Registration of Double Phases Translated and Rotated Image
Shen Zhen-kang · Infrared Technology · 2007
The image registration takes an important part in image processing.It is a key preprocessing step in many modern image processing and computer vision tasks,and many algorithms and techniques have been proposed in order to resolve the registration problem.A robust double phases hierarchical image registration algorithm is presented which can combine the phase correlation with spectrum cancellation at the range of frequency to achieve high accuracy of subpixel through registration of translated and rotated images.In the first phase,the image rotation can be made using 1D FFT to determine the rotating angle and simplify the movement between images to translation,then to determine integral translated parameter with phase correlation.In the second phase,the spectrum cancellation is used to determine subpixel translated parameters.This algorithm can achieve subpixel accuracy registration even if the aliasing errors from undersampling exist in images.