摘要
采用频域分析的方法,充分利用图像的相位信息,在对数谱的基础上提出了一种可以使目标位移估计达到亚像素级的方法.这种方法不依赖于图像内容,与以往算法相比不仅精度高,而且易于实现.提出的图像预处理方法提高了图像信噪比,减少了图像的分布噪声在频域中的影响,使得算法更具鲁棒性.
ased on the information of the phase of an image, an estimating method for the displacement of a moving target is presented. This method is independent of the image contents. Comparedwith other conventional methods, it has higher accuracy and the estimating results can reach the subpixel level while its realization is easier. The signal-to-noise ratio is improved and the effect of the distributed noise of the image in the frequency domain is reduced by the pre-processing algorithm proposed.
出处
《华中理工大学学报》
CSCD
北大核心
1996年第2期23-25,共3页
Journal of Huazhong University of Science and Technology
基金
航空航天基础性研究基金
关键词
图像识别
运动估计
亚像素精度
遥感图像
inage recognition
displacement estimation
accuracy of subpixel level
frequency domain analysis