| 摘要 |
PURPOSE:To make speedy positioning performable, by putting the specified-form flag, varying in both X and Y direction, on a printed circuit board, while finding the slippage with an image pickup device and compensating it. CONSTITUTION:A triangular flag B put on a printed circuit board is written to a picture memory consisting of a one bit picture element memory eisposed in matrix form at a visual field of a camera. And, a central processing unit finds a Y direction slippage value DELTAY from a distance Dpq between both edges p and q of the flag B on a horizontal line HL, another distance DPQ between P and Q at the time of being correctely positioned and weight H, among picture element data. And likewise, it finds an X direction slippage value DELTAX from a distance Drs between (r) and (s) on a vertical like VL, another distance DRS between R and S at a right position and base length W. On the basis of this slippage value, a relative position between the PCB and the camera is compensat ed, thus positioning takes place. Doing like this, speedy position is made perform able.
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