CAJ | 학술논문

因为高清数字电视对图像质量有严格的要求,所以高清数字电视编码采用了计算十分复杂的高精度运动估计方法,而非快速的简单运动估计方法.这就导致了运动估计在视频编码中占用了很多的计算资源.提出了一种结合不同宏块运动特性的方法,以便自适应地选择高精度运动估计方法或简单运动估计方法.该方法通过改变宏块编码顺序与运动向量预测顺序的关系,在减少70%运算时间的情况下仍能保持与高精度方法相同的搜索精度.
인위고청수자전시대도상질량유엄격적요구,소이고청수자전시편마채용료계산십분복잡적고정도운동고계방법,이비쾌속적간단운동고계방법.저취도치료운동고계재시빈편마중점용료흔다적계산자원.제출료일충결합불동굉괴운동특성적방법,이편자괄응지선택고정도운동고계방법혹간단운동고계방법.해방법통과개변굉괴편마순서여운동향량예측순서적관계,재감소70%운산시간적정황하잉능보지여고정도방법상동적수색정도.
Because of intense requirement of image quality for digital television,high precision motion estimation algorithms were recommended instead of simple motion estimation algorithms.To benefit from both the speed of simple search and the accuracy of high precision search,a new method making use of inter macroblock characteristic was proposed.According to experiments,a reduction of 70% execution time is attained while still maintaining the same accuracy of high precision search.