Optical flow can make up this shortcoming, while the high demand of computing has restricted its application in real-time situation.
光流法虽可进一步给出运动场中每个像素位置的运动特性，但它所涉及的计算量庞大，难以直接应用于有实时需求的场合。
From the application view point, this paper systematically analysed a variety of computing methods for multiplication used in real-time control system with microcomputers.
本文从应用的角度，对微型计算机实时控制系统中常用的各种乘法算法进行了较为系统的分析和讨论。
But it needs computing all the data of the image constantly during the iterative course, so it is not suitable for real-time application for its low efficiency.
但是由于其迭代过程需要对所有图像数据反复进行计算，因而其时间效率很低，难以实时应用。
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