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Laser positioning lamp cross curve image detection method and device

A technology for image detection devices and light crosshairs, which is applied to measuring devices, optical devices, instruments, etc., can solve problems that affect the accuracy of edge detection, slow image processing speed, and thresholds are susceptible to noise interference, etc., to improve image processing Speed, improve anti-interference ability, and facilitate the effect of analysis and processing

Inactive Publication Date: 2014-05-07
SHENZHEN YINO INTELLIGENCE TECH
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Problems solved by technology

[0004] However, in practical applications, due to the interference of background light and other factors, the image has large noise
At this time, if the traditional edge detection method is used to process the entire image, not only the amount of calculation is large, but the image processing speed is slow, and because it is often necessary to select different thresholds, and the selection of thresholds is easily disturbed by noise, it will seriously affect Edge Detection Accuracy

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  • Laser positioning lamp cross curve image detection method and device
  • Laser positioning lamp cross curve image detection method and device
  • Laser positioning lamp cross curve image detection method and device

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Embodiment Construction

[0020] In order to describe the technical content, structural features, achieved goals and effects of the present invention in detail, the following will be described in detail in conjunction with the embodiments and accompanying drawings.

[0021] Please parameter figure 1 , is the crosshair image of the laser positioning lamp, which is the cross-shaped laser line generated by the laser positioning lamp, that is, the object detected by the method and device for detecting the crosshair image of the laser positioning lamp in the present invention.

[0022] see figure 2 , is a structural block diagram of a laser positioning lamp crosshair image detection device according to an embodiment of the present invention. The laser positioning light crosshair image detection device includes an image acquisition module 10 , a binarization module 20 , a thinning processing module 30 , a slope analysis module 40 and a calculation module 50 .

[0023] The image acquisition module 10 is us...

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Abstract

The invention discloses a laser positioning lamp cross curve image detection method. The method includes the steps that laser positioning lamp cross curve image data are acquired through a photoelectric sensor array; the cross curve image data are binarized; binarized images are thinned, and a set (phc) of transverse points of a thinned cross curve and a set (pvc) of longitudinal points of the thinned cross curve are acquired; the slope K of a straight line formed by any two points in the set (phc) of the transverse points and the slope K of a straight line formed by any two points in the set (pvc) of the longitudinal points are calculated, the slopes K of all straight lines are counted, and the slope K1 and the slope K2 which are highest in frequency of occurrence are obtained; the slope K1 and the slope K2 are substituted into the formula k1=tan alpha and the formula k2=tan beta to calculate the horizontal angle alpha and the vertical angle beta of the laser positioning lamp cross curve. The invention further discloses a laser positioning lamp cross curve image detection device. The laser positioning lamp cross curve image detection method has the advantages that detection accuracy, antijamming capability and the detection speed are high.

Description

technical field [0001] The invention relates to the technical field of optical precision measurement and image processing, in particular to a method and device for detecting a crosshair image of a laser positioning lamp. Background technique [0002] In industrial production and engineering practice, it is often necessary to test straightness and twist, so straight line and angle references are needed. Laser has been widely used in many measurement fields due to its good directionality, energy concentration, and strong anti-interference ability. [0003] The crosshair laser beam can be used in occasions that require both straight line and angle references. When the crosshair laser beam is used for straight line and angle references and image processing technology is used, it is necessary to calculate the angle between the center of the crosshair and the horizontal line. For this, edge detection is performed first. At present, there are many edge detection methods, such as ...

Claims

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Application Information

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IPC IPC(8): G01B11/00G01B11/26
Inventor 李强雷国胜
Owner SHENZHEN YINO INTELLIGENCE TECH
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