Multi-Modality Medical Image Registration Based on Rapid Algorithm of Mutual Information
Yuan Tian · Journal of Lanzhou Jiaotong University · 2011
The similarity metric mutual information with high precision and stability has been used widely in multi-modality medical image registration,but frequent calculation of mutual information reduces efficiency of registration.Moreover,it is sensitive to the overlap of two images.The experiment with CT/MRI image registration uses normalized mutual information as a metric and decreased the grayscale of mutual information's calculation.The rapid algorithm proves that it also improves efficiency of registration under a certain registration precision.