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The emerging H.264 SVC (Scalable Video Coding) standard specifies an encoder solution responsible for generating a multi-layer stream, which provides extra flexibility for modern multimedia applications. The increased data dependency among different layers demands a significant overall encoder performance. Aiming the use of an SVC solution in real-time applications we propose an optimized hardware...
This paper presents a comparison with the conventional watermarking technique and the novel 5-stage pipelined implementation of DCT/IDCT which is used in digital image watermarking. The most common method of Discrete Cosine Transform (DCT)-based digital image watermarking which is used for image authentication and copyright protection is the transpose method. In this method the 2-Dimensional DCT is...
One of the major building blocks in an image data compression system is the discrete cosine transform or DCT; which can be achieved using specialized algorithms. This paper presents a method to implement the DCT compression technique using the Lee algorithm. Rapid prototyping based on FPGA platform of the Spartan-3E family is used to validate the operation of the described DCT system. This system...
To reduce the bandwidth requirement and the size of frame memory for video decoding, embedding a compressor/decompressor on the chip is a well-known solution. Video compression has been developed for a long time and numbers of algorithm have been proposed. Those algorithms show us that enhancing the complexity can reach better performance. However, algorithm with higher complexity is more difficult...
Despite rapid advances in science and technology of liquid crystal display (LCD); elimination of motion-related artifacts and preservation of color purity in moving images have remained elusive because gray-scale to gray-scale response time, i.e., time taken to switch pixels from one gray-scale to another depends on the initial and final gray shades. A technique wherein gray scale to gray scale response...
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