I want to detect the barcode in the image using the image processing using opencvc++

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I want to detect the barcode in the image using the image processing in Opencv C++,When i tried to detect the barcode image by using the different transformation process such as converting into gray,threshold_binary,blur with these output format taking contour for the image at that time the image is not taking contour correctly.I don't know how to solve that problem.

What I have tried:

With the given image i am converting the process into gray,thresh_binary,gaussian_blur & then by getting this output am taking contour for that output result

findContours(blur, contours, hierarchy, CV_RETR_TREE, CV_CHAIN_APPROX_SIMPLE, Point pt(3,3));

the output of the contour is different from the expected result, i want to draw the barcode rect using the contour draw.So, i don't know how to resolve that problem or i don't know am doing the process way is right.

Posted 27-Dec-16 22:49pm

Member 12624812

Updated 27-Dec-16 23:36pm

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Richard MacCutchan 28-Dec-16 5:22am

I don't know OpenCV, but the issue is just a case of finding the dark and light bars, and comparing the widths of each. Should certainly be a lot simpler that face recognition.

Member 12624812 28-Dec-16 5:29am

Do you know reference link for that??

Richard MacCutchan 28-Dec-16 5:42am

Do you know how to think for yourself?

Look at a barcode, it is just a sequence of dark and light bars. How difficult can it be to create a simple algorithm to examine each one in turn and build up set of values that decode it?

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CPallini · Answer 1 · 2016-12-27T23:36:00

Solution 1

You may find a lot of info on the web just using Google. See, for instance: OpenCV – UPC Barcode Reader Part 1 | Félix Abecassis[^].

Posted 27-Dec-16 23:36pm

CPallini