A visual blind-guiding method and its intelligent blind-guiding device

Abstract

The invention discloses a visible blindman guiding method. The method comprises the following steps: (1) shooting a black and white picture, extracting profile information of the black and white picture, reducing detail elements, and completing image refining to acquire an object profile signal; and (2) transforming the object profile signal into a serial signal according to ergonomic characteristics, and transmitting the serial signal to an image sensor which transforms the serial signal into a mechanical touch signal and sends out contact pin irritation, wherein an intermittent picture touch mode is adopted on tactile vision speed and a proper human sensitive contact pin array is adopted on quantity to lead a blindman to really feel the shape of an object.

Description

technical field [0001] The invention relates to a blind-guiding method and device, in particular to a visual blind-guiding method and an intelligent blind-guiding device thereof. Background technique [0002] With the progress of society, the life difficulties caused by blind people due to visual impairment have become a common concern of all mankind. Due to differences in individual causes of blindness, direct surgery and repositioning of organs for assistance all have great technical and use risks, and the project is huge. A variety of guide products have appeared on the market, mainly including guide dogs, electronic guides, etc. Among them, electronic guides are mainly blind guide devices based on ultrasonic detection of obstacles, such as guide sticks, guide guides, etc. Caps, blind guide tubes, etc., can detect the position of obstacles; they can assist blind people in outdoor activities and guide blind people when walking, but they cannot let blind people know the s...

AI Technical Summary

Problems solved by technology

A variety of guide products have appeared on the market, mainly including guide dogs, electronic guides, etc. Among them, electronic guides are mainly blind guide devices based on ultrasonic detection of obstacles, such as guide sticks, guide guides, etc. Caps, blind guide tubes, etc., can detect the position of obstacles; they can assist blind people in outdoor activities and guide blind people when walking, but they cannot let blind people know the shape of objects or obstacles. When avoiding obstacles, blind people have to rely on hand touch, Get more characteristic information by hitting with a stick, etc.

For many years, technicians are also seeking to design a device that can help blind people see the shape of obstacles and even the surrounding environment. In 2009, relevant materials published in China mentioned a blind-guiding device that uses a color camera to capture images, and then uses this The image is transferred to a wearable tactile device, so that blind people can see this color image through touch, but it is difficult to implement according to the level of current technological development and the specificity of ergonomics.

[0003] First of all, this method mentions that after the image is collected by a high-definition color camera, in order for the blind to touch the color image, it must go through a very complex image recognition technology, which also requires a lot of data access, calculation and comparison processing Image recognition is a cutting-edge technical problem at present, and robot image recognition is also limited to the recognition of specific targets. There is a big technical bottleneck in applying robot image recognition technology to the blind system to guide the blind; secondly, high-definition The image is directly transferred to the tactile device. The clarity of the tactile device depends on the size of its array. It is mentioned in the data that the more stylus in the tactile array, the clearer the blind person can see. Since the image is real-time, the speed is very fast. Fast, but the human sense lags a lot, and the tactile nerve recognizes the characteristics of objects mostly in a serial-based recognition method, so the transfer image recognition of the tactile device mentioned in the article is difficult in terms of time, quantity and method. Meet the tactile perception requirements of the blind

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