114 questions
-1
votes
0
answers
51
views
Detect license plate using matlab [closed]
I'd like to detect license plates in an image using matlab where many plates are neatly arranged in cols and rows, which are similar to the following one:
(Download from https://www.ksl.com/article/...
- 1
0
votes
0
answers
30
views
Not geting detection from loaded anpr model
I am new to this tensor-rt concepts so I will explain I have been doing.
I am loading anpr model and it is been loadede.The detection is happening on the given source (image/video) but bounding box is ...
0
votes
0
answers
268
views
How to capture car license plate by using HIKVISION ISAPI iDS-TCM203-A camera
A am trying to get the car license plate Hikvision iDS-TCM203-A by using ISAPI. The camera admin panel allow you to recognize plate number by using the next button
The problem is I need to get that ...
- 1,421
0
votes
0
answers
17
views
How to Improve Character Reading of License Plates Using OpenALPR?
everyone!
I am using OpenALPR to detect and read vehicle license plates in my Python project. The tool has proven to be very effective in identifying the plates, but the character reading still leaves ...
- 1
1
vote
0
answers
59
views
Extract text from processed image
I'm trying to extract text from a croped image of any EU license plate. I've tried using easyocr but the results is to inaccurate for me to use. I have trained a YOLOV8 model to detect the license ...
- 25
1
vote
0
answers
60
views
Extra items while segmenting characters in license plate
I'm working on a license plate detection project which is mostly for educational purposes.
I have gone through some process to locate the license plate and applied perspective transform upon the ...
- 164
-2
votes
1
answer
123
views
Running multiple processes in parallel to process frames of IP Cameras independently in Python
I am developing a Real Time License Plate Recognition System using YOLOv7 and Python. License plate recognition is done in two stage, using two YOLOv7 models, each of them working perfect.
In this ...
- 1
0
votes
2
answers
273
views
How to use OpenCV to black out everything in an image except for license plate letters?
I'm trying to create a program that turns everything in an image black, except for the letters in a license plate area. I'm not sure where to start with this. I know I can use OpenCV in Python to load ...
user20983853
1
vote
2
answers
497
views
Trouble with Character Detection in License Plate Recognition Using OpenCV and Tesseract OCR in Python
I'm working on a license plate recognition system in Python using OpenCV for image processing and Tesseract OCR for character recognition. I've written a function to process the image of the license ...
user20983853
0
votes
2
answers
806
views
Advice on preprocessing steps for edge detection on license plate images
I am currently working on a university project for which I want to explore different computer vision techniques. My goal is to do automatic number plate recognition (ALPR) on chinese license plates. ...
2
votes
0
answers
729
views
Failed to load image Python extension : torchvision
I have a python project base on computer vision, I want to create .exe file.
**I have successfully created .exe file but at the time of running .exe file it's not load image of live camera.
**
2023-12-...
- 49
0
votes
0
answers
125
views
Detect the white background license plate region using opencv(Edge Detection, Contour Detection)
I want to detect the white number plate region using contour detection and edge detection using opencv
I have tried a variety of solutions. These work for sharp images but don't work for low res ...
- 121
0
votes
1
answer
309
views
Multiple Image Capture Issue for License Plate Detection and Storage in Computer Vision Project
I am currently working on a project in Computer Vision that involves detecting license plates of vehicles, capturing them, and storing them in my folder. I have coded it so that when the license plate ...
- 3
0
votes
0
answers
178
views
Handling Image Preprocessing and Binarization for ALPR under Various Conditions
I've been developing an Automatic License Plate Recognition (ALPR) system. I've successfully implemented the license plate detection using YOLOv8 and am now moving onto the recognition part.
My ...
0
votes
1
answer
143
views
How to make ANPR detection faster by running it on a separate thread from video playback in Python using YOLO [closed]
How to play the input video smoothly while doing ANPR on that video using YOLO
I am developing a ANPR solution and the solution need to be work on real time . The detection of number plate , ...
- 25
0
votes
1
answer
538
views
Hikvision DeepView get number plate error on firmware 5.5.8
I successfully get a number from the Hikvision camera(model iDS-2CD7A26G0/P-IZHS), the answers from this topic helped me. But this solution works for cameras with firmware 5.5.130.
I also have ...
0
votes
1
answer
470
views
Device Busy Error while fetching number plate information using ISAPI Hikvision
I am unable to fetch the number plate info from hikvision video center. I want to access it using the API.
I am getting the response as shown below while fetching the number plate info of vehicle from ...
- 1
0
votes
0
answers
137
views
How to capture the time when the program detects the car plate and capture the time when the car plates leaves the camera's view in python cv2 ocr?
So basically I'm making this program that detects car plates from a camera. I want to write to a excel file the correct time that the camera detects the car plate in hh:mm:ss format and the time that ...
- 11
0
votes
2
answers
837
views
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 ...
- 16.7k
0
votes
1
answer
517
views
license plate number detection failed using opencv and pytesseract
I was just learning license plate number detection from the following link:
Tutorial Link
`My code:
import cv2
import imutils
import pytesseract
pytesseract.pytesseract.tesseract_cmd = '/usr/bin/...
3
votes
0
answers
1k
views
EMGU CV prepare image for OCR
I am new to Open CV and am working on a ALPR solution based on violation images from multiple cameras. In most cases I am able to extract the text from the plate and run OCR however if the image ...
- 181
1
vote
1
answer
751
views
How to use image OCR for videos?
Currently I am working on automatic number plate recognition system. I have used yolov7 for number plate detection and Text detection facility from Google vision API. I have tested the whole system ...
- 89
-1
votes
2
answers
2k
views
Python: How do I extract a String value out of a JSON File retrieved by an API
I am programing an ALPR system and I am using the OpenALPR API to extract a license plate number from a picture. The default Python code to access the service looks like this:
import base64
import ...
- 11
0
votes
1
answer
3k
views
Python Tesseract License Plate Recognition
I'm a programmer, but i have no prior experience with Python or any of its libraries, or even OCR/ALPR as a whole. I have a script that i made (basically copying and paste other scripts for all over ...
- 145
14
votes
1
answer
18k
views
sentencepiece library is not being installed in the system
While using pip install tf-models-official I found the following problem while the library is getting installed:-
Collecting tf-models-official
Using cached tf_models_official-2.8.0-py2.py3-none-any....
- 643
1
vote
2
answers
2k
views
ANPR events with picture Hikvision Node
I have subscrived to the events of a Hikvision camera doing a get request to /ISAPI/Event/notification/alertStream. I am interested in ANPR events, this type of events return a multipart response ...
-4
votes
1
answer
1k
views
Trying to read these plates using OCR but they are blurry. Where do I start? [closed]
Hi I am a student doing research in my university. This is my first time using computer vision (openCV) and I am fairly new to image preprocessing. I have these images of License Plates and I would ...
2
votes
3
answers
4k
views
How to get Hikvision DeepinViews license plate number from URL?
I cant find the solution anywhere and mine doesn't seem to work.
I just want to see the last plate string in the browser,or the few last plates,doesn't matter.
http://login:[email protected]/ISAPI/...
- 145
0
votes
0
answers
780
views
mask after finding shape's contour
I'm trying to write ANPR project in nodejs.
I managed to draw the contours around the license plate, but now I want to mask it.
this is what I got now (just without the text):
i want to mask it like ...
- 13
1
vote
2
answers
6k
views
How to get clean output from easyocr
This is from a opencv+easyocr number plate recognition script opencv crops the image to number plate and gives,clean great output to the easyocr. but what are these bunch of numbers its reading
result ...
1
vote
0
answers
148
views
How to detect the number plate with the most black pixels. If there is another method pls comment
Im trying to detect the ROI with the most black pixels for the license plate
Below are the code on the number plate. It is based of the question of How to recognize vehicle license / number plate (...
- 11
2
votes
0
answers
526
views
Running openalpr using python in windows
I created an environment and installed openalpr using pip install openalpr followed by downloading the openalpr from https://github.com/openalpr/openalpr/releases and installing python binding using ...
-1
votes
1
answer
58
views
ALPR provider for Xillinx
I'm looking into doing some ALPR(Automatic License Plate Recognition) project and I see that some ALPR providers supports Raspherry Pi and Jetson devices. Does any support Xilinx
0
votes
1
answer
247
views
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 ...
- 11
2
votes
1
answer
3k
views
Get plates from Hikvision LPR camera (returning only the last 20 plates) How to retrieve more?
I want to retrieving plates from LPR Hikvision camera but xml file returns only last 20 plates. Someone can help me to define correctly xml parameters to retrieve more registries?
POST URL: .../...
- 31
3
votes
0
answers
782
views
EmguCV, Xamarin Forms, C#, ALPR (License Plate Recognition from Smartphone Camera)
Please, I need help with EmguCV ALPR, C#, Xamarin Forms. There are some sample on the web for ALPR, but these require that you take a picture and load it in the the app.
What I am looking for is to ...
- 114
1
vote
0
answers
671
views
OCR in pytorch/keras with LPRNet and CTCLoss doesn't converge
I implemented LPRNet from this paper in keras and then in pytorch. For pytorch was used this code as example. It didn't converge in any version. Loss starts at 30 and goes to 27 even after 150000 ...
- 87
0
votes
1
answer
255
views
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 ...
- 13
1
vote
1
answer
705
views
SyntaxError: Unexpected end of JSON input: ALPR using Node and Javascript
The program prints perfectly when there is no License Plate in the frame, but when there is, I get the SyntaxError. Node.js and OpenALPR is installed. Photos are successfully being taken also.
const ...
- 13
0
votes
0
answers
106
views
SyntaxError: Unexpected end of JSON input: ALPR
The program prints perfectly when there is no License Plate in the frame, but when there is, I get the SyntaxError. Node.js and OpenALPR is installed. Photos are successfully being taken also.
const ...
- 13
1
vote
2
answers
716
views
can't recognize correctly license plate (Python, OpenCv, Tesseract)
I'm trying to recognize a license plate but got error such as wrong/not reading the character
Here's a visualization of each step:
Obtained mask from color thresholding + morph closing
Filter for ...
- 41
0
votes
1
answer
326
views
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 ...
- 11
2
votes
2
answers
7k
views
How to increase the speed of object detection using YOLO in C#.net
I want to detect License Plate region by YOLO V3. I've used darknet to create Weights for this purpose.
After training a weight file was created. The size of this file was 234 MB and I used darknet53....
- 55
0
votes
1
answer
356
views
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 ...
- 87
0
votes
1
answer
2k
views
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 ...
- 1
0
votes
1
answer
73
views
Different types of augmentations to be used for APR?
I am trying to do automatic number plate recognition but I have very few data. In order to increase the data, I tried translation, rotation and addition of noise. Can someone suggest me some other ...
- 482
1
vote
1
answer
117
views
How to show warning when item in json cannot be detected using C#
I'm making a license plate recognition system using USB camera. The camera will scan a license plate number and show it's detail on label. But if the camera didn't scan/detect any license plate, i ...
- 25
-1
votes
1
answer
389
views
How to get date for every image captured in folder using C#
I'm doing a license plate recognition system. I have set up my camera to capture image every 10 seconds and stored it in a folder. May I know how to get or capture the date and time and show it in a ...
- 25
1
vote
0
answers
548
views
Element 0 value is unsupported
Below is my code which i took it from github and modifying according to my need, it is showing me an error at the line print(characters) when i am trying to take the characters as string in the ...
- 13
1
vote
0
answers
473
views
Reading Philippine License Plate (OCR or ANPR)
I need to read the a license plate issued in the Philippines
I tried GooglePlayServices.Vision [TextRecognizer] but it is giving me inaccurate results.
I also tried some sample ANPR apps but the ...
- 227