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Questions tagged [openalpr]

Automatic License Plate Recognition library

OpenALPR is an open source Automatic License Plate Recognition library written in C++ with bindings in C#, Java, Node.js, and Python. The library analyzes images and video streams to identify license plates. The output is the text representation of any license plate characters.

http://www.openalpr.com

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What is the difference between free and paid version of OpenALPR?

recently, I have come across a project that requires license plate recognition, and have found a open-source software named OpenALPR. yet, I am curious about the difference between the free version on github, and the paid version on their official…
Patrick Lo
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Problem installing libpng-dev along with libpng12-dev on Raspberry Pi Zero

I am trying to install OPENALPR on my Pi Zero and I am using the instructions on https://www.reddit.com/r/raspberry_pi/comments/baxwz5/how_to_install_openalpr_on_raspberry_pi/ After I run the following command: sudo apt-get install autoconf automake…
Paulo Borges
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Error when trying to run OpenALPR in python

I installed OpenALPR itself fine and I was able to run it in terminal to get this result: C:\Users\zebsu>"C:\\OpenALPR\\Agent\\bin\\alpr.exe" "C:\\plate.jpg" plate0: 3 results State ID: us-oh (97% confidence) - PZ65BYV confidence: 94.5181 …
Zeb Summerfield
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How to install Classifychars and other OpenAlr Utilites in windows?

I downloaded source files from https://github.com/openalpr/openalpr/releases now in src/misc_utilities I can see classifychar.cpp but it requires: include "opencv2/highgui/highgui.hpp" include "opencv2/imgproc/imgproc.hpp" so I downloaded…
Ahmed Ali
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AttributeError: 'Alpr' object has no attribute 'loaded'

First I downloaded OpenALPR src and binary from here: Release ( src & binary) Extracted src and binary in C:\OpenALPR, afterwards I added C:\OpenALPIR\openalpr_64 to my path (Enviroment Variables -> Path -> Edit -> New) and then I ran follownig…
Danial Ahmed
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why do i get error of alpr even after installing openalpr on my raspberry pi 3?

I'm trying to use openalpr for recognizing number plates of moving vehicles from a video using raspberry pi 3 with jessie os. I have installed tesseract 3,OpenCV3 and Openalpr. I have installed following this link: …
adari.girishkumar
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php exec('alpr') returns an empty array with openALPR installed

I am writing a php script that makes use of openALPR installed on my linux computer. When I type "alpr --version" in the terminal, I get this output alpr version: 2.2.4 But then when I do this in my php script, I get an empty array result. But…
Ndi Cedric
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“Python has stopped working” - openalpr on Windows 10

I'm working with OpenALPR with Python scripts. The input image from argparse arguments, whenever I run from command prompt, it is giving output and displaying a dailogue box with error "python has stopped working" Why it is happening could anyone…
user10351235
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Segmentation fault with OpenALPR

I'm trying to install OpenALPR on Laravel Homestead (Ubuntu 18.04). First I tried The Easiest Way. I'm trying to run: Error opening data file /usr/share/openalpr/runtime_data/ocr/lus.traineddata Please make sure the TESSDATA_PREFIX environment…
J. Doe
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openALPR integration into Appcelerator app via Hyperloop

I'm trying to integrate openALPR iOS module to Titanium app using Hyperloop from here: https://github.com/yasirmturk/openalpr-swift I successfully installed it via cocoapods but now I'm stuck how to use it. I have this code: var openALPR =…
Marian Kucharcik
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Cannot Start OpenALPR Docker Container

I've seen a post similar to mine but mine's a bit different. I feel I maybe doing something wrong. I've created this Dockerfile in a folder. Then in that folder: docker build -t openalpr https://github.com/openalpr/openalpr.git All went well:…
Sylar
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Error while installing OpenALPR on Raspberry PI 3

I have just started using Raspberry PI 3. I'm trying to install an open source library named as OpenALPR on it. It's a library that takes an image of a vehicle's license plate as an argument and returns the text written on it. I've been following…
Gaurav Gilalkar
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Setting up OpenALPR with c++, undefined reference.

I need to integrate OpenALPR library into my c++ program. Unfortunaltely, I can't make linking work. openalpr.lib is in C:\path\to\alpr , alpr.h header in C:\path\to\alpr\include all *.dll files are in catalog with main file. System Windows7,…
Rajju
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QT, undefined reference to `alpr::Alpr::~Alpr()'

I am trying to run OpenALPR on QT. I installed it here. I can test it from terminal successfully. I got the error in the title on QT. Undefined reference error is caused by unlinked library but I add the libopenalpr.so under the path /usr/lib to the…
ffttyy
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OpenALPR: Cannot run train.py for new country licence plates

I'm using Ubuntu 16.04 to run OpenALPR. I installed it and produced font tiles from the TTF font files for my country, but ran into problems using train.py. It's supposed to produce [countrycode].traineddata files, but I get the following errors…
Kaya311
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