An EEG-controlled video input auditory display device and method for guiding the blind

Abstract

The invention discloses a device and method for guiding the blind with video input auditory display controlled by brain electricity. The device includes a video acquisition module, an EEG acquisition module, a processor and an audio playback module, the video acquisition module is connected to the processor, the EEG acquisition module is connected to the processor for collecting EEG signals, and the audio playback module is connected to the processor connection, the processor is respectively connected with the video acquisition module, the EEG acquisition module, and the audio playback module. The invention realizes the control of the region of interest in the blind guide device through the EEG signal, can conveniently realize the switching between perceiving the whole picture of the image and the details of interest in the perceiving image, and uses the EEG to set the region of interest in the current video for use The latter provides flexible auditory display resolution and control methods. Users can perceive the global information or local detail information of the image through the setting of the region of interest, which can effectively make up for the lack of low resolution of auditory display. The present invention can be widely used in various occasions that need to guide the blind.

Description

technical field [0001] The invention relates to the field of signal processing, in particular to a brain-electrically controlled video input auditory display device and method for guiding the blind. Background technique [0002] 90% of the information obtained by humans comes from vision, and visual damage will bring great inconvenience to people's lives. When visual impairment occurs, after adaptation and training, patients can usually use some devices to convert visual information into signals that other sensory organs can perceive, so as to indirectly obtain part of the visual function with the help of other sensory organs, improving self-care ability and quality of life . This device that converts visual information into signals that other sensory organs can perceive is generally called a blind guide system. [0003] Existing blind guide systems have many different structures. Commonly used input sensors include ultrasonic, infrared, laser, video, multi-sensor input, e...

AI Technical Summary

Problems solved by technology

[0005] However, the existing video input auditory display guide system has the following disadvantages: (1) The resolution of the auditory display is low

Due to the different ways of receiving information between human auditory organs and visual organs, the existing auditory display technology can only roughly represent the key content in the video input, and it is difficult to further represent more detailed video information

(2) The resolution of the auditory display is fixed

In the existing blind-guiding system with video input and auditory display, the auditory display usually has a fixed mapping relationship with the video input screen, so the auditory display has a fixed resolution and it is difficult to provide users with more information

(3) Inflexible control

In the existing blind guide system with video input and auditory display, it is difficult for the user to perform actions such as gazing at the area of ​​interest and focusing on the distance as conveniently as using the visual organ, which is not convenient and flexible enough to use

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