Fly-simulation visual online detection device and method for surface defects

A detection method and detection device technology, applied in the direction of optical testing flaws/defects, image data processing, instruments, etc.

Active Publication Date: 2012-06-20
慧芯加(苏州)智能科技有限公司
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  • Fly-simulation visual online detection device and method for surface defects
  • Fly-simulation visual online detection device and method for surface defects
  • Fly-simulation visual online detection device and method for surface defects

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Embodiment Construction

[0062] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0063] Such as figure 1 As shown, the fan imitation fly vision online surface defect detection device includes a CCD image sensor part and an embedded image processing unit; wherein, the sensor structure part adopts a multi-CCD image sensor 31 combination device that is arranged in a fan-shaped axis at the same point, and the multi-CCD The image sensors 31 are distributed on a semicircular mounting board 32 , and the signal lines of the multi-CCD image sensors 31 are connected to the embedded image processing unit 34 through the video coaxial cable 33 .

[0064] Such as figure 2 Shown is that the embedded image processing unit of the present invention is with DSP core, is characterized in that video synchronizer [2], is used for coordinating the input of three camera cooperative work and control video signal; Video coder [3], is used for analog video Digit...

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Abstract

The invention discloses a fly-simulation visual online detection device and method for surface defects, belonging to the technical field of industrial visual detection and image processing. According to the invention, the surface defects under a complicated background are detected by combining a common CCD (Charge-coupled Device) image sensor with a surface defect detection algorithm. According to the principle of the fly-simulation visual online detection device, the low contrast between the defects and the background needed by the traditional defect detection algorithm is broken through, the obtained scene images can be qualitatively approximate to compound-eye low-resolution images by simulating a fly compound-eye visual information processing method in lower-resolution and low-contrast scene images, and the accuracy is higher. Meanwhile, aiming at the surface defects static in a scene, the fly-simulation visual online detection device also can discover the existence of the surface defects, therefore reliable information is provided for subsequent treatment.

Description

technical field [0001] The invention belongs to the technical field of industrial vision detection and image processing, in particular to an online surface defect detection device and detection method of fly-like vision. Background technique [0002] In the manufacturing process of copper strip, due to the influence of the harsh, complex and changeable on-site environment, coupled with the reflection and scattering characteristics of the surface of the copper strip itself and the vibration generated by high-speed operation, and the online detection of the metal strip is moving toward The development in the direction of large size, high precision, high speed, and high reliability has caused many problems in the promotion and application of visual inspection technology. Imaging quality is poor in robustness, low in signal-to-noise ratio, weak in defect shape and texture features, and lack of redundant information, which increases the difficulty of image detail analysis and ide...

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Application Information

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IPC IPC(8): G01N21/88G06T7/00
Inventor 张学武李敏张卓梁瑞宇许海燕奚吉周云王岩林善明范新南
Owner 慧芯加(苏州)智能科技有限公司
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