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Hierarchical quantization indexing for wavelet and wavelet packet image coding
(ELSEVIER SCIENCE BV, 2010-02)
In this paper, we introduce the quantization index hierarchy, which is used for efficient coding of quantized wavelet and wavelet packet coefficients. A hierarchical classification map is defined in each wavelet subband, ...
Decoder side true motion estimation for very low bitrate b-frame coding
In H.264 standard, coding of motion vectors constitutes a significant portion of total bitrate especially at low bitrate regimes. This is because differential coding of motion vectors is inefficient when the bit budget is ...
H.264 vi̇deo kodlamada B-çerçeveler i̇çi̇n kodçözücü tarafında aday devi̇ni̇m vektör seçi̇mi̇
In H.264 standard, because of differential coding of motion vectors, sudden motion changes in object boundaries increase the amount of bits used for coding especially at low bitrate regimes. In this paper, we propose a ...