| 摘要 |
PURPOSE:To enable accurate measurement of positional deviations and an angle of attitude, by a method wherein an image sensor is arranged to cover a square part of an object, located at a reference position, almost at the center of the view thereof and equations of two straight lines orthogonal to each other on an object in a measuring area from an image obtained with the image sensor to perform a computation based on the resulting equations. CONSTITUTION:In a measuring area where positional deviations and an angle of attitude of and object A are measured, an ITV camera or other proper image sensor V1 is arranged to cover the intersection of two sides (straight lines l and m) orthogonal to each other of an rectangular, located at a reference position, almost at the center of the view thereof. It is assumed that the center of the object A is deviated in the position by DELTAx and DELTAy in the x and y axes respectively from the origin O of a coordinate system and inclined by an angle with respect to a reference attitude of the object A0. To measure positional deviations and an angle of attitude, the straight lines l and m is detected as image with the image sensor V1 to determine equations of the two sides.
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