1. Get the size of the image
算子：get_image_size(Image : : : Width, Height)
示例：get_image_size (Image, Width, Height)
Image (input object): the input image variable
Width (output control): output the acquired image width
Height (output control): output the acquired image height
2. Get the type of image
Operator: get_image_type ( Image : : : Type )
示例：get_image_type (Image, Type)
Image (input object): the input image variable
Type (output object): the output image type