The Applications Of Embedded Systems Development And Symbolic Dynamics In The Medical Image Digital Watermarking

With the informationalized enhancement day by day of the society, the embedded system is being applied to more and more fields progressively, including intellectual course control, fly control, traffic, medical electron, communication, military electron and home automation. The medical electron is one of the applications very with development prospect of embedded system.In the embedded microprocessor, the processor of ARM series has occupied very great market share, its main characteristic is high performance, low price and low consumption. Because the function of the embedded system is becoming more and more complicated and it needs ability of communication, embedded operating system and TCP/IP stack are being applied in the embedded system largely. This thesis covers ports of embedded real-time operating system uC/OS-II and lightweight TCP/IP stack-lwEP based on ARM7TDMI and corresponding modifications to uC/OS-II according to the needs of reality.Because of the digitizing day by day of medical image, the problem of how to prevent medical image from being modified is proposed. This article brings forward a medical image digital watermarking method based on the symbolic dynamics. This method only needs to modify a little image datum, at the same time focus of medical image needs not to be modified. This digital watermarking method meets the special requirement of medical image.Finally, work done is summarized and the direction of further research is looked forward to.