Guideboard recognition blind-guide device and method thereof based on DSP

A street sign and recognition unit technology, applied in the field of pattern recognition, can solve problems such as single content and less information, achieve the effects of reducing volume and cost, ensuring computing speed, and improving recognition rate and effectiveness

CN101584624AInactive Publication Date: 2009-11-25SHANGHAI JIAO TONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
Publication Date
2009-11-25
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a guideboard recognition blind-guide device and method thereof belonging to the field of pattern recognition technique based on DSP. The device includes: an outside information acquisition module for collecting information ahead of visual field and switching the information into greyscale information and outputting the information onto the guideboard detection module; a guideboard detection module for storing and processing the image information collected from the outside information acquisition module, and obtaining the zone related to the guideboard information in the image by image processing method, processing the zone where the guideboard is located using the pattern recognition method, looking for digital audio signal corresponding to the character and outputting the signal to the sound switch module; a sound switch module for switching the digital audio signal into a analog audio signal. The earphone switches the analog audio signal into a sound signal, and outputs to blindman. The device provided by the invention uses DSP for finishing character recognition, ultimately tells blindman by hearing instead of vision effect, and is used for guiding and directing blindman when walking on road.
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Description

technical field

[0001] The invention relates to a device and a method in the technical field of pattern recognition. In particular, a DSP-based street sign recognition guide device and method thereof. Background technique

[0002] As a main channel for people to obtain external information, vision plays a very important role in our life. Blind people with vision loss will encounter many difficulties in life. The blind road can indicate the direction of the road and the turning position for the blind, but it hardly plays its due role in judging the road and direction. Therefore, providing the information required by vision to the blind through other sensory means will provide great convenience for the life of the blind.

[0003] After searching the existing technical literature, it is found that the Chinese invention, patent application number 200710039631.4, publication number 101040809, is named: visual substitution method based on cognition and target recognition. This t...

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Embodiment Construction

[0019] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: this embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and specific operating procedures are provided, but the protection scope of the present invention is not limited to the following the described embodiment.

[0020] like figure 1 As shown, the blind guide device of this embodiment includes: a black-and-white camera (that is, an external information intake module), a street sign detection module, a sound conversion module and peripheral earphones. The black and white camera collects the information in front of the field of view and converts it into grayscale information and outputs it to the road sign detection module; the road sign detection module stores and processes the image information collected by the black and white camera, and obtains the area of ​​the road sign in...