Efficient improvement of side information in GOB-based DVC system

Among the emerging video coding schemes, the effectual solution for the separate-encoding and joint-decoding architecture is the distributed source coding (DSC). In the DSC-based video system, the side information is available in the Wyner-Ziv (WZ) decoder and video reconstruction. Theoretically, th...

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Vydáno v:2012 IEEE International Symposium on Circuits and Systems (ISCAS) s. 1720 - 1723
Hlavní autoři: Wu, Tsung-Che, Hsu, Ji-Hua, Lee, Chang-Ming, Chiang, Jui-Chiu
Médium: Konferenční příspěvek
Jazyk:angličtina
Vydáno: IEEE 01.05.2012
Témata:
Computer architecture
Correlation
correlation noise modeling
Decoding
distributed source coding
Encoding
Interpolation
side information
Silicon
Video coding
Wyner-Ziv theorem
ISBN:9781467302180, 146730218X
ISSN:0271-4302
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Shrnutí:Among the emerging video coding schemes, the effectual solution for the separate-encoding and joint-decoding architecture is the distributed source coding (DSC). In the DSC-based video system, the side information is available in the Wyner-Ziv (WZ) decoder and video reconstruction. Theoretically, the quality of side information (SI), usually referring to the difference between SI and source, dominates the coding efficiency. In order to improve the coding efficiency of DVC with temporal group of blocks, we proposed three SI generations after analyzing the correlation between the SI and original information. In contrast to the traditional improvement in the DVC decoder, the complexity of SI generator was dramatically reduced in our schemes. Experimental results show that the best method can reduce 0.7% bit-rate with less computation and no codec delay compared to the bi-linear interpolation (BLI) method.
ISBN:9781467302180
146730218X
ISSN:0271-4302
DOI:10.1109/ISCAS.2012.6271593