Scopus İndeksli Yayınlar Koleksiyonu

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Browsing Scopus İndeksli Yayınlar Koleksiyonu by Author "A. Murat Tekalp"

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    QUALITY LAYERS IN SCALABLE MULTI-VIEW VIDEO CODING
    (IEEE, 2009) Nukhet Ozbek; A. Murat Tekalp; Tekalp, A. Murat; Ozbek, Nukhet
    The Quality Layers concept is proposed and adopted in the JSVM in order to ensure an optimal adaptation in a rate-distortion sense [1]. In this paper it is extended to multi-view case for scalable coding of multi-view videos (MVV). Rate-visual-distortion optimized rate allocation among the views is necessary for efficient transport of multi-view data over the Internet. This paper addresses a standard compatible approach to solve the problem. Experimental results are presented that demonstrate the effectiveness of the proposed method for several multi-view videos.
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    VITERBI-LIKE JOINT OPTIMIZATION OF STEREO EXTRACTION FOR ON-LINE RATE ADAPTATION IN SCALABLE MULTIVIEW VIDEO CODING
    (IEEE, 2010) Nukhet Ozbek; A. Murat Tekalp; Tekalp, A. Murat; Özbek, Nükhet
    The concept of Quality Layers (QL) has been adopted in the SVC standard in order to ensure optimal rate adaptation of pre-coded video in the rate-distortion sense [1]. We have previously extended QL to multiview scalable video for efficient transport of 3DTV over the Internet [2]. However it is not possible to use the QL method in applications that require real-time encoding since priority determination process assumes the availability of the whole stereo video sequence. In this work a Viterbi-like on-line joint optimization of right and left view rate-adaptation is proposed for real-time scalable stereo video coding (with one GoP delay). We assume that the encoder/extractor is aware of the available dynamic network bandwidth in order to perform rate-distortion optimized MGS layer selection for each GoP. Experimental results show that the performance of proposed on-line method is comparable to that of QL that would require the whole stereo sequence.