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Fast mode decision algorithm for inter-layer coding in scalable video coding

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5 Author(s)
Seon-Tae Kim ; S/W Contents Research Lab., ETRI, in Daejeon 305-700, South Korea ; Krishna Reddy Konda ; Chun-Su Park ; Chang-Sik Cho
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Scalable video coding (SVC) is currently developed as an extension of H.264/AVC. In the SVC encoder, an exhaustive search technique is employed to select the best coding mode for each macro block (MB). This technique achieves an optimal trade-off between rate and distortion, but it requires an extremely large encoding time. In this paper, we propose a fast mode decision algorithm for inter-layer coding at the enhancement layer. The proposed algorithm predicts the mode of each MB at the enhancement layer using the modes of a co-located MB and its neighboring MBs at the base layer. The proposed method can achieve a time saving of up to 74% in spatial scalability and 63% in coarse grain quality scalability with negligible loss of quality and bit rate increment.

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IEEE Transactions on Consumer Electronics  (Volume:55 ,  Issue: 3 )