Image processing device and method of visual cortex prosthesis

Abstract

The invention discloses an image processing device of visual cortex prosthesis. The image processing device comprises a left miniature camera, a right miniature camera, an image preprocessor and an image coder, wherein the left and right miniature cameras output respectively and synchronously collected video information in real time to the image preprocessor; the image preprocessor splices and merges two paths of received video information into one full-view image, and further completes the preprocessing operation such as image filtering, enhancing and pixel reduction, and outputs the image to the image coder; the image coder performs further processing and coding on the preprocessed full-view image and converts the image into an electric signal capable of being received by the human body visual cortex. The image processing device provided by the invention realizes the goal of converting the image information collected by double cameras into a current signal used for irritating the visual cortex; on the premise of ensuring the nerve cells to issue the equivalent action potential, the intensity of the incitation current can be effectively reduced, so that the goal of effectively reducing the brain tissue injury can be achieved.

Description

technical field [0001] The invention relates to a visual cortical prosthesis, in particular to an image processing device and method for a visual cortical prosthesis. Background technique [0002] A visual prosthesis is a device that electrically stimulates the visual nervous system to allow the blind to restore light. At present, scientists and technicians in many countries are studying the use of visual prosthesis to restore the visual function of the blind. According to the implantation position of visual prosthesis, it can be divided into retinal prosthesis, optic nerve prosthesis and visual cortex prosthesis. Among them, the visual cortex prosthesis can directly stimulate the visual cortex, bypassing the retina and optic nerve that may have lesions in the visual pathway, and is suitable for more blind people. Therefore, it has a wider range of applications than the other two visual prostheses mentioned above. [0003] The design principle of the visual cortex prosthesi...

AI Technical Summary

Problems solved by technology

The master's thesis "Overall Design and Front-End Implementation of Artificial Visual Prosthesis Based on Primary Visual Cortex" published in June 2016 provides a corresponding solution, drawing on the idea of ​​sparse coding and using sparse neuron responses to represent the boundary information of the target in the image. However, the visual attention mechanism is not used to detect the salient areas of the image. The image processing scheme given in this paper is only applicable when the target occupies a large area of ​​the field of view. If the salient target in the image only occupies a small part of the field of view , after reducing the pixels of the entire image, the information about the salient target in the image will be greatly reduced

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