Abstract: An image captured by a monitoring camera is stored in an image database in a monitoring system center apparatus, and is subsequently transmitted as an entire image to a cellular phone. When a user checks the image displayed on the cellular phone and determines that there is an object that the user desires to display in enlarged form, the user accesses and instructs a WEB page provided by the center apparatus to display an enlarged display menu. When an object to be displayed in enlarged form is selected by the user, image recognition processing is performed by an image recognizing unit in the center apparatus. A partial image including the object to be displayed in enlarged form is extracted, and the partial image is transmitted to the cellular phone.