pylibdmtx | Read Data Matrix barcodes from Python | Math library
kandi X-RAY | pylibdmtx Summary
kandi X-RAY | pylibdmtx Summary
Read Data Matrix barcodes from Python 2 and 3.
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Top functions reviewed by kandi - BETA
- Decode an image
- Return the pixel data of the image
- Decode a region
- Wrapper for dmtxImageCreate
- Context manager for dmtxDecodeDestroy
- Context manager for dmtxDecodeMatrixRegionDestroy
- Context manager for dmtxRegionDestroy
- Create a prototype function
- Load the dmtx library
- Return the libdmtx library name
- Encodes the given data
- Context manager for creating dmtx encoder
- Return the dmtx version
- Decode an image using dmtx
- Return the contents of the README rst file
- Set up setup
pylibdmtx Key Features
pylibdmtx Examples and Code Snippets
Community Discussions
Trending Discussions on pylibdmtx
QUESTION
Question in short:
We have a specific png image, where searching the datamatrix codes on a given location with the help of pylibdmtx library. At that specified location (given xmin, ymin, xmax, ymax coordinates in the code), we crop the image, rescale and send to the library to decode. but getting assertion error from dmtxdecodescheme.c, and program halts. we wish to neglect the error (return "?????" if possible), but try/except not working, and no way to escape.
Details:
This kind of error had never happened before, only on this specific png image, and given specific coordinates & SCALER value. Uploaded the image at: https://easyupload.io/3yioro , because i can't upload to stackoverflow due to size constraints (3.1 Mb is over the 2Mb limit) if i crop or convert image to another extension, error doesn't reproduce. this is really a rare and hard to duplicate error.
here is the simplified code, where you search only 1 given location:
...ANSWER
Answered 2022-Mar-01 at 15:19Your code worked as-is for me. I got this output
Initially I had other problems with libdmtx.(This is an issue with libdmtx I faced and has no issue with your Python code)
I installed libdmtx using condas in win10. But during runtime I got FileNotFoundError: Could not find module 'libdmtx-64.dll'
then I built the library from https://github.com/dmtx/libdmtx and got release mode dmtx.dll. renamed this dll to libdmtx-64.dll and placed in `C:\Users\balu\Miniconda3\Library\bin'.
Note: if QR decoding is your goal, check your old questions I have answered.
QUESTION
I'm packaging a Kivy Application using pyinstaller. The original application works fine, but when running from the dist folder, it fails due to a key error. Specifically, it starts the Kivy application, but then immediately closes due to the key error.
Error Message:
...ANSWER
Answered 2021-Mar-31 at 13:26Can u share your .spec file with me? I had the same problem a couple of weeks ago. I think that you didn't specify your data source.
My .spec file is located in: ../denul2/ My code files (.py/.kv) are located in: ../denul2/project/
Look at this: https://imgur.com/a/pWCKPQ1
edit: Try to also add this: https://imgur.com/a/rGFOMw5
QUESTION
import cv2
import os
import glob
import pandas as pd
from pylibdmtx import pylibdmtx
import xlsxwriter
# co de for scanning
img_dir = "C:\\images" # Enter Directory of all images
data_path = os.path.join(img_dir,'*g')
files = glob.glob(data_path)
data = []
result=[]
for f1 in files:
img = cv2.imread(f1,cv2.IMREAD_UNCHANGED)
gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
ret, thresh = cv2.threshold(gray, 0, 255, cv2.THRESH_BINARY | cv2.THRESH_OTSU)
msg = pylibdmtx.decode(thresh)
print(msg)
data.append(img)
result.append(msg)
print(type(result[0]))
...ANSWER
Answered 2020-Sep-11 at 18:02You need to iterate on the list and retrieve the good properties on each.
QUESTION
I have the image as attached. I tried using the below code and it outputs the correct values for most of the images. But however it takes a long time to decode.
...ANSWER
Answered 2020-Jun-10 at 13:38Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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No vulnerabilities reported
Install pylibdmtx
You can use pylibdmtx like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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