问题
I would like to extend the code here to extract the corners of the QCodes.
#!/usr/bin/python
from sys import argv
import zbar
from PIL import Image
if len(argv) < 2: exit(1)
# create a reader
scanner = zbar.ImageScanner()
# configure the reader
scanner.parse_config('enable')
# obtain image data
pil = Image.open(argv[1]).convert('L')
width, height = pil.size
raw = pil.tostring()
# wrap image data
image = zbar.Image(width, height, 'Y800', raw)
# scan the image for barcodes
scanner.scan(image)
# extract results
for symbol in image.symbols:
# do something useful with results
print 'decoded', symbol.type, 'symbol', '"%s"' % symbol.data
# clean up
del(image)
In a previous posting, the author indicates that this is possible "*zBar provides a method to do this in terms of pixel values (Once you know the size in pixel values, you can find it in %**>"
See Detect the size of a QR Code in Python using OpenCV and Zbar )
I referred to the Zbar SDK ( http://zbar.sourceforge.net/api/classzbar_1_1Symbol.html ), and still couldn't figure out how to extract the corners. I'd appreciate it if someone could show me how (to extract the corners using Python).
回答1:
In your loop, try:
topLeftCorners, bottomLeftCorners, bottomRightCorners, topRightCorners = [item for item in symbol.location]
You'll get the 4 corners
Late answer but this can help others Dom
来源:https://stackoverflow.com/questions/23796025/python-code-for-determining-corner-locations-of-a-qr-code-using-zbar