基于各向异性扩散的医学图像分水岭分割算法  

Watershed segmentation algorithm for medical image based on anisotropic diffusion filtering

作　　者：陈家新[1] 吴颖[1] 黎蔚[1] 

机构地区：[1]河南科技大学电子信息工程学院,河南洛阳471003

出　　处：《计算机应用》2008年第6期1527-1529,1600,共4页journal of Computer Applications

基　　金：国家自然科学基金资助项目(50571035);河南省科技厅自然科学基金(0411010200)

摘　　要：针对医学图像形态建模过程易产生过分割的问题,提出了一种基于各向异性扩散的分水岭分割算法。该算法首先对原始图像进行自适应各向异性扩散滤波,然后引入多尺度的形态梯度图像作为分水岭变换的参考图像,以突出图像中物体的边界轮廓,平滑具有均匀亮度的区域。最后,定义基于边界平均灰度和面积的区域合并准则,对分割后的区域进一步合并。实验结果表明,该算法能有效抑制过分割,具有较强的抗噪声性能,得到的分割结果可以满足医学图像建模的需要。Although watershed transformation is a powerful tool for image segmentation, it might give rise to oversegmentation. A novel medical image segmentation algorithm based on anisotropic diffusion filtering using watershed transformation was proposed. First, input image was got through adaptive anisotropic diffusion filter, and then, a multi-scale morphological grads image was obtained as the input of watershed so as to give prominence to the contours of the image and smooth the areas with even luminance. Experiments show that the algorithm can restrain the over-segmentation phenomena effectively, thus obtaining good segmentation results.

关 键 词：图像分割 分水岭算法 各向异性扩散 形态学 区域合并 

分 类 号：TP391.41[自动化与计算机技术—计算机应用技术]