This result is different from the result on image sequences formed by visible light . the reason why other approaches fail is discussed . the computational cost of the approach proposed by horn & schunck is estimated and the hardware architecture for implementing it in real time is presented Lucas & kanade算法假定光流在一个小区域内是相同的，实际情况并非如此；然后，对这些结论进行了分析，并对horn & schunck算法的参数选择进行了详细的讨论；分析了horn & schunck算法的运算量，给出了算法实时实现的原理框图，为硬件实现打下了基础。
