Jozef à korupa, Jürgen Slowack, Stefaan Mys, Peter Lambert,'s Advances in Multimedia Information Processing - PCM 2008: PDF

By Jozef à korupa, Jürgen Slowack, Stefaan Mys, Peter Lambert, Rik Van de Walle (auth.), Yueh-Min Ray Huang, Changsheng Xu, Kuo-Sheng Cheng, Jar-Ferr Kevin Yang, M. N. S. Swamy, Shipeng Li, Jen-Wen Ding (eds.)

ISBN-10: 354089795X

ISBN-13: 9783540897958

ISBN-10: 3540897968

ISBN-13: 9783540897965

This booklet constitutes the refereed complaints of the ninth Pacific Rim convention on Multimedia, PCM 2008, held in Tainan, Taiwan, in December 2008.

The seventy nine revised complete papers and 39 revised poster awarded have been conscientiously reviewed and chosen from 210 submissions. The papers are equipped in topical sections on subsequent iteration video coding ideas, audio processing and category, interactive multimedia structures, advances in H.264/AVC, multimedia networking ideas, complex photograph processing options, video research and its functions, picture detection and type, visible and spatial analyses, multimedia human desktop interfaces, multimedia safety and DRM, complex picture and video processing, multimedia database and retrieval, multimedia administration and authoring, multimedia personalization, multimedia for e-learning, multimedia networking options, multimedia platforms and purposes, complex multimedia ideas, in addition to multimedia processing and analyses.

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Additional info for Advances in Multimedia Information Processing - PCM 2008: 9th Pacific Rim Conference on Multimedia, Tainan, Taiwan, December 9-13, 2008. Proceedings

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7 compares the sum of absolute differences (SAD) between the original frame and the predicted frame generated by the proposed scheme (denoted as “Proposed CPM”) and the original AVS (denoted as AVS) for Coastguard and Bus. As shown in the figure, SAD generated by the proposed scheme is obviously less than that of the original AVS which demonstrates that adding the proposed CPM can provide more precise prediction. 4 . Consequently, the small performance gain shown in Bus should be ascribed to the coding bits used in the motion information of CPM and the suboptimum entropy coding.

Besides the original AVS prediction, the prediction generated by Intra prediction and Inter prediction together with the motion information and reconstructed reference pixels are sent to CPM module. They generate a new prediction to exploit the spatial and temporal correlation jointly. The prediction generated by CPM will be compared with all of the other Intra and Inter modes in terms of RD performance to select a best mode with the minimum RD cost for each MB. After Inter, Intra and combined predictions, the residues of the image are coded using AVS 8×8 block-based transform and quantization.

In order to compare the proposed method and the traditional foveation model, we present the reconstructed frames of ‘bus’ sequence under the same bit rate. The reconstructed frames which are preprocessed by the traditional model and the proposed model are shown in Figure 1. The performance indicates that the proposed model outperforms traditional foveation model in terms of visual quality under similar coding bits. Figure 2 illustrate the curves between SSIM and bit rate of bus sequence. Where the “Propose” curve indicate the effect compressed by the proposed method, and the “Fovea” curve indicate the effect compressed by the traditional method.

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Advances in Multimedia Information Processing - PCM 2008: 9th Pacific Rim Conference on Multimedia, Tainan, Taiwan, December 9-13, 2008. Proceedings by Jozef à korupa, Jürgen Slowack, Stefaan Mys, Peter Lambert, Rik Van de Walle (auth.), Yueh-Min Ray Huang, Changsheng Xu, Kuo-Sheng Cheng, Jar-Ferr Kevin Yang, M. N. S. Swamy, Shipeng Li, Jen-Wen Ding (eds.)


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