Method for measuring surface inclination angle of target position of curved-surface object

Abstract

The invention discloses a method for measuring the surface inclination angle of the target position of a curved-surface object. The method comprises the following implementation steps: determining theto-be-measured target position of the curved-surface object; dynamically imaging the surface of the target position by using optical imaging equipment with an adjustable optical axis angle, a large visual field and a shallow depth of field; and adjusting the optical axis angle of the optical imaging equipment, and recording the optical axis angle beta of the optical imaging equipment as the surface inclination angle of the target position of the curved-surface object when all pixels including the target position in the visual field are imaged clearly simultaneously. The characteristic that the visual field scene is all clear simultaneously if the optical axis is vertical to the cortex during optical imaging is utilized, the angle of the vertical optical axis is determined firstly, then the object surface inclination angle is calculated, the measurement of the surface inclination angle of any curved object target position can be realized and the method has the advantages of accurate angle, easy operation and the like.

Description

technical field [0001] The invention relates to a technology for measuring the inclination angle of a small area on the surface of a regular or irregular curved surface object, in particular to a method for measuring the surface inclination angle of a target position of a curved surface object. Background technique [0002] In industrial processing or scientific measurement, it is sometimes necessary to measure the inclination angle of a position of interest on the surface of an object. If the object to be measured is irregular or the curvature of the position to be measured changes greatly, what needs to be measured is actually the inclination angle of the tangent plane of the target point, that is, the surface of the small area around the target point is regarded as an approximate plane, then the inclination angle of the plane is is the inclination angle of the object at this position. This requires determining the tangent plane of the position according to the surface ex...

AI Technical Summary

Problems solved by technology

[0003] Due to the large curvature change of the position to be measured, the surface of the object can only be regarded as an approximate plane in a small area, which brings difficulties to the low-cost and accurate measurement of the surface inclination of the small target position.

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