T he H.264/MPEG-4 Advanced Video Coding standard (H.264/AVC) is the newest video coding standard jointly developed by the ITU-T Video Coding Experts Group (VCEG) and the ISO/IEC Moving Picture Experts Group (MPEG). H.264/AVC has achieved a significant improvement in compression performance compared to prior standards, and it provides a network-friendly representation of the video that addresses...

We propose two H.264 bit rate prediction and selection applications based on features extracted for our blind video quality assessment (VQA) algorithm, Video BLIINDS. We describe the blind VQA algorithm briefly, and we show that is correlates highly with human judgments of quality. We then demonstrate two applications: an H.264 bit rate predictor and an H.264 bit rate selector. Keywords-Video q...

H.264/AVC encoder complexity is mainly due to variable block size in Intra and Inter frames. This makes H.264/AVC very difficult to implement, especially for real time applications and mobile devices. The current technological challenge is to conserve the compression capacity and quality that H.264 offers but reduce the encoding time and, therefore, the processing complexity. This paper applies...

In MPEG-2 to H.264 cascaded transcoder, the transcoding speed is mainly affected by computational complexity of H.264 encoder. Especially, motion estimation module of the encoder costs much time due to multiple motioncompensated prediction modes of H.264. In this paper, in order to speed up the transcoding and achieve good video quality, we propose a new motion vector composition scheme for MPE...

Affiliations a Particle and Interfacial Technology Group, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, B-9000 Gent, Belgium. Fax: +32 (0)9 264 62 42; Tel: +32 (0)9 264 60 03 b NMR and Structure Analysis Unit, Department of Organic Chemistry, Faculty of Sciences, Ghent University, Krijgslaan 281 S4, B-9000 Gent, Belgium. Fax: +32 (0)9 264 49 72 ; Tel:+32 (0)9 264 44 69...

Lumazine synthase from Brucella spp. (BLS) is a highly immunogenic decameric protein. It is possible to insert foreign peptides or proteins at its ten-amino acid termini. These chimeras elicit systemic and oral immunity without adjuvants, which are commonly needed in the formulation of subunit-based vaccines. Here, we show that BLS induces the cross presentation of a covalently attached peptide...