Browsing by Author "Tekalp, A. Murat"

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Citation - WoS: 2
Citation - Scopus: 3
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.
Citation - WoS: 1
Citation - Scopus: 2
Rate-visual-distortion optimized extraction with quality layers for scalable coding of stereo videos
(IEEE, 2008) Nükhet Özbek; Murat A. 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 ratedistortion sense [1]. In this paper it is extended to multiview case for scalable coding of stereo videos. Rate-visualdistortion optimized rate allocation among the views is necessary for efficient transport of 3DTV 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 stereo videos. © 2008 IEEE. © 2009 Elsevier B.V. All rights reserved.
Citation - WoS: 1
Citation - Scopus: 2
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.