摘要
利用powell算法进行图像配准的过程中,由于其局部搜索能力强,无需进行梯度计算的优点而被广泛采用,但是在收敛速度和全局搜索能力上仍可提高。步长加速算法通过改变搜索步长可以有效地加快收敛速度,一定程度上提高全局搜索能力,因此将步长加速算法和powell算法进行结合,可以提高powell算法的运算速度。
in the process of image registration using Powell algorithm,because of its strong local search ability,it is widely adopted without the advantage of gradient calculation,but the convergence speed and global search ability can still be improved.The step acceleration algorithm can effectively accelerate the convergence speed by changing the search step,and improve the global search ability to a certain extent.Therefore,combining the step acceleration algorithm with the Powell algorithm can improve the speed of the Powell algorithm.
作者
贾亮
孙成林
JIA Liang;SUN Cheng-lin(School of Electronic and Communication Engineering,Shenyang Aerospace University 110136,China)
出处
《电脑与信息技术》
2019年第1期18-21,共4页
Computer and Information Technology
关键词
POWELL算法
图像配准
步长加速算法
运算速度
powell algorithm
image registration
step-length acceleration algorithm
operation speed
