Effects of Spatial Resolution on Image Registration.
Effects of Spatial Resolution on Image Registration.
复制标题
空间分辨率对图像配准的影响。
DOI：
10.1117/12.2217322
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
Prince,JerryL
中科院分区：
文献类型：
--
作者：
Zhao,Can;Carass,Aaron;Jog,Amod;Prince,JerryL
本文对空间分辨率对图像配准的影响进行了理论分析。基于图像上加性高斯噪声的假设，估计平方差和（SSD）分布的均值和方差。使用这些估计，我们评估对齐图像和未对齐图像的 SSD 分布之间的距离。实验结果表明，通过匹配运动图像和固定图像的分辨率，可以获得更好的图像配准结果。结果与我们对 SSD 的理论分析一致，但也表明它对于互信息也可能有效。
This paper presents a theoretical analysis of the effect of spatial resolution on image registration. Based on the assumption of additive Gaussian noise on the images, the mean and variance of the distribution of the sum of squared differences (SSD) were estimated. Using these estimates, we evaluate a distance between the SSD distributions of aligned images and non-aligned images. The experimental results show that by matching the resolutions of the moving and fixed images one can get a better image registration result. The results agree with our theoretical analysis of SSD, but also suggest that it may be valid for mutual information as well.