[Research progress of visual prosthesis].

Vision is one of the most important human sensations about the surrounding world. Visual deprivation not only markedly affects the life of blind people, but also gives a heavy burden to their family and the society. A visual prosthesis is an electronic device that helps the blinds to regain visual perception by directly stimulating the visual pathway using the microelectrodes implanted into the body. In recent years, visual prostheses have been developed rapidly and some devices have already become clinically available. In this paper, we reviewed the history of visual prosthesis, introduced different visual prostheses classified according to the location of the implanted stimulating electrodes. Clinical study results as well as the functional status of the currently available visual prosthesis devices were also summarized.

[Implementation of eye movement tracking system based on camshift algorithm].

In this article, the implementation of eye movement tracking system includes three procedures: hardware acquisition, data extraction and overall analysis. The system is based on Camshift algorithm with an eye tracking module added, developed on VC++ 6.0. The system can track the eye movement effectively in simulated phosphene evaluation experiment based on prosthetic vision.

[The development and challenge of vision prosthesis].

This paper introduces the current development and challenges of vision prosthesis.

[Recognition of Gaussian pixelate Chinese character based on simulated prosthetic vision].

In this paper, Gaussian pixelate Chinese character processing software is designed, and HMD is used to realize the recognition experiment for pixelate Chinese characters based on simulated prosthetic vision. The structure of recognition system, software design and the experiment for determining Gaussian width (sigma) are presented. It is shown that when sigma is 0.235, the recognition program is the best.

[Study and design of the Q-switched Nd:YAG laser control system based on S3C2410].

This paper presents a design of the control system for the Q-switched Nd:YAG laser, which is based on S3C2410, and the emphasis is laid on its hardware & software's design. The LCD interface with the function of a touch screen is implemented by the Qt/Embedded graphical interface application programs.