Abstract
Multiview video plus depth sequence is considered as an efficient 3D video format for supporting advanced stereoscopic and auto-stereoscopic multiview displays. In order to encode this video format, several modes are commonly employed with rate distortion optimization technique. Specifically, direct mode is an efficient mode to encode homogeneous or stationary regions without encoding any additional motion information. However, in the format, the conventional direct mode causes inaccuracy of motion parameters, i.e., a motion vector and a reference index. Thus, we propose a new method for deriving motion parameters of direct mode, which settles the inaccuracy problem, based on depth information and priority of neighboring blocks determined by their relative position. The proposed direct mode achieves an improvement in coding performance when compared with two state-of-the-art direct modes for multiview video coding. The experimental results show that the proposed method yields average bitrate savings of 4.6%, up to 13.7% in terms of the Bjontegaard Delta metric.
| Original language | English |
|---|---|
| Pages (from-to) | 571-578 |
| Number of pages | 8 |
| Journal | Signal Processing: Image Communication |
| Volume | 27 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2012 Jul 1 |
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All Science Journal Classification (ASJC) codes
- Software
- Signal Processing
- Computer Vision and Pattern Recognition
- Electrical and Electronic Engineering
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Depth-based direct mode for multiview video coding. / Ryu, Seungchul; Sohn, Kwanghoon.
In: Signal Processing: Image Communication, Vol. 27, No. 6, 01.07.2012, p. 571-578.Research output: Contribution to journal › Article
TY - JOUR
T1 - Depth-based direct mode for multiview video coding
AU - Ryu, Seungchul
AU - Sohn, Kwanghoon
PY - 2012/7/1
Y1 - 2012/7/1
N2 - Multiview video plus depth sequence is considered as an efficient 3D video format for supporting advanced stereoscopic and auto-stereoscopic multiview displays. In order to encode this video format, several modes are commonly employed with rate distortion optimization technique. Specifically, direct mode is an efficient mode to encode homogeneous or stationary regions without encoding any additional motion information. However, in the format, the conventional direct mode causes inaccuracy of motion parameters, i.e., a motion vector and a reference index. Thus, we propose a new method for deriving motion parameters of direct mode, which settles the inaccuracy problem, based on depth information and priority of neighboring blocks determined by their relative position. The proposed direct mode achieves an improvement in coding performance when compared with two state-of-the-art direct modes for multiview video coding. The experimental results show that the proposed method yields average bitrate savings of 4.6%, up to 13.7% in terms of the Bjontegaard Delta metric.
AB - Multiview video plus depth sequence is considered as an efficient 3D video format for supporting advanced stereoscopic and auto-stereoscopic multiview displays. In order to encode this video format, several modes are commonly employed with rate distortion optimization technique. Specifically, direct mode is an efficient mode to encode homogeneous or stationary regions without encoding any additional motion information. However, in the format, the conventional direct mode causes inaccuracy of motion parameters, i.e., a motion vector and a reference index. Thus, we propose a new method for deriving motion parameters of direct mode, which settles the inaccuracy problem, based on depth information and priority of neighboring blocks determined by their relative position. The proposed direct mode achieves an improvement in coding performance when compared with two state-of-the-art direct modes for multiview video coding. The experimental results show that the proposed method yields average bitrate savings of 4.6%, up to 13.7% in terms of the Bjontegaard Delta metric.
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U2 - 10.1016/j.image.2012.03.004
DO - 10.1016/j.image.2012.03.004
M3 - Article
VL - 27
SP - 571
EP - 578
JO - Signal Processing: Image Communication
JF - Signal Processing: Image Communication
SN - 0923-5965
IS - 6
ER -