基于相位相关法的全局运动估计算法

提出了一种基于鲁捧统计和相位相关法相结合的全局运动估计算法;由于相位相关法利用图像的功率谱信息,减少了对图像内容的依赖,具有一定的抗噪能力,因此该算法将块匹配法与相位相关相结合来计算图像间的运动矢量场,不仅减少了运算量而且能得到更加准确的矢量场;为了提高模型参数估计精度和运算效率,运用多分辨率鲁棒统计的方法来计算运动估计模型参数;航拍视频图像配准与独立运动检测的仿真结果均验证了算法的有效性。

Global Motion Estimation Algorithm Based on Phase Correlation

A global motion estimation algorithm based on combining robust statistics with phase correlation is proposed.This algorithm calculates motion vector field between images combining block matching with phase correlation,as phase correlation using power information of images which decreases the dependence of images.In order to improve the model parameters estimative accuracy and calculated efficiency using multi-resolution robust statistics is adopted to calculate motion estimation model parameters.Experimental results of both aerial video image registration and independent motion detection show the effectiveness of the algorithm proposed.