Yiqing Huang Qin Liu Takeshi Ikenaga Macroblock Feature Based Complexity Reduction for H.264/AVC Motion Estimation. 2934-2944 2008 91-A IEICE Transactions 10 http://dx.doi.org/10.1093/ietfec/e91-a.10.2934 db/journals/ieicet/ieicet91a.html#HuangLI08