In this paper, we propose a generalized DCT-domain spatial downscaling scheme to improve the visual quality. We analyze the filtering performances and computational complexities of the proposed scheme and the pixel-domain downscaling schemes. The analyses show that the proposed scheme can reduce the aliasing artifact compared to the existing schemes, while the computational complexity may be increased. We also integrate the proposed decimation scheme into the cascaded DCT-domain transcoder for spatial downscaling of a pre-encoded video into its quarter size. Experiments show the proposed approach can achieve better visual quality than the existing schemes.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    DCT-domain spatial transcoding using generalized DCT decimation


    Contributors:


    Publication date :

    2005-01-01


    Size :

    279317 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



    DCT-Domain Spatial Transcoding using Generalized DCT Decimation

    Lee, Y.-R. / Lin, C.-W. | British Library Conference Proceedings | 2005



    Robust Identification by Using Decimation - Application to Large Flexible Satellite

    Adachi, S. / Sunaga, Y. | British Library Online Contents | 1995


    Octree based decimation algorithm for triangle isosurface using simplified patterns

    Xu, Lei / Wang, Huafeng / Pan, Haixia et al. | British Library Online Contents | 2018


    Real time light-detection and ranging point decimation

    DROSDECK JONATHAN ANDREW | European Patent Office | 2024

    Free access