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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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How to convert CMSampleBuffer to std::vector?

I have image stream from my AVCaptureVideoDataOutputSampleBufferDelegate method: - (void)captureOutput:(AVCaptureOutput )captureOutput didOutputSampleBuffer:(CMSampleBufferRef)sampleBuffer fromConnection:(AVCaptureConnection )connection; 
Then I…
Alexander Yakovlev
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Open Alpr cannot load its dependency

Error message: Could not load file or assembly 'openalpr-net, Version=2.3.0.0, Culture=neutral, PublicKeyToken=null' or one of its dependencies. An attempt was made to load a program with an incorrect format. But when I run the alpr.exe by commend…
Franva
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OpenALPR library issue with libpng and google play

I've seen a few recent posts on Google Play rejecting apps with certain versions of libpng. This has tripped up with an update to my app, using the OpenALPR library, which does have an include libopencv_java.so, and have narrowed this down to be…
Diarmuid Ryan
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node-openalpr in a raspberry pi 3 compiles but does not identify plate images

I'm working a project with openalpr and a raspberry pi 3 with node.js. I already compiled OpenAlpr and works from the command line, now I'm trying to recognize a license plate from an image using node-openalpr module and find the next results: Ran…
hector narvaez
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How use openalpr in java project

I want to use openalpr in my java project. What must I include to use the API? What libs must be imported in project properties in Eclipse or Netbeans? I found the solution Download openalpr…
mesutpiskin
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what's the proper way to make openALPR to read plates in different angles?

I'm using openALPR library to read plate licenses but I'm having issues reading the plates in different angles, like below image. My question is: what's the proper way to do that? Image processing to try make the image straight before submitting…
Jack
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License Plate Recognition in React Native

I am trying to implement License Plate Recognition in React Native for the same I got only single npm package react-native-openalpr https://www.npmjs.com/package/react-native-openalpr. I am stuck here because that package is no longer working in…
Rahul Mishra
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how to read this type of JSON file from PHP [Json results from open alpr ]?

I need to know how to extract JSON data like the JSON format posted below to php, Im trying to extract following Json file key value data to a mysql using a php script. Following JSON is from openalpr using alpr on command line exported as json …
iwhd
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How to install npm openlpr in nodejs

I have been trying to install the npm node-openalpr package but i am facing this error.How can i overcome this probblem? > node-openalpr@1.1.1 install D:\My Codes\Thesis\node\node_modules\node-openalpr > node-pre-gyp install --build-from-source…
Bulbul Gulzer
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SyntaxError: Unexpected end of JSON input: OpenALPR using Node and Javascript

When using the try/catch statement for var data declaration, the program will output 'No License Plate Found', even if there is. If the try/catch statement is removed, the program prints perfectly when there is no License Plate in the frame, but…
RO'D
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Moroccan License Plate Recognition (LPR) using OPENALPR, OpenCV and Tesseract

I work currently on my project of end of study: the title of my project is "the detection in real time of the Moroccan license plates of vehicles ( ALPR )", I tried to post this my issue in group ALPR unfortunately ,i received no reply . i…
user13134819
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Post beanstalk queue data to Mssql using python script

Guys I'm currently developing an offline ALPR solution. So far I've used OpenAlpr software running on Ubuntu. By using a python script I found on StackOverlFlow I'm able to read the beanstalk queue data (plate number & meta data) of the ALPR but I…
iwhd
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How to distinguish between different license plates using OpenCV

Currently working on licentiate detection system and need some guidance on how to proceed. I can capture (via video playback) and with the help of an open source library called OpenALPR display the license plates directly to the terminal, now the…
Yusuf Yasin
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Python unable to load OpenALPR, working fine in CLI

I'm trying to install OpenALPR on my Raspberry Pi, with Raspbian 4.19 and Python 3.7. I followed this guide to install OpenAlpr and it works fine when called from the CLI. I'm now trying to make it work in a little python script, but I can't even…
r.m2019
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Unable to initialise OpenALPR

I am trying to integrate OpenALPR with C#. After removing some errors now when I try to execute the program, the program starts, but when the image is selected for results it gives an error message: error initializing openalpr Please suggest a way…
Ali Akif
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