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Digital TV broadcasting network, including digital cable TV, digital territorial TV, and digital satellite TV, has been built and spread out nationwide. Emergency message can be displayed in various forms with digital TV broadcasting network, such as text, picture, audio, and video. In this paper, we propose an emergency broadcasting system using transport stream (TS) to carry emergency message in...
Most approaches for image retrieval are based on the bag-of-visual-word (BoV) representation. However, the BoV model typically ignores the spatial information that is crucial for visual representation. Zhang, et al. [1] proposed an approach to encode spatial information into Bo V using Geometry-preserving Visual Phrases (GVP). They found 2-GVP gives the best results in general, while the performance...
MPEG-2 Transport Stream (TS) is the main transmission mode for digital TV programs. This paper provided a MPEG-2 TS authentication method which can authenticate the validity and integrity of digital television content, prevent the illegal attack. This method is based on digital signature theory and ASN.1 (Abstract Syntax Donation One) syntax. We defined a signature information packetization and transmission...
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