Surveillance camera system
AssigneeFUJIFILM Corporation
InventorYasunori Tanaka
Life of this patent
Estimating the term…
Abstract
A surveillance camera system includes a first camera 5 having an angle of view θ1, a second camera 6 which is a combination of two camera modules 6a, 6b each having an angle of view θ2, a third camera 7 which is a combination of three camera modules 7a, 7b, 7c each having an angle of view θ3, and a local camera 8 having an angle of view θs. The first to third cameras 5 to 7 act as area surveillance cameras to which the optimum shooting distance is set, respectively. The local camera 8 takes a shot of a local area, which is set in a shooting area of the third camera 7, at the narrowest angle of view θs. The respective cameras take a shot individually under automatic exposure control.
Claims13
A surveillance camera system comprising:
- an area surveillance camera focused for a first shooting distance, the area surveillance camera configured to shoot a predetermined shooting area that is determined based on an angle of view;
- and
- a local camera focused for the first shooting distance, the local camera configured to shoot a local area, which is a part of the predetermined shooting area, at an angle of view narrower than that of the area surveillance camera and at a magnification ratio substantially equal to that of the area surveillance camera, wherein:
- the area surveillance camera and the local camera take a shot under individual automatic exposure control, respectively, and
- the area surveillance camera comprises a plurality of camera modules that individually shoot partitioned areas obtained by partitioning the predetermined shooting area into substantially identical areas, and
- the local camera has the angle of view narrower than those of the camera modules, and the local camera shoots the local area which comprises a target of surveillance, the local area being a part of any one of the partitioned areas being shot with any one of the camera modules, at a magnification ratio substantially equal to those of the camera modules, and
- wherein the area surveillance camera and the local camera execute the automatic exposure control so that the target of surveillance is not extremely overexposed or extremely underexposed.
A surveillance camera system comprising:
- a first area surveillance camera focused for a first shooting distance, the first area surveillance camera configured to shoot a predetermined shooting area that is determined based on an angle of view;
- a second area surveillance camera having a focal length different from that of the first area surveillance camera, the second area surveillance camera focused for a second shooting distance different from the first shooting distance, a magnification ratio of the second surveillance camera focused for the second shooting distance being substantially equal to that of the first area surveillance camera focused for the first shooting distance;
- and
- a local camera focused for the first shooting distance, the local camera configured to shoot a local area, which is a part of the predetermined shooting area, at an angle of view narrower than that of the first area surveillance camera and at a magnification ratio substantially equal to that of the area surveillance camera, wherein:
- the first area surveillance camera and the local camera take a shot under individual automatic exposure control, respectively,
- the first area surveillance camera comprises a plurality of camera modules that individually shoot partitioned areas obtained by partitioning the predetermined shooting area into substantially identical areas,
- the first area surveillance camera and the local camera execute the automatic exposure control based on an average metering, respectively, and
- the local camera has the angle of view narrower than those of the camera modules, and the local camera shoots the local area, which is a part of any one of the partitioned areas being shot with any one of the camera modules, at a magnification ratio substantially equal to those of the camera modules.
Dependencies are inferred from the claim text.