Patent ID: 7161620

Claim:
An image pick-up system for picking up a real object image of an object to be operated together with another image, said system comprising: a camera unit comprising a camera for picking up an image of an object mounted on a moving pedestal via a pan head; calculating means for calculating a positional relationship between the camera and the object; setting means for setting a reference position on a floor surface on which the moving pedestal moves and a reference angle of the moving pedestal and for inputting the reference position and the reference angle to said calculating means; and detection means for detecting a moving amount of the moving pedestal from the reference position, and a rotation angle of the moving pedestal from the reference angle; wherein said calculating means calculates a position and an angle of the camera with respect to the object based on the reference position, the reference angle, the moving amount and the rotation angle of the moving pedestal, and the calculating means transmits data of the position and the angle of the camera with respect to the object to a computer for operating together the real object image of the object taken with the camera and said another image based on the position and the angle of the camera with respect to the object; wherein said detection means detects the moving amount of the moving pedestal by measuring a length of a portion of a wheel of the moving pedestal, which has been brought into contact with the floor surface; wherein the moving pedestal comprises at least three wheels and said detection means includes at least three encoders each for detecting a moving distance of a respective one of the wheels; wherein the moving pedestal further comprises a roller in contact with each of the wheels to be rotated together with the wheel; and wherein the moving distance of each of the wheels is detected based on the number of rotations of the respective roller and a pulse number counted by the respective encoder.