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A multi-line scan camera image acquisition method, device and fpga platform

An image acquisition and camera technology, which is applied in camera devices, measuring devices, image communication, etc., can solve the problems of complex structure, high cost, high system cost and complexity

Active Publication Date: 2021-03-19
WUHAN JINGCE ELECTRONICS GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In practical applications, foreign original image acquisition cards are mostly used to capture images with line-scan cameras, which is costly and complex in structure
However, one acquisition card can only be used with one camera or even one imaging computer. For the detection of a large product area, multiple acquisition cards and multiple computers are often required, and the system cost and complexity are very high.

Method used

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  • A multi-line scan camera image acquisition method, device and fpga platform
  • A multi-line scan camera image acquisition method, device and fpga platform
  • A multi-line scan camera image acquisition method, device and fpga platform

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A multi-line scan camera image acquisition method, such as figure 1 shown, including:

[0027] Step 1, obtain the effective number of cameras connected to the FPGA platform, and feed back to the upper platform;

[0028] Such as figure 2 As shown in , the FPGA platform monitors the camera connection status of its interface and the upper layer camera configuration quantity and location information. Only the camera whose upper configuration is valid and connected to the FPGA platform at the same time is a valid camera. After obtaining the final effective camera connection status, it will be fed back to the upper layer. Based on the final effective camera connection status, the upper layer decides which cameras to configure and trigger to take images later. The FPGA platform detects the status of each camera. When the camera status changes, it will report the change to the generation platform.

[0029] Step 2, the FPGA platform configures each camera according to the c...

Embodiment 2

[0049] The present invention also provides a multi-line scanning camera image acquisition device, including a camera, an FPGA platform, a memory, a processor, and a computer program stored in the memory and operable on the processor, and the FPGA platform is configured to execute the computer program When implementing the steps of the method described in Embodiment 1.

Embodiment 3

[0051] The present invention also provides an FPGA platform, where a computer program is stored on the FPGA platform, and when the computer program is executed by the FPGA platform, the steps of the method described in the first embodiment are realized.

[0052] The present invention is applicable to the application of multiple line scan cameras scanning and detecting an object at the same time, and has the following advantages: 1) saving cost, reducing the number of imaging computers and imaging cards needed, and reducing single purchase cost and post-processing Power cost. 2) Save time for image acquisition, the parallel processing mechanism of FPGA platform can receive images, store images while doing R, G, B delay compensation, flip images while uploading images to PC, which greatly saves image acquisition time 3 ) is easy to maintain, because there are only multiple cameras + one FPGA imaging platform + one upper computer, the system is simple and easy to maintain.

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Abstract

The invention discloses a multi-line-scanning-camera image collecting method. The multi-line-scanning-camera image collecting method comprises the following steps: acquiring a quantity of effective cameras connected to an FPGA (Field Programmable Gate Array) platform, and feeding back the quantity to an upper platform; configuring each camera by the FPGA platform according to a configuring commandtransmitted by the upper platform; simultaneously triggering each corresponding camera to start scanning by the FPGA platform according to a triggering command; transmitting scanned image data to theFPGA platform by each camera; respectively storing received color components R, G and B in image data to different storage addresses by the FPGA platform; when the weight of the color components R, Gand B of each camera, stored in the FPGA storage, is larger than specified weight, combining the color components R, G and B of each camera and uploading the combined color components to the upper platform. The invention further discloses a multi-line-scanning-camera image collecting device and the FPGA platform. By adopting the multi-line-scanning-camera image collecting method and device and the FPGA platform, the cost is reduced, image taking time is saved, and convenience is brought to maintenance.

Description

technical field [0001] The present invention is mainly used in image capturing and detection applications of multiple line scan cameras, such as liquid crystal screens, PCBs, steel, tobacco, textile glass, printed matter and other appearance inspection industrial fields. Use multiple line scan cameras to scan the same LCD screen. The images of all cameras are collected through the FPGA platform, and the images are output to the upper computer, and then the upper computer calls the relevant software algorithm to perform appearance inspection on the LCD screen. Background technique [0002] The line scan system has a good and wide application in the detection of large format, high precision, and cylindrical objects. Its main application industries are: printed products, large glass, grain color sorting, LCD panel inspection, PCB inspection, steel inspection, tobacco industry, textile industry, etc. The common characteristics of products in these industries are: wide format, f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N21/84G01N21/01G01C11/02H04N1/56
CPCG01C11/02G01N21/01G01N21/84H04N1/56
Inventor 邓标华汪舟欧昌东杨阳
Owner WUHAN JINGCE ELECTRONICS GRP CO LTD
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