This paper presents a novel approach to dynamic transmission bandwidth allocation for transport of real-time variable-bit-rate video in ATM networks. Video traffic statistics are measured in the frequency domain: The low-frequency signal captures the slow time-variation of consecutive scene changes while the high-frequency signal exhibits the feature of strong frame autocorrelation. Our queuein...

Abstract— In this paper we propose an effective, robust and imperceptible video watermarking algorithm by applying DWT (Discrete Wavelet transform) on video frames. The video frames will be first decomposed using DWT and the binary watermark will be embedded in the wavelet coefficients. The experimental results demonstrate that the propose algorithm can produce watermarked contents in good visu...

the video quality assessment must be adapted to the human visual system, which is why researchers have performed subjective viewing experiments in order to obtain the conditions of encoding of video systems to provide the best quality to the user. the objective of this study is to assess the video quality using image features extraction without using reference video. rmse values and processing ...

Most of the video indexing and retrieval systems suffer from the lack of a comprehensive video model capturing the image semantic richness, the conveyed signal information and the spatial relations between visual entities. To remedy such shortcomings, we present in this paper a video model integrating visual semantics, spatial and signal haracterizations. It relies on an expressive representati...

Most of the video indexing and retrieval systems suffer from the lack of a comprehensive video model capturing the image semantic richness, the conveyed signal information and the spatial relations between visual entities. To remedy such shortcomings, we present in this paper a video model integrating visual semantics, spatial and signal characterizations. It relies on an expressive representat...

Identification and verification of a video clip via its fingerprint find applications in video browsing, database search and security. The video is collapsed into a short fingerprint using a robust hash function based on signal processing operations. We propose two robust hash algorithms for video based on the Discrete Cosine Transform. The robustness and randomness properties of the proposed h...