Fast extraction method of complete image of online pcba board

Abstract

The invention discloses a method for quickly extracting a complete image of an online PCBA board. Due to the large size of many PCBA boards, it is necessary to use a camera with a large shooting angle for shooting. Cameras with larger shooting angles have lower resolution, which can easily reduce the accuracy of post-quality inspection. The detection device adopted in the present invention includes a camera and a box-type light source. The light-emitting surface of the box-type light source faces directly downward. The camera is fixed directly below the box light source. The lens of the camera is pointed towards the conveyor belt directly below. The present invention is as follows: Step 1, collecting template photos; Step 2, collecting complete images of PCAB boards to be detected. The invention can automatically splice and split the photographed PCBA board photos, can adapt to the detection of seamlessly connected PCBA boards, and improves the detection efficiency. The invention can extract the complete image of the PCBA board on the conveyor belt in real time, and the feedback speed is fast.

Description

technical field [0001] The invention belongs to the technical field of image processing, and in particular relates to a method for quickly extracting a complete image of an online PCBA board. Background technique [0002] With the popularity of electronic products and the increase in demand, PCBA boards (finished circuit boards, that is, printed circuit boards with all electronic components installed) are the main components of electronic products, and the production volume is also rising rapidly. In order to ensure the complete functions of electronic products, the detection of PCBA board is indispensable. At present, most small and medium-sized electronic manufacturing companies still complete the inspection of PCBA boards manually. Although some large-scale electronic manufacturing companies use some optical automatic inspection equipment to assist in the inspection of PCBA boards, these devices still need to be manually operated. However, for the huge production volume ...

AI Technical Summary

Problems solved by technology

The camera with a larger shooting angle has a lower resolution, which easily reduces the detection accuracy.

[0004] In addition, in the real-time pipeline dynamic detection system, there may be a situation where multiple PCBA boards are connected together to enter the detection system. How to quickly and accurately separate the photos of two PCBA boards to improve the efficiency of detection is currently a problem. The Great Challenges Facing AOI Systems

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