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This paper presents a control system for wind power generation based on LabVIEW. DSP was used in the control system. An embedded real-time operation system was transplanted into the hardware platform, which manage the control task and dispatch the multi-tasks. The control system application software in the computer was programmed with LabVIEW, which perform the measurement, control, analysis and network...
This paper presents an adaptive background image generation method in the complex environment. First, we use difference images between frames in video sequence to generate background image gradually. Second, the background image is updated automatically and quickly by using the individual and the whole change characteristic of the points in the scene. Experimental results show that our method has...
Differing from applying steganography on storage cover media, steganography on voice over IP (VoIP) must often delicately balance between providing adequate security and maintaining low latency for real-time services. This paper presents a novel real-time steganography model for VoIP that aims at providing good security for secret messages without sacrificing real-time performance. We achieve this...
This paper presents an adaptive steganography scheme for Voice over IP (VoIP). Differing from existing steganography techniques for VoIP, this scheme enhances the embedding transparency by taking into account the similarity between least significant bits (LSBs) and embedded messages. Moreover, we introduce the notion of partial similarity value (PSV). By properly setting the threshold PSV, we can...
Power Electronic has been widely used in many fields. There are many common grounds in hardware, software and development of control system of the power electronic devices. This paper fulfilled a common digital platform for power electronic control system. DSP was used as the core of the platform, which can meet the requirement of high precision and real time. An embedded real-time operation system...
Steganography, as one of alternative techniques for secure communications, has drawn more and more attentions. This paper presents a covert communication model based on least significant bits (LSB) steganography in Voice over IP (VoIP). The model aims at providing nice security of secret messages and real-time performance that is vital for VoIP. Therefore, we employ a simple encryption of secret messages...
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