Medical image application: differentiate the MRI image by the image comparison technique
Ching-Liang Su · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2001
This research investigates the techniques using the image subtraction to find the discrepancy between the healthy and illness MRI images. The technique developed in this research moves the healthy MRI image to overlap with the illness MRI image. Then, the healthy MRI image and the illness MRI image are aligned to the same orientation. After the healthy MRI image overlapped with the illness MRI image, the illness MRI image is subtracted from the healthy MRI image. If there is discrepancy in the illness MRI image, after the image subtraction, the discrepancy will remain in the subtracted result. From beginning to end the inspection is done by the machine automatically. There is no further human effort involved. The technique developed in this research can very accurately find the discrepancy of the healthy and illness images. This paper explains the method using the second moment to find the orientations of the MRI images. By the orientations of the MRI images, the healthy MRI image and the illness MRI image can be aligned to the same orientation. The detailed process of image rotation is addressed in this paper.