Halcon 如何把一个region截取出来保存为图像

1 read_image(Image,'monkey')
2 gen_circle(region,200,200,150)
3 reduce_domain(Image,region,Mask)
4 crop_domain(Mask, ImagePart1)
5 write_image(ImagePart1, 'bmp', 0, 'e:/1.bmp')