Dynamic region growing for aorta segmentation
References https://github.com/InsightSoftwareConsortium/SimpleITKTutorialSPIE2016/blob/master/4_a_SimpleITK_Segmentation.ipynb https://blog.csdn.net/weixin_42834523/article/details/105682711 https://itk.org/Doxygen/html/classitk_1_1ConfidenceConnectedImageFilter.html