"Machine Learning" is the wrong tool for the job here. Tesseract OCR can do this, using only the Raspberry Pi, at a "good enough" framerate for any real driving situation.
OCR itself is machine learning?
I built a DIY license plate reader with a Raspberry Pi and machine learning
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Re: I built a DIY license plate reader with a Raspberry Pi and machine learning
#42So now medium is straight up not letting people read an article unless they're logged in ... Disgusting.
I use Firefox focus which has no session or cookies stored, and I never has a problem with medium articles. Do they save the read articles locally in normal browsers and block the user after a certain threshold?
Re: I built a DIY license plate reader with a Raspberry Pi and machine learning
#43Surprised by the negativity in the comments. This is an extremely impressive presentation of ability to put together current technologies and get the thing working front start to finish. A+, would hire.
The reason for the negativity is that this demonstrates the "Design by StackOverflow" mentality where the solution is like swatting a fly with a sledgehammer and no real domain knowledge. Plus the author didn't even train the neural nets: it's just a LEGO project. I'd higher this person to be a lab intern, but nothing above that. The fact the author couldn't solve it locally and had to invoke the CLOUD is... laughable. This problem has been solved for over two decades on lesser hardware.
Re: I built a DIY license plate reader with a Raspberry Pi and machine learning
#44Ok, I have a use case for this. If you could figure out how to get it off the cloud and low power, it would be awesome to have one of these on the gates to my house, so when I drive up the plates are automatically recognized and the gates open to my car.
Re: I built a DIY license plate reader with a Raspberry Pi and machine learning
#45So now medium is straight up not letting people read an article unless they're logged in ... Disgusting.
I'm not logged in and it lets me read it. But I probably didn't have a cookie from Medium when i went there.
So try deleting your Medium cookies as a workaround.
Re: I built a DIY license plate reader with a Raspberry Pi and machine learning
#46Ok, I have a use case for this. If you could figure out how to get it off the cloud and low power, it would be awesome to have one of these on the gates to my house, so when I drive up the plates are automatically recognized and the gates open to my car.
I think the problem here is pretty obvious.
Re: I built a DIY license plate reader with a Raspberry Pi and machine learning
#47The video referenced in the blog: https://www.youtube.com/watch?v=gsYEZtecXlA mentions that they used 20 K80 instances to get real time inferencing. That seems a bit excessive IMO for an object detector.
I'm the creator here. Yeah, 20 K80s is a bit excessive. That's because cortex (cortexlabs), which is the ML-model-deployment platform didn't initially have multiprocessing on each of their replicas - so I was bound to using just one CPU per GPU. AWS has instances with 4, 8, 16 vCPUs and so on. Once cortex started supporting gunicorn (still yet unreleased but present on their master branch), I was able to reduce the n…
I believe you may achieve the same result locally using https://github.com/openalpr/openalpr and cut your AWS and cell bills to exactly zero. It has Tesseract and OpenCV inside. Would love to see it as a part two of the article!
Re: I built a DIY license plate reader with a Raspberry Pi and machine learning
#48What are the privacy implications of this? For example, in the EU under GDPR, would you really be allowed to collect information on, for example, license plates, time and location? It seems to me that you could argue that license plates are "personally identifiable information" and collecting this type of data could, with or without intention, mean that you are collecting data on people's whereabouts.
Re: I built a DIY license plate reader with a Raspberry Pi and machine learning
#49Ok, I have a use case for this. If you could figure out how to get it off the cloud and low power, it would be awesome to have one of these on the gates to my house, so when I drive up the plates are automatically recognized and the gates open to my car.
You can buy systems like this already. Here's a video of one being opened with a hand-drawn number plate: https://youtu.be/box6dX44NoU?t=50