Research And Application On A Human-Computer Interactive System Based On Detection And Location Of Laser Senor

With the rapid development of science and technology, applications of human-computer interactive technology become more and more mature, usage of this technology is becoming more and more common. Nowadays, there are a variety of technologies to realize the human-computer interaction. Human-computer interaction not only consider the precision of input and output, but also pay more attention to natural and efficient interaction with person. However, there are a few number of interactive points supported by current human-computer interactive system, the size of interactive surface is also relatively small, which only ideal for one or two person to experience the interaction. Meanwhile, noise caused by the running motor of laser sensor has a great influence on the human-computer interactive system. A human-computer interactive system based on detection and location of laser senor is designed and proposed in this paper to solve this deficiency. Raw data with noise is preprocessed by comprehensive filtering, including zero value point filtering and dynamic adaptive filtering, etc. This human-computer interactive system designed in this article breaks through the restrictions of the number of interactive points, as well as the size of interactive surface. Multi-user can interact in real-time on the great size of interactive surface through this system. It can be widely applied to in the related fields, such as interaction in business presentations, interaction in exhibitions, interaction in entertainment and so on.The human-computer interactive system proposed in this paper uses two-dimensional laser sensor as the of the core of the hardware. This paper introduces the working principle and analyzes the errors. Programming by using C# language realizes a number offunctional modules such as the hardware control, data transmission and communication, data processing, etc. These functional modules connect with each other to become a set of control software. A comprehensive filter algorithm is proposed in this paper for system noise. Raw data with noise is preprocessed by zero value point filtering and dynamic adaptive filtering, then adaptive threshold nearest neighbor clustering filter is used for the data which has been preprocessed. It has been verified by lots of contrast experiments between the conventional filter and the comprehensive filter that the comprehensive filter algorithm can effectively reduce noisy points and improve interactive points’ tracking and positioning accuracy. The algorithm can also run in real time and greatly improve the interactive experience. The content of interaction is designed and displayed by 3D editing software-- Ventuz, then users can actively interact on the interactive screen.The human-computer interactive system proposed in this paper has been successfully applied to intelligent medical center of ZhangJiaGang People’s Hospital. After installed interactive screen and debugged human-computer interactive system, system runs stably and multi-user real-time interaction achieves excellent performance. The successful implementation of project shows that the human-computer interactive system proposed in this paper can be widely used in the related fields and can realize human-computer interaction on large size of interactive surface. This system supports multi-user to interact in real-time. Through this system, information can be spread actively, and human-computer interaction becomes more efficient, more natural, more entertaining and more human-friendly.