基于多尺度小波变换的PET影像肿瘤边界的研究

Tumor Boundary Research of PET Images Based on Multi-scale Wavelet Transform

在医学图像三维显示技术中,需要得到单像素的清晰轮廓,为了满足这种需求,在传统的小波边缘检测的基础上,提出了一种新的基于PET影像的边缘算法,它是基于小波变换的模极大值检测边缘的算法。采用模糊算法构造相应的隶属函数,再对得到的极大值做进一步筛选,最终能够得到单像素的边缘。

In order to meet the requirements of the clear single pixel outline for the medical image , a new edge algorithm based on wavelet maximum edge detection algorithm was presented. Firstly, a corresponding subordinate function should be constructed through fuzzy algorithm ;then the obtained maximum values need a further sifting;finally, the edge of the single pixel can be obtained.