Industrial product three-dimensional shape real-time detection system based on light file single camera

Abstract

The invention discloses an industrial product three-dimensional shape real-time detection system based on a light file single camera and belongs to the field of machine vision. The detection system comprises a light field camera system and a data processing terminal. The light field camera system comprises a high-resolution light field camera, a multi-freedom degree camera support and a camera calibration plate. The data processing terminal comprises a GPU high speed image parallel processing unit and a light field camera depth estimation algorithm. According to the invention, during industrial detection, the light field camera carries out three-dimensional shape real-time detection in each azimuth on a to-be-detected object under the condition of calibration in advance, so product assembly efficiency of an assembly line is improved and defective percentage of the industrial product assembly line is reduced.

Description

technical field [0001] The invention relates to the field of machine vision, in particular to a real-time detection system for three-dimensional appearance of industrial products based on a light field single camera. Background technique [0002] In recent years, with the continuous deepening of the process of Industry 4.0, the importance of machine vision in industrial manufacturing has also increased day by day, and the scope of application has continued to expand. At present, machine vision has been successfully applied to the field of industrial inspection in industrial manufacturing. In traditional industrial inspection, various types of 3D scanners are used to detect 3D dimensions and defects of products on the assembly line. The production of 3D scanners does not rely on a single technology. Various reconstruction technologies have their advantages and disadvantages, and the cost and selling price are also different. At present, there is no universal reconstruction ...

AI Technical Summary

Problems solved by technology

Although the accuracy of the three-coordinate measuring machine is high, it is more expensive and more complicated to operate, especially when the shape of the measured object is more complicated, the measurement accuracy is slower, so it cannot be used in online measurement

3D laser scanning technology can quickly and massively collect spatial point information, and provides a new technical means for quickly establishing a 3D image model of an object, but there are generally high costs (basically above 1 million yuan) and high accuracy. , There is a contradiction between distance measurement and scanning rate, and it is not suitable for precise surfaces, etc.

Although the binocular stereo vision system has a relatively low cost, its accuracy and requirements for shooting conditions are high, and its applicability is not strong

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