Digital video data can be copied repeatedly without loss of quality. Therefore, copyright protection of video data is a more important issue in digital video delivery networks than it was with analog TV broadcast. One method of copyright protection is the addition of a \watermark" to the video signal which carries information about sender and receiver of the delivered video. Therefore, watermar...

Audio-visual speech recognition leads to significant improvements compared to pure audio recognition especially when the audio signal is corrupted by noise. In this article we investigate the consequences of additional degradations in the video signal on the audio-visual recognition process.. We degrade the images with noise, a JPEG compression, and errors in the localization of the mouth regio...

A video can be mapped into a multidimensional signal in a non-Euclidean space, in a way that translates the more predictable passages of the video into linear sections of the signal. These linear sections can be ltered out by techniques similar to those used for simplifying planar curves. Diierent degrees of simpliication can be selected. We have reened such a technique so that it can make use ...

In this paper, an ontology-driven approach for the semantic analysis of video is proposed. This approach builds on an ontology infrastructure and in particular a multimedia ontology that is based on the notions of Visual Information Object (VIO) and Multimedia Information Object (MMIO). The latter constitute extensions of the Information Object (IO) design pattern, previously proposed for refin...

In this paper, we discuss methods for coding MPEG-4 video to enable better computer vision on the compressed video. This problem is important since the amount of video content being generated from a variety of sources is increasing very rapidly, almost all this video is in compressed form, and computer vision applications such as video analysis, mining and querying running on these videos are b...

1 In this paper, we present a spatio-temporal event based approach to video signal analysis and abstraction employing wavelet transform features. The video signal is assumed to be a sequence of overlapping independent visual components called events, which typically are temporally overlapping compact functions that describe temporal evolution of a given set of the spatial parameters of the vide...

We take advantage of the temporal continuity in an iris video to improve matching performance using signal-level fusion. From multiple frames of an iris video, we create a single average image. Our signal-level fusion method performs better than methods based on single still images, and better than previously published multi-gallery scorefusion methods. We compare our signal fusion method with ...

this study concerns to analyze femininity identity by psychoanalysis approach of lacan. psychoanalysis is certainly one of the most areas of debate within feminist artists. the main question of this research is: “how does video art show the femininity identity?” so, initially we tried to categorize different influential concepts of lacan’s psychoanalysis which is necessary to get to know his at...

A video communication system based on combined source-and channel coding is proposed. The proposed system uses a subband video coder structure in combination with power-constrained channel-optimized vector quantiza-tion (PCCOVQ) to achieve eecient and robust transmission of the video signal over a channel with multidimensional PAM signaling. The side information is protected by using a suucient...

In this paper, we propose a new full-fuzzy video ratecontrol algorithm (RCA) for variable bit rate (VBR) videoapplications. The proposed RCA provides high qualitycompressed video with a low degree computational complexity.By controlling the quantization parameter (QP) on a picturebasis, it produces VBR video bit streams. The proposed RCAhas been implemented on the JM H.264/AVC video codec andth...