Multi-photosource linear array imaging system and method

Abstract

The invention provides a multi-photosource linear array imaging system and method. The multi-photosource linear array imaging system is used for imaging a detected product at a plurality of angles. The multi-photosource linear array imaging system comprises a plurality of photosoures, a linear array imaging device, a stroboflash control module and an image collecting and processing device. The multi-photosource linear array imaging system adopts the plurality of photosoures to light the detected product in sequence at different angles, adopts the same linear array imaging device to collect images under different lighting conditions, and then extracting lines of the images and jointing the images to obtain the images of the detected product under the different lighting conditions. The device and the method are capable of fully taking the advantages of high speed and high resolution ratio of a linear array detection system, and collecting images in a plurality of lighting manners at a same working station by a single imaging device, thereby greatly saving the cost and lowering the field space requirements.

Description

technical field [0001] The invention relates to the field of machine vision detection, in particular to a multi-light source linear array imaging system and method. Background technique [0002] In the production process of modern enterprises, with the development of the field of machine vision inspection, more and more inspection processes rely on automatic inspection devices instead of manual inspection. [0003] In the current field of machine vision, the area array system has realized stroboscopic control light source image acquisition, that is, an area array camera cooperates with one or more lighting sources, and when the detected workpiece reaches the set position, the system triggers the camera and light source to collect images. If There are multiple light sources. While the camera is collecting continuously, different light sources are lit up synchronously in a specified order, so that multiple images obtained by the same camera with different lighting sources can ...

AI Technical Summary

Problems solved by technology

[0003] In the current field of machine vision, the area array system has realized stroboscopic control light source image acquisition, that is, an area array camera cooperates with one or more lighting sources, and when the detected workpiece reaches the set position, the system triggers the camera and light source to collect images. If There are multiple light sources. While the camera is collecting continuously, different light sources are lit up synchronously in a specified order, so that multiple images obtained by the same camera with different lighting sources can be used; but this technology can only be used in low-speed, low-format, In the low-precision detection environment, it cannot adapt to the increasingly high production efficiency and high-precision detection requirements of modern society

[0004] For the line array system, the current structure is to use one or several line array cameras with a line array light source, that is, the line array camera continuously captures images, and the light source is always on. Although this achieves high speed and high precision, the line array system The cost is expensive and the structure is complicated. Each additional camera station is a test of the market’s ability to bear and the installation space on site, so sometimes a compromise has to be made for this, which affects the detection effect of the system; although there are also 4CCD integrated cameras on the market Line array camera, but the performance and structure of the CCD photosensitive chip is fixed, so the structure of the line array system is still limited, generally speaking, it still stays at the stage of single or multiple cameras for the same lighting method

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