说明：  模拟X射线不均匀照射(此处为一边暗,一边亮),生成一幅随机图像,按国家标准计算图像的均匀度,并将这幅图像以RAW格式和DICOM格式保存到硬盘上.
(Simulation of non-uniform X-ray irradiation (in this case the dark side, light side), to generate a random image, according to national standards for the calculation of the evenness of the image and this image in RAW format and DICOM format to your hard disk.)