| With rapid development of technology, people are paying more and more attention to education. This article researches and designs real-time intercrossing system of practical network ---intercrossing electronic whiteboard system, which used to expand the teaching field based on the characteristics of teaching. By putting multimedia and other modern network technology into teaching, the traditional model of using chalk and blackboard has been changed. Through this, theory teaching and direct teaching are combined which can encourage the students to improve teaching quality, and efficiency and enlarge teaching scale.According to the Features of teaching characteristics and teachers' using habits, we designed talored functions for teachers, which is simpler, clear and user friendly. For case of unstandarded graphs, we specially designed fuzzy algorithm to recognize and revise the figures, which is very practical.In this paper, for the characteristics of the application such as cost-effective products, broaden horizons and easy maintenance features, we select a hardware implementation of the whiteboard based on infrared sensor, and for devices for infrared sensor response to unpleasant, high-resolution non-corresponding to complete software system. Based on frequent user interaction and information necessary to conduct more real-time features, we choose the C/S structure mode. Multiple users can use this mode of communication between each other, which not only saves resources, the server can also have the more selection to manage communication of users.The GDI+ SDK, TCP/IP SOCKET, Multi-threaded programming, double buffer display and a wide range of advanced technology is used in the system to achieve the above-mentioned functions, and focus on researching the recognition technology of graphics, and a new fuzzy recognition algorithm is worked out to amendment the graphics, which has the higher recognition rate, and the effect is much more obviously. |
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