Multi-step improved-breaking-off-search motion estimation algorithm with 4:1 search and low-bit resolution, and CMOS motion estimation LSI

摘要

To drastically reduce the power dissipation, P, of a motion estimator LSI, a fast motion estimation (ME) algorithm called the "multi-step improved breaking-off-search (M-IBOS)" algorithm with 4:1 search and low-bit resolution (4 bit / pixel)" has been developed. M-IBOS can improve the processing speed of a full search algorithm by a factor of more than 13, while achieving the same visual quality. A new 0.13-μm CMOS accumulation-type ME circuit for M-IBOS has been designed. P is reduced to 3.35 μW, which is less than 1/790 that of the previously developed 0.13-μm CMOS Wallace-tree ME circuit.