image-voice converting unit comprises an image-voice converting hardware unit and an image-voice converting software unit; and the image-voice converting software unit comprises camera parameter calculation software, plane detection software, obstacle detection and analysis software and image information-voice conversion software. In the system, a binocular camera is utilized to acquire images, a walkable area as well as obstacles and properties of the obstacles corresponding to the physical space in an image are extracted by a software algorithm in an embedded image processor, information is fed back to the blindman through a voice interface so as to assist the blindman to better understand road scenes and make a more comprehensive judgment, expand the sensing range of the blindman and avoid dangers. The device has a small size and low cost, is convenient to carry and facilitates the outdoor activities of the blindman.

Description

technical field [0001] The invention belongs to the field of blind guide technology, and in particular relates to an outdoor support system for the blind based on computer vision. Background technique [0002] With the development of society, people pay more and more attention to special groups in society, such as the blind, deaf-mute, disabled and so on. They hope to use the latest technology to add convenience to their lives, so the guide system for the blind has always been a hot spot of social concern. According to statistics from the China Disabled Persons' Federation, there are nearly 9 million blind people in China, accounting for about one-fifth of the world's total. The development of an outdoor walking support system for the visually impaired to help them walk independently more comfortably and conveniently is an important issue in my country's "Development of the Cause of the Disabled" An important content of the Eleventh Five-Year Plan Outline. [0003] The cane...

AI Technical Summary

Problems solved by technology

The blind guide is mainly reflected in the recognition of "object" features, but in the current research, the machine learning software is far from reaching the usable stage, unable to provide accurate and real-time object recognition results, and at the same time, it cannot meet the requirements of the blind guide. The basic function is to find a safe walking area. The learning algorithm of the software restricts the blind to only move in the familiar environment, limits the range of activities of the blind, and cannot meet the outdoor activities of the blind.

[0008] There are still some problems in the above three types of existing outdoor support systems for the blind: (1) the blind cannot be warned in advance for the suspended obstacles, causing the blind to be injured; Type, static and mobile attributes are unable to make a comprehensive judgment; (3) unable to assist the blind to understand the surrounding environment, such as helping the blind to locate, obtain intersection information, and judge whether they are currently passable; (4) unable to recognize the people around them, Low reliability, limited outdoor use

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