Patent ID: 8223214

Claim:
A camera system comprising: a camera that captures an image frame with a prescribed exposure interval; a shooting field shifting mechanism that shifts a shooting field of the camera; a shift amount acquiring unit that acquires shift settings of the shooting field shifting mechanism; and a masking processor that masks a masking target within a captured image frame; wherein the masking processor includes: a first position computing unit that computes, based on the shift settings of the shooting field shifting mechanism at a first point in time during the exposure interval, a first relative position of the masking target relative to the shooting field at the first point in time; a second position computing unit that computes, based on the shift settings of the shooting field shifting mechanism beginning at a second point in time following the first point in time during the exposure interval, a second relative position of the masking target relative to the shooting field at the second point in time; and a mask area establishing unit that establishes a single continuous mask area to mask the masking target at both the first relative position and the second relative position on the captured image frame, said mask area including both the first and second relative positions computed by the masking processor.