A method, includes: obtaining an image, the image having marker images and a background image identifying presence of an object in the background image using a processor and providing a signal for stopping a procedure if the presence of the object is identified. An image processing apparatus, includes: a processor configured for: obtaining an image, the image having marker images and a background image identifying presence of an object in the background image and providing a signal for stopping a procedure if the presence of the object is identified. A computer product having a non-transitory medium storing instructions, an execution of which causes an image processing method to be performed, the method includes: obtaining an image, the image having marker images and a background image identifying presence of an object in the background image and providing a signal for stopping a procedure if the presence of the object is identified.
