Dieu Thanh Nguyen

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In the context of prediction with fractional-pel motion vector resolution it was shown, that aliasing components contained in an image signal are limiting the prediction accuracy obtained by motion compensation. In order to consider aliasing, quantisation and motion estimation errors, camera noise, etc., we analytically developed a two-dimensional (2D)(More)
This paper presents a streaming system using the scalability extension of H.264/AVC. The system provides a congestion control algorithm, which is supported by a channel bandwidth estimation running on the client. It uses retransmission only for packets from the base layer to limit the burden on the congested network. The bandwidth estimation allows the(More)
Standard video compression techniques apply motion-compensated prediction combined with transform coding of the prediction error. In the context of prediction with fractional-pel motion vector resolution it was shown, that aliasing components contained in an image signal are limiting the prediction accuracy obtained by motion compensation. In order to(More)
This paper presents an error concealment method applied to the network abstraction layer (NAL) for the scalability extension of H.264/AVC. The method detects loss of NAL units for each group of picture (GOP) and arranges a valid set of NAL units from the available NAL units. In case that there is more than one possibility to arrange a valid set of NAL(More)
Digital video (DV) is one of the most popular high quality video formats. Some applications benefit from real-time DV streaming. However, the huge data rate of this digital video format brings some challenges to deliver a digital video stream over the Internet or intranet. In this paper, a variable bit rate DV streaming system with TCP-friendly rate control(More)
An efficient algorithm for singular points (core and delta) detection in fingerprint images is proposed. The algorithm is based on an efficient maximum variation in local orientation field calculation method. The method was tested with FVC-2000 fingerprint database and the results were compared visually to the results obtained by human experts. The(More)
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