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Material falling detection method, device and equipment and storage medium

A detection method and material technology, applied in the field of detection, can solve the problems of detection failure, false detection, inability to separate the material from the background area, etc., and achieve the effect of avoiding false detection, fast detection speed and high accuracy

Active Publication Date: 2019-07-23
SHENZHEN YANMADE TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When the inventor was studying material drop detection, he found that the existing method is based on traditional Blob analysis for material drop detection, which separates the dropped material from the background by binarizing the image, morphological operations and shape selection , and then judge whether there is material falling, which depends on lighting, and is easily affected by lighting changes caused by lighting changes, shadow movement, manipulator movements, etc., resulting in false detection, depending on the shape of the material, and there are many rigid parts on the station , when the background is complex, the material cannot be separated from the background area, resulting in detection failure

Method used

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  • Material falling detection method, device and equipment and storage medium
  • Material falling detection method, device and equipment and storage medium
  • Material falling detection method, device and equipment and storage medium

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Experimental program
Comparison scheme
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Embodiment 1

[0058] Please refer to figure 1 , figure 1 It is a schematic flowchart of a material drop detection method provided in Embodiment 1 of the present invention.

[0059] A method for detecting material falling includes steps S11 to S15, which will be described in detail below.

[0060] Step S11 , acquiring a detection image of the station to be detected.

[0061] In the embodiment of the present invention, step S11 acquires the detection image of the station to be detected, which may be that the camera unit shoots the station to be detected in real time, and the image obtained by the camera unit may also be in the early stage of material drop detection, by The imaging unit stores the image of the station to be inspected in the memory after photographing the station to be inspected, and obtains the inspection image of the station to be inspected from the memory, which is not specifically limited in the present invention.

[0062] Step S12, acquiring the detection area of ​​the ...

Embodiment 2

[0076] On the basis of Embodiment 1, the acquisition of the detection area of ​​the detection image includes:

[0077] inputting the detection image into a pre-established shape matching model to locate the detection area of ​​the detection image;

[0078] When the positioning fails, it is determined that the material is dropped from the station to be detected;

[0079] When the positioning is successful, the detection area of ​​the detection image is acquired.

[0080] In the embodiment of the present invention, the detection image is input into a pre-established shape matching model to locate the detection area of ​​the detection image. When the positioning fails, it is likely that the detection area is blocked by falling materials and cannot be located Out of the detection area, because considering that the obtained detection image and template image are rarely blurred, it can be directly determined that there is material drop and return.

[0081] Further, refer to Figu...

Embodiment 3

[0096] On the basis of Embodiment 1, the calculation of the difference between the detection image and the template image to obtain the difference image includes:

[0097] Projecting and matching the corner points of the detected image with the corner points of the template image to calculate a homography matrix;

[0098] Registering the template image to the detection image by using the homography matrix, and calculating a difference between the detection image and the registered template image to obtain a difference image.

[0099] It should be noted that the template matching method described in Embodiment 2 may not be used to locate the detection area or the neglected area in the map, and the effective area registered by the template image through perspective transformation is the detection area by default, and the ignored The area is empty, and the detection area is directly detected, which is not specifically limited in the present invention.

[0100] Exemplarily, the d...

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Abstract

The invention discloses a material falling detection method, device and equipment and a storage medium. Firstly, obtaining a detection image of a to-be-detected station and a detection area of the detection image; then calculating the difference between the detection image and the template image corresponding to the detection image; obtaining differential images, segmenting the differential image;obtaining the material falling area, when the overlapping area of the material falling area and the detection area of the detection image is higher than the preset threshold value, determining that the material falls from the station to be detected, the accuracy is high, false detection can be avoided, and when there are many rigid parts on the station and the background is complex, the materialcan be separated from the background area.

Description

technical field [0001] The invention relates to the detection field, in particular to a material drop detection method, device, equipment and storage medium. Background technique [0002] With the rapid development of the electronics industry, the demand for FPC (Flexible Printed Circuit, flexible circuit board) is increasing. After the circuit board factory produces FPC flexible circuit board products, it often needs to perform quality inspection on the FPC flexible circuit board. , so as to ensure the quality of the circuit board, the quality inspection of the FPC flexible circuit board is an indispensable link in the electronics industry. In the early stage of testing equipment put into operation, because the electrical module is not stable enough, the FPC flexible circuit board product will often be dropped on the carrier board. At this time, the operator needs to open the cabinet door and take out the product on the carrier board. For circuit board products, when the t...

Claims

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Application Information

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IPC IPC(8): G06T7/00G06T7/11G06T7/136G06T7/12
CPCG06T7/001G06T7/11G06T7/136G06T7/12G06T2207/30141
Inventor 吴黄子桑
Owner SHENZHEN YANMADE TECH CO LTD