基于Legendre矩的CT及MR医学图象融合方法

汪家旺; 舒华忠; 罗立民; 葛云; 翁学军

doi:10.11834/jig.20010487

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基于Legendre矩的CT及MR医学图象融合方法
The Way of Medical Image Fusion Usingthe Legendre Orthogonal Moment
2001年6卷第4期页码：369
纸质出版：2001
DOI： 10.11834/jig.20010487
稿件说明：

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汪家旺, 舒华忠, 罗立民, 葛云, 翁学军. 基于Legendre矩的CT及MR医学图象融合方法[J]. 中国图象图形学报, 2001,6(4):369. DOI： 10.11834/jig.20010487.

The Way of Medical Image Fusion Usingthe Legendre Orthogonal Moment[J]. Journal of Image and Graphics, 2001, 6(4): 369. DOI： 10.11834/jig.20010487.

摘要

为了提高CT、MR多模态医学图象配准、融合的精度和速度，提出了基于Legendre矩的CT和MR多模态医学图象配准、融合方法，并运用二维9数据图象的Legendre矩正交性和无冗余性的特点，通过找出CT及MR两种模态医学图象的质心，计算出两图象的比例因子，从而完成了两图象的平移和旋转，并精确地实现了CT和MR两模态图象的配信、融合，还优化了Legendre矩的快速算法和提高了应用Legendre矩配准CT和MR图象的速度。实验表明，利用Legendre矩对CT和MR等多模态图象配准、融合，不失为一种比较直接、简洁的方法；同时，Legendre矩在医学影象诊断、放疗计划系统等方面也具有重要的应用价值。

Abstract

In this paper

we presented the way to register or fuse CT and MR multi-modality image based on the Legendre moment. Because Legendre moment has the merits of orthogonal and minimal information redundancy

by using it

we can find the center of mass of CT and MR images

calculate the scale factor of these images

then the translation and rotation of these images can be performed

these images are registered precisely;Optimizing the Legendre moment's algorithm

we quickened up the registration or fusion of CT and MR images. This method proved to be effective

simple in the registration of multi-modality medical images in our experiment. Legendre moment is also important to the registration and fusion in multi-modality medical image

and in the radiotherapy treatment program system.