Abstract
A B KTA ?@' UVWXYZ[\]^_,>CEF,DEFX`a`b0J)^_.c^ NXde. d^ f*ghi;RKjk0GHlAB,DEFGHmXn U!o UpqorRjk0GHl'jk0GHm'`a`,LMB ^]B 1^ye. D/ ^_d^ N IsAVWXYZ[\ Xf14e.AbstractWe propose an adaptive combination scheme of intra and inter prediction modes, where uni-directional intra prediction, bi-directional intra prediction, and inter prediction method are adaptively selected in an EMB (extended macro block). For each EMB, after all inter blocks have been encoded and decoded, the reconstructed blocks are used as reference data for bi-directional intra prediction of other blocks. Whereas conventional intra coding scheme does not use the right and below side pixels of the current block as reference data, the proposed method uses those for bi-directional intra prediction mode. In this paper, we propose three advanced techniques; (a) filter design for bi-directional prediction, (b) adaptive coding order scheme which increases the chance to use the bi-directional intra prediction mode, (c) modification of syntax to represent coding order. The information for the coding order is informed to the decoder by using the modified syntax structure without adding any additional flag. The simulation results show that the proposed scheme reduces the BD-Rate by 0.5%, on average, compared to KTA. Keyword: H.264/AVC, KTA, Intra/Inter prediction, Extended macroblock, Bi-Intra prediction
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