Not able to detect the barcode attached

[kotasudhakar]

For some reason quagga2 not able to detect the barcode where as online barcode readers such as
https://online-barcode-reader.inliteresearch.com/
https://www.onlinebarcodereader.com/
https://products.aspose.app/barcode/recognize#
were able to detect this perfectly , i guess it is because of the background lines.

[github-actions]

Thank you for filing an issue! Please be patient. :-)

[ericblade]

Thanks for the example! What sort of barcode is it, EAN13? or something else?

[kotasudhakar]

Thanks for the example! What sort of barcode is it, EAN13? or something else?

It is CODE_128 barcode

[ericblade]

Thanks for the info! When I have a chance, I'll add it to the tests, and see what happens

[kotasudhakar]

By any chance did you get to work on this

[kotasudhakar]

And is there a way we can integrate yolo here to improve the detection rate significantly ?

[ericblade]

yolo?

sorry, this got set to the side, and I completely whiffed on it. My apologies.

BTW, using the default settings here: https://serratus.github.io/quaggaJS/examples/file_input.html

was able to detect this barcode exactly.

in fact, using every setting below 1280px resolution, which is broken in the original library, and above 320px, resulted in this working. Are you sure you had code 128 set?

I definitely like this one as a test/example, though, for sure. Shows that the lib does work in some really questionable cases.

[kotasudhakar]

This image containing (code 39 format) barcode gets detected on the https://serratus.github.io/quaggaJS/examples/file_input.html

But getting failed to detect on the quagga2, why?

Please note that if i crop the image containing the barcode only meaning precisely barcode area, this works with quagga2 also, but it should'nt be that way right. wondering why this is the issue with the quagga2 and not with quagga

Settings used -> {"inputStream":{"size":800},"locator":{"patchSize":"medium","halfSample":false},"numOfWorkers":1,"decoder":{"readers":[{"format":"code_39_reader","config":{}}]},"locate":true}, also tried to change the halfSampleto true, locate to false & true(with patchSize ->'small', 'medium'), did not work with quagga2 but working with quagga

@ericblade To make this explaination even simpler, i made a working example demo using quagga(quagga 0.12.1) demonstrating the same. please check this pen using the image above
https://codepen.io/kotasudhakar/pen/wvZQvPe

[ericblade]

hmm. I don't really have any idea on that at the moment, but it's possible that some of the code reorganization has created barely detectable differences.

I'm going to have to plug this into the test suite and give it a run. I appreciate how much you've detailed this, I just hope that I can find the time to check into it soon. If the people I work for detailed their bug reports as well as you have, I'd have a lot more time :-D

[kotasudhakar]

btw, i was able to make this work, but not in a straight forward way. I have binary thresolded with [100,110,120,130,140,150,160,170] one at each time and try to detect the barcode. worked great, but i wish if this thing is also included in the quagga itself as some kind of options

[ericblade]

This sounds interesting -- I don't really understand what you're saying you did, though. Could you explain like I don't understand anything about image processing, because I really don't :-)

It does sound like a filter sort of feature that I've been tossing around in my head, something that should go between the camera input process and the barcode detection process.