How to read small Data Matrix codes (16 x 16) using Python and opencv?

Asked May 05 '20 at 14:22

Active May 05 '20 at 18:31

Viewed 342 times

I can't decode the 2D data matrix using the pylibdmtx library. It is a small image (16 x 16). The result is always [ ]. Does the size of the data matrix influence decoding in this library?. Can anybody help me ?

from pylibdmtx.pylibdmtx import decode
import cv2
import numpy as np

image  = cv2.imread('./key1.png')
height, width = frame.shape[:2]
decode((frame.tobytes(), width, height))

edited May 05 '20 at 18:31

mapf

1,906
1
14
40

asked May 05 '20 at 14:22

Alex Palma

shouldn't you use "image" instead of "frame"? – Miki May 05 '20 at 14:32
it was a mistake to paste the code. It doesn't work anyway. – Alex Palma May 05 '20 at 14:44
The quality of the image is probably too low. It's hard to spot individual dot, try getting a better quality image and the library should be able to handle it. – Maximilian Peters Jul 29 '20 at 10:36

How to read small Data Matrix codes (16 x 16) using Python and opencv?

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