我想用 python 读取条形码。我搜索了支持条形码读取并且也支持python 2.7的库,但我没有找到任何东西。
有什么图书馆可以帮助我吗?
另外,如果您知道有关条形码读取的任何教程,请告诉我在哪里可以找到。
(迟到总比不到好...) :Pyzbar https://pypi.org/project/pyzbar/ and OpenCV https://pypi.org/project/opencv-python/应该做你想做的事。
这是我在 Python 3 中使用的代码:
#!/usr/bin/python3
# -*- coding: Utf-8 -*-
from __future__ import print_function
import pyzbar.pyzbar as pyzbar
import numpy as np
import cv2
def decode(im) :
# Find barcodes and QR codes
decodedObjects = pyzbar.decode(im)
# Print results
for obj in decodedObjects:
print('Type : ', obj.type)
print('Data : ', obj.data,'\n')
return decodedObjects
# Display barcode and QR code location
def display(im, decodedObjects):
# Loop over all decoded objects
for decodedObject in decodedObjects:
points = decodedObject.polygon
# If the points do not form a quad, find convex hull
if len(points) > 4 :
hull = cv2.convexHull(np.array([point for point in points], dtype=np.float32))
hull = list(map(tuple, np.squeeze(hull)))
else :
hull = points;
# Number of points in the convex hull
n = len(hull)
# Draw the convext hull
for j in range(0,n):
cv2.line(im, hull[j], hull[ (j+1) % n], (255,0,0), 3)
# Display results
cv2.imshow("Results", im);
cv2.waitKey(0);
# Main
if __name__ == '__main__':
# Read image
im = cv2.imread('zbar-test.jpg')
decodedObjects = decode(im)
display(im, decodedObjects)
您可以在这里找到此代码:https://www.learnopencv.com https://www.learnopencv.com/barcode-and-qr-code-scanner-using-zbar-and-opencv/,并附有解释。
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