reference pipeline witout cracks

This is a 3d phantom generated by actual CT images. It's size is 128*128*12. That is, there are 12 slices of image in this dataset with the resolution of each slice is 128*128. The datatype in this file is unsigned char.It is noted that the model is free from cracks.

本数据集为基于真实CT图像生成的三维体模（3D phantom），尺寸为128×128×12，即共包含12层图像，每层图像的分辨率均为128×128。该文件的数据类型为无符号字符型（unsigned char）。特此说明，该体模无裂纹缺陷。