2.5 D visual sensor and parameter measuring method

Abstract

The invention provides a 2.5 D visual sensor and a parameter measurement method. The 2.5 D visual sensor comprises a visual probe and a controller connected with the visual probe; the visual probe comprises a lens, a camera, an area light source, a line laser and an optical filter, and under the control of the controller, the camera acquires images of the whole scene when the area light source andthe line laser are turned off; the camera acquires an image when the area light source is turned on to illuminate the whole scene; the camera acquires an image of the measured target when the line laser is turned on and projected to the surface of the measured target; and the controller processes the images to obtain two-dimensional plane parameters and contour height parameters. According to theinvention, two-dimensional plane parameters of a target can be measured, contour height parameters can also be measured, errors of independent plane parameter measurement and height parameter measurement can be further corrected, and the defects of a traditional two-dimensional visual sensor and a traditional three-dimensional visual sensor are effectively overcome.

Description

technical field [0001] The invention relates to a visual measurement technology, in particular to a 2.5D visual sensor and a parameter measurement method. Background technique [0002] The visual sensor is a sensor based on the principle of visual measurement. Its principle is to obtain the image of the measured target and its scene, realize the measurement of relevant information through data processing, and directly output the final result, similar to the visual function of living things. Due to the unparalleled outstanding advantages of large amounts of information and high intelligence, visual sensors are playing an increasingly important role in various national economic fields, including machinery manufacturing, optical engineering, aerospace, robotics, semiconductor industry, automobile manufacturing, Biomedicine, agricultural health and other fields have become a sharp tool for obtaining multi-parameter information and improving the level of automation and intelligen...

AI Technical Summary

Problems solved by technology

However, the sensor cannot achieve visual measurement

[0008] Therefore, how to realize the detection of plane parameters and a small amount of three-dimensional information in a low-cost and simple way, overcome the inaccurate measurement of two-dimensional vision sensors and the high cost of three-dimensional vision sensors, and then form a new type with functions between two-dimensional The 2.5D vision sensor between the vision sensor and the 3D vision sensor is an actual demand of a real application scenario

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