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The least-significant-bit (LSB) technique is one of the commonly used steganographic algorithms in the spatial domain. In most existing schemes, they didn’t carefully analyze the relationship between the image content itself. Hence, the smooth areas in the cover image will inevitably be contaminated after hiding even at a low embedding rate, thereby leading to poor visual quality and low security...
In this paper, we proposed a novel method to embed a series of ternary secret data into a cover image based on an improved Least-Significant-Bit (LSB) scheme using the modulo three strategy. Our new method can hide two ternary numbers into each grayscale pixel, normally only modify the two LSBs of the pixel, while it may cause overflow/underflow and a carry/borrow. We solve these problems by adding...
Data hiding, also known as information hiding, plays an important role in information security for various purposes. Reversible data hiding is a technique that allows distortion-free recovery of both the cover image and the secret information. In this paper, we propose a new, reversible data hiding scheme that is based on the Sudoku technique and can achieve higher embedding capacity. The proposed...
In this paper, a PC-based distributed multiple-display virtual reality system is constructed. The system is a PC-based CAVE environment. Five PCs are used in this system; one is the master responsible for receiving user's input signals, the others are clients for images rendering. Devices are added to synchronize the RGB signals from client PCs.A software library is developed to drive the system properly...
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