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Efficient watermarking technique for H.264/AVC compressed video
In this work, a new real-time watermarkingtechnique on latest H.264/AVC video standard was proposed. The algorithm works in the compressed domain by embedding watermark bits into quantized DCT coefficients of 4×4 blocks of the I-frame during the Context- ...
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A joint recovery algorithm for distributed compressed sensing
Distributed compressed sensing exploits the correlation among multiple signals to reduce the number of measurements required for recovery. In this paper, we propose a recovery algorithm for a type of joint sparsity model, where all signals share a common ...
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1-bit cooperative compressed spectrum sensing
... spectrum sensing with low cost is proposed. Each cognitive user derives the measurements as the sign information of the compressed samples by using 1-bit quantization. After receiving the sign information from different cognitive users, the fusion center ...
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