Flaky glass edge defect detection system based on image acquistion
A technology for glass edge and flaw detection, which is applied in image analysis, image data processing, and optical testing of flaws/defects, etc. It can solve the problems of complex work of collecting industrial product images and difficulty in obtaining complete and clear images of glass edges.
Active Publication Date: 2019-12-20
翌视智能科技(上海)有限公司 +1
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Problems solved by technology
Such adjustment steps complicate the acquisition of images of industrial products
[0005] Especially in the detection of edge defects of sheet glass, it is difficult to obtain a complete and clear image of the edge of the glass because the edge of the glass is often narrow and long
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[0032] Clear imaging surface P
[0033] For an image acquisition device, such as a camera, video camera, scanner, etc., it can be known from optical principles that if the physical conditions such as the type and position of optical and electronic components in the image acquisition device are not changed, the distance and range that the camera can clearly image are often fixed. of.
[0034] Such as Figures 1A-1C As shown, the area that can be clearly photographed by the camera 101 is defined as the clear imaging plane P. Generally speaking, the shape of the clear imaging surface P depends on the hardware of the camera 101, especially the shape of the image sensor, Figures 1A-1C The example in FIG. 2 is drawn as a rectangle for illustration only, in fact, the clear imaging surface P can be in any shape. The size of the clear imaging plane P and its distance and angle from the camera 101 are determined by the relative relationship between the lens and the image sensor.
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Abstract
The invention relates to a flaky glass edge defect detection system based on image acquisition. The system comprises a transportation device, a detection camera, a laser emitting device and a processor, wherein the transportation device is used for transporting flaky glass along a transportation straight line on a transportation plane, the detection camera is used for shooting an edge image of theflaky glass, and a clear imaging plane is defined on the detection camera; the laser emitting device is used for emitting lasers, so as to form a laser region, the laser region covers the clear imaging plane; the processor forms data connection with the detection camera, the processor identifies a laser spot in the image shot by the detection camera and marks a position where the laser spot is located as a position of a clear imaging region of the image, and according to image parameters in the clear imaging region, the processor judges whether a defect appears. The system provided by the invention has the beneficial effects that an optical detection system applicable to an industrial production line is provided, the system still can obtain a clear image withou adjusting a spatial position of a to-be-detected object / camera in advance, and the clear image is applied to industrial detection.
Description
technical field [0001] The invention relates to a detection system for edge defects of sheet glass. Background technique [0002] There are high precision requirements for the detection of the surface of industrial products. [0003] When using manual inspection of the surface of industrial products, on the one hand, it is necessary to rely on inspection workers to visually inspect the complete surface of industrial products, which will take a lot of time and energy. On the other hand, the accuracy of manual detection varies with uncertain factors such as workers' experience, vision, and physical strength, and cannot meet the high-precision requirements of industrial production. [0004] In the prior art, images of industrial products are collected by image acquisition devices such as cameras and video cameras, and the collected images are used for detection. However, when collecting images of industrial products through image acquisition devices such as cameras and video ...
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IPC IPC(8): G01N21/89G01N21/896G06T7/00G06T7/13
CPCG01N21/8851G01N21/8903G01N2021/8887
Inventor 张磊王玉国王天雄童磊孙叠
Owner 翌视智能科技(上海)有限公司