Optical ranging system and method

Abstract

An optical ranging system includes an image sensor and a processing unit. The processing unit generates an image to be calculated according to at least one image acquired by the image sensor; wherein different image regions of the image to be calculated correspond to different exposure times, so as to increase the accuracy of distance calculation.

Description

technical field [0001] The present invention relates to a ranging system, and more particularly, to an optical ranging system and method using a multiplex exposure mechanism. Background technique [0002] Optical ranging systems use triangulation to calculate distances to objects. For example, an optical rangefinder system may include a light source and a camera. The light source projects light toward the object to be tested, and the camera receives the reflected light from the object to be tested to form an image frame. When the spatial relationship between the light source and the camera is known, the distance of the object to be measured can be calculated according to triangulation according to the image position of the object in the image frame. [0003] However, when there are multiple objects to be tested at different distances in the space at the same time, the objects to be tested at close distances may be over exposed, and the objects to be tested at long distance...

AI Technical Summary

Problems solved by technology

[0003] However, when there are multiple UUTs with different distances in the space at the same time, the near-distance UUTs may have over exposure, while the far-distance UUTs may have underexposure. ), the calculation accuracy of the optical ranging system may be reduced

In particular, when the exposure of the distant object under test is insufficient, there will be a problem that the object distance of the distant object cannot be calculated

Images