Visual prosthesis image acquisition device on basis of eye tracking

Abstract

The invention discloses a visual prosthesis image acquisition device which comprises an eye movement acquiring and processing module, a camera and a rotating cradle head. The eye movement acquiring and processing module is used for acquiring an eye movement signal of an eyeball and sending a control signal according to the signal to control the rotation of the rotating cradle head so as to ensure the camera fixed on the rotating cradle head to turn to the rotation direction of the eyeball and acquire an image in the direction, wherein the eye movement acquiring and processing module comprises an eye movement camera for shooting a video of movement of a pupil of the eyeball and an eye movement video receiving and processing unit for receiving the video and acquiring the rotation direction of the eyeball by the video. According to the invention, by acquiring the rotation direction of the eyeball in real time so as to control the rotating cradle head to drive the camera to turn to the direct and acquire the image in the direction, the biomimetics on human vision and eye movement functions is well implemented, so that a user acquires the prosthesis visual experience closer to the normal vision.

Description

technical field [0001] The invention relates to the field of biomedical engineering, in particular to an image acquisition device for visual prosthesis based on eye movement tracking. Background technique [0002] A visual prosthesis is an implanted medical electronic device that restores some degree of vision to severely blind patients. It takes advantage of the fact that most blind patients often only have a part of the visual pathway with lesions, while the structure and function of the rest of the nervous tissue are still intact, and applies specific artificial electrical stimulation to the intact part of the visual pathway to excite nerve cells, simulating natural light stimulation. The effect allows the user to have a visual experience. The visual prosthesis system usually includes an image acquisition device located outside the user's body (usually a miniature camera), an image processing device, an electrical stimulation coding device, and a microelectrode array imp...

AI Technical Summary

Problems solved by technology

It can be seen that the visual prostheses of the prior art do not well realize the bionics of human vision and eye movement functions, and cannot make full use of the physiological characteristics of the human eye to quickly search and locate the target through eye movement

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