Surveillance system and surveillance method

A surveillance method using a surveillance system in which a server and a plurality of cameras provided in a surveillance area are communicably connected to each other, the method comprising:

• storing, by the server, in a memory information regarding a processing capability of each of the cameras, information regarding an amount of free resources of each of the cameras, and a plurality of captured images obtained by capturing the surveillance area by each of the cameras,
• determining, by the server, a first one of the cameras having at least a predetermined amount of free resources based on the information regarding the amount of free resources of each of the cameras,
• transmitting, by the server, an instruction to execute a learning process that learns at least one parameter used for detecting at least one object to a first one of the cameras,
• learning, by the first one of the cameras, the at least one parameter used for detecting the at least one object, based on the instruction transmitted from the server,
• transmitting, by the first one of the cameras, the at least one parameter used for detecting the at least one object to the server,
• receiving, by the server, from the first one of the cameras, the at least one parameter used for detecting the at least one object,
• calculating, by the server, based on the information regarding the amount of free resources of each of the cameras, a feedback amount of the at least one parameter used for detecting the at least one object, and
• transmitting, by the server, to a second one of the cameras, data of a parameter corresponding to the feedback amount of the at least one parameter used for detecting the at least one object.