Research And Realization In Character Recognition Based On Support Vector Machine

Image processing technology began in the 1950s, it became a new subject in the 1960s quickly. With the development of the society, the image processing technology has played a more and more important role in our life, such as in science research, military technology, medicial and health service, industrial production and government department. However, traditional statistic mode for recognition realized on the base of PC, such as template matching and neural network. For this way, it could get good effectiveness only under the condition of adequate samples. Its system has great limitations on the portable and moving hands. With the development of the society, people have the increasing need of real time data processing. On based of this present situation, this paper put forward a way to realize character image recognition using support vector machine algorithm on the platform of embedded Linux operation system.(1) For the pretreatment of the image, on the hands of image capture, character location, character segmentation, author compares the good points and bad points of all kinds of algorithm. Meanwhile, for the important two hands (character location, character segmentation), author also puts forward his new thoughts and solvements.(2) Character recognition. After deeply learning the Support Vector Machine algorithm, on the base of Fourier descriptors and support vector machine is presented. Character features are extracted from the outer contour by Fourier descriptors, which constructs the input vector of the multi-classes support vector machine. The test results show the effectiveness of the algorithm even with limited samples.(3) The overall design of the system. This paper firstly summarizes the development course and current situation of the research for character recognition system. Then it designs the framework of the software and hardware of the character recognition system. It also has a serious study and discussion for the development of embedded Linux system.(4) On the platform of Linux operation system, it will realize the following functions. Firstly, it realizes the video-capturing module based on the research of the V4L standard and the USB camera driver under Linux. Second, it realizes PPP protocol on the embedded Linux system, which endows the intelligent terminal with the functions of wireless internet connection and transfer a large amount of data.