| 摘要 |
PURPOSE:To make it possible to perform accurate tridimensional distance measurement, by measuring the amount of the distortion in the picture of each TV camera in advance at every small divided area of each monitoring screen and memorizing the result, and correcting the measuring coordinates of the right and left monitoring screens by the distortion amount of each area. CONSTITUTION:As an object to be picked up, a test pattern 10 having an equal longitudinal and lateral interval is provided, and picture signals of the TV cameras 2 and 3 are displayed on monitors 4 and 5, respectively. Aiming marks 12, which can be arbitrarily moved by an external control circuit 11 and by which position coordinates can be measured, are superimposed on the picture signals of the cameras 2 and 3 and displayed on the screens of the monitors 4 and 5. The aiming marks 12 are aligned on each intersection of the test pattern 10 on both screens of the monitors, and the coordinates of all the inersections are measured. At this time, the screens of the monitors are divided into small areas P11, P12... having the correcting amounts of the distorted pictures which are measured in advance, and the correct coordinates wherein an arbitrary measuring point Lij is corrected by the distortion amount for that part can be obtained. |
