TY - GEN
T1 - Error resilience for key frames in distributed video coding with rate-distortion optimized mode decision
AU - Wu, Hsin Fang
AU - Lee, Chia-Han
AU - Somayazulu, V. Srinivasa
AU - Chen, Yen Kuang
AU - Chien, Shao Yi
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Distributed video coding (DVC) is a potential solution for distributed video sensors in wireless visual sensor and machine-to-machine (M2M) networks. However, the error resilience schemes have not been fully investigated in literatures. In this paper, we propose several error resilience schemes for key frame transmission of DVC, including resending, refining, and hybrid modes. The resending mode asks the transmitters to resend the lost packets as automatic repeat-request, the refining mode conceals the corrupted key frames by temporal error concealment techniques with considering the characteristics of DVC, and the hybrid mode can adaptively select the better mode packet-by-packet with the proposed rate-distortion optimized mode decision. Experimental results show that the proposed schemes can achieve around 6-dB gain in PSNR compared with a baseline approach with intra error concealment. Furthermore, the hybrid mode can achieve 0.5-dB gain in PSNR for some sequences compared with the better one among the resending and refining modes.
AB - Distributed video coding (DVC) is a potential solution for distributed video sensors in wireless visual sensor and machine-to-machine (M2M) networks. However, the error resilience schemes have not been fully investigated in literatures. In this paper, we propose several error resilience schemes for key frame transmission of DVC, including resending, refining, and hybrid modes. The resending mode asks the transmitters to resend the lost packets as automatic repeat-request, the refining mode conceals the corrupted key frames by temporal error concealment techniques with considering the characteristics of DVC, and the hybrid mode can adaptively select the better mode packet-by-packet with the proposed rate-distortion optimized mode decision. Experimental results show that the proposed schemes can achieve around 6-dB gain in PSNR compared with a baseline approach with intra error concealment. Furthermore, the hybrid mode can achieve 0.5-dB gain in PSNR for some sequences compared with the better one among the resending and refining modes.
UR - http://www.scopus.com/inward/record.url?scp=84907411336&partnerID=8YFLogxK
U2 - 10.1109/ISCAS.2014.6865336
DO - 10.1109/ISCAS.2014.6865336
M3 - Conference contribution
AN - SCOPUS:84907411336
SN - 9781479934324
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
SP - 1118
EP - 1121
BT - 2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 IEEE International Symposium on Circuits and Systems, ISCAS 2014
Y2 - 1 June 2014 through 5 June 2014
ER -