System and method for measuring vision of variable optical axis

Abstract

The invention relates to a system and a method for measuring vision of a variable optical axis. The measuring system comprises a substrate, a camera, a rotary prism device and a computer, wherein the computer is connected with the camera and the rotary prism device respectively; the camera is arranged on the substrate through a camera adjusting mechanism; the rotary prism device is fixed on the substrate and aligns to the camera in the axial direction; an imaging plane of the camera and a prism plane of the rotary prism device are parallel to each other; and the rotary prism device comprises a prism capable of rotating in a complete cycle. Compared with the prior art, high-resolution target images can be collected by the camera under various optical axis pointing states respectively by sufficiently utilizing accurate pointing characteristic and wide-field scanning capacity of the rotary prism, the imaging view field and measuring range of the system can be enlarged obviously, relatively high imaging resolution and three-dimensional measurement accuracy are realized, and simultaneously, the integration and economical efficiency of system structure design also can be guaranteed.

Description

technical field [0001] The invention relates to the field of visual measurement, in particular to a variable visual axis visual measurement system and method. Background technique [0002] Visual measurement technology has the principle advantages of non-contact, high precision, strong real-time performance and rich information, and is widely used in the fields of automatic navigation, medical diagnosis, military reconnaissance and human-computer interaction. Especially in the field of advanced equipment manufacturing, visual measurement can provide important assistance and guidance for assembly line processing, automatic assembly, product quality inspection and other links on the industrial site. Traditional monocular vision measurement methods rely on prior information and external constraints, and are usually suitable for defect detection or orientation measurement of planar targets; binocular or multi-eye vision measurement methods have the problem of mutual constraints ...

AI Technical Summary

Problems solved by technology

The common disadvantage of these methods is that the number of boresight points is limited, and all the target images collected under the boresight point share the imaging plane of the detector, which will inevitably reduce the image resolution and limit the measurement range of the system

In addition, the variable boresight visual measurement method using mirror groups faces inevitable difficulties in structural integration, and the variable boresight visual measurement method using diffraction gratings can only meet the measurement requirements of micro-scale three-dimensional targets

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