Patent ID: 8355046

Claim:
An object tracing device comprising: a first picture-input part inputting a picture of an area taken by a first picture-taking device; a second picture-input part inputting a further picture taken by a second picture-taking device of a portion of said area which is narrower than said area; an object-identifying part identifying a plurality of objects in the area; a chronological-information-creating part creating chronological information of each of the plurality of objects including respective positional information and a respective time associated with the respective positional information in the picture of the area; an input guide display for providing a plurality of multiple selection conditions, wherein said plurality of multiple selection conditions are provided in priority order, so that said second picture-taking device moves with an object meeting at least one of said multiple selection conditions with higher priority instead of moving with a further object meeting at least one of said multiple selection conditions with a lower priority; an object selecting part for performing the following steps in the following order: a) causing said second picture-taking device to move with said further object which meets at least one of said multiple selecting conditions which have been selected while i) said further object is in the area taken by said first picture-taking device, and ii) said object is not in the area taken by said first picture taking device; and b) causing said second picture-taking device to move with said object instead of moving with said further object when: i) said further object remains in the area taken by said first picture-taking device, ii) said object enters the area which is taken by said first picture-taking device, and iii) said object meets at least one of said multiple selection conditions which are higher in priority than said at least one of said multiple selection conditions which are met by said further object.