Quantization step (QS) selection for I-frame has an obvious impact on rate-distortion performance in rate-constrained video coding. An efficient QS selection scheme for I-frame is presented which is based on a balanced bits allocation scheme between I and P frames and a new experimental rate-quantization step (R-Q) model. In the balanced bits allocation scheme, firstly a model on the ratio of bits allocation between I and P frame is derived under the constraint of certain target bit rate; then based on the model, a feasible bits allocation algorithm is proposed by experimental analysis among different target bit rates. The analysis and final simulation results show that compared to the existing methods, the proposed algorithm improves PSNR performance significantly (up to 1.2 dB).


    Zugriff

    Zugriff prüfen

    Verfügbarkeit in meiner Bibliothek prüfen

    Bestellung bei Subito €


    Exportieren, teilen und zitieren



    Titel :

    Efficient quantization step selection scheme for I-frame in rate-constrained video coding


    Beteiligte:
    ShuMin Zhou, (Autor:in) / JinTao Li, (Autor:in) / YongDong Zhang, (Autor:in)


    Erscheinungsdatum :

    01.01.2005


    Format / Umfang :

    219422 byte




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Elektronische Ressource


    Sprache :

    Englisch



    Efficient Quantization Step Selection Scheme for I-Frame in Rate-Constrained Video Coding

    Zhou, S. / Li, J. / Zhang, Y. | British Library Conference Proceedings | 2005


    Rate constrained block matching algorithm for video coding

    Bayazit, U. / Pearlman, W. A. | British Library Online Contents | 1998


    Efficient address vector quantization based image coding scheme [2451-27]

    Dre, C. / Stouraitis, T. / Goutis, C. E. et al. | British Library Conference Proceedings | 1995


    Conditional Entropy-Constrained Vector Quantization of Displaced Frame Difference Subband Signals

    De Garrido, D. P. / Lu, L. / Pearlman, W. A. et al. | British Library Conference Proceedings | 1994


    Adaptive Vector Quantization for Image Coding in an Entropy-Constrained Framework

    Lightstone, M. / Mitra, S. K. / IEEE; Signal Processing Society | British Library Conference Proceedings | 1994