| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for securing measurement accuracy, by which factors of fluctuation in accuracy are considered in overall, and the accuracy is secured with high reliability in plural kinds of non-contact type device for measuring three-dimensional shapes, and the measurement accuracy can be easily secured for the plural kinds of non-contact type device for measuring the three-dimensional shapes. SOLUTION: First, the resolution of a CCD camera (sensor) in the longitudinal, lateral and vertical directions is ascertained by the verification using a first standard gauge 36. Furthermore, the measurement accuracy of the sensor in the longitudinal and lateral directions is ascertained using a second standard gauge 42. The measurement accuracy of a third standard gauge 44 measuring the circular arc of a cylinder can be secured as a determined value by the verification using the first standard gauge 36 and the second standard gauge 42. In addition, the degree of errors in the object recognition of the sensor due to the different colors and the measurement accuracy for curved surface are ascertained by the verification using the third standard gauge 44. Then, the general measurement accuracy of the sensor is calculated using the result from the verification, and the accuracy of the non-contact type device for measuring the three-dimensional shape is secured.
|
