Gaorong Zeng

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The position of watermarking plays an important role when the tradeoff between robustness and inaudibility is considered. In the paper we analyze the mathematical relationship between the embeddable position and the noise of the audio watermarking in the DCT (discrete cosine transform) domain. We consider DC (direct current) coefficient to tradeoff(More)
We propose a novel blind robust watermarking scheme which embeds a digital watermark into the DCT coefficients of the host image based on human visual models (HVS). Watermark extraction utilizes independent component analysis (ICA) technique which is a blind source separation procedure without requiring the host image and the original watermark. Our method(More)
The peak signal-to-noise ratio (PSNR) is a simple and widely used fidelity measure in the image watermarking. The position of watermarking plays an important role when the tradeoff between robustness and invisibility is considered. In the paper we analyze the mathematical relationship between the embeddable position and the PSNR in the DCT (discrete cosine(More)
Based on the structure and theory of optical-mechanical-electrical automatic ranging system of vehicles, paper has a discussion and research of the architecture and design of auto ranging system with risk estimation and decision making basing on MPC5200, which includes hardware architecture, software architecture and key technology, etc. The system adopts(More)
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