CAJ | 학술논문

H ．264采用全搜索模式进行帧间模式选择，给编码器带来了高运算复杂度。论文从运动矢量代价和宏块划分方向的单调关系入手提出了一种快速帧间模式选择算法；从宏块与子宏块进行运动搜索时的运动矢量的相关性入手进行了 UM HexagonS 搜索算法改进。实验表明，在图像质量基本不变的情况下，编码时间平均节省40％以上。
H ．264채용전수색모식진행정간모식선택，급편마기대래료고운산복잡도。논문종운동시량대개화굉괴화분방향적단조관계입수제출료일충쾌속정간모식선택산법；종굉괴여자굉괴진행운동수색시적운동시량적상관성입수진행료 UM HexagonS 수색산법개진。실험표명，재도상질량기본불변적정황하，편마시간평균절성40％이상。
A full searching mode is used for H .264 inter frame mode selection algorithm ,which bring a high computing complexion to the encoder .Inter frame mode selection algorithm is improved based on the fact that there is a monotonic rela-tionship between the motion vector cost and macroblock division direction .Meanwhile ,UM HexagonS algorithm is improved according to the correlation of motion vector of the macroblock and the sub macroblock .The experimental results show that the proposed algorithm can reduce about 40% encoding time with negligible change of the quality of the image .