mirror of
https://github.com/opencv/opencv.git
synced 2025-06-07 17:44:04 +08:00
87 lines
3.5 KiB
Python
87 lines
3.5 KiB
Python
# -*- coding: utf-8 -*-
|
|
#!/usr/bin/env python
|
|
'''
|
|
===============================================================================
|
|
QR code detect and decode pipeline.
|
|
===============================================================================
|
|
'''
|
|
import os
|
|
import numpy as np
|
|
import cv2 as cv
|
|
|
|
from tests_common import NewOpenCVTests, unittest
|
|
|
|
class qrcode_detector_test(NewOpenCVTests):
|
|
|
|
def test_detect(self):
|
|
img = cv.imread(os.path.join(self.extraTestDataPath, 'cv/qrcode/link_ocv.jpg'))
|
|
self.assertFalse(img is None)
|
|
detector = cv.QRCodeDetector()
|
|
retval, points = detector.detect(img)
|
|
self.assertTrue(retval)
|
|
self.assertEqual(points.shape, (1, 4, 2))
|
|
|
|
def test_detect_and_decode(self):
|
|
img = cv.imread(os.path.join(self.extraTestDataPath, 'cv/qrcode/link_ocv.jpg'))
|
|
self.assertFalse(img is None)
|
|
detector = cv.QRCodeDetector()
|
|
retval, points, straight_qrcode = detector.detectAndDecode(img)
|
|
self.assertEqual(retval, "https://opencv.org/")
|
|
self.assertEqual(points.shape, (1, 4, 2))
|
|
|
|
def test_detect_multi(self):
|
|
img = cv.imread(os.path.join(self.extraTestDataPath, 'cv/qrcode/multiple/6_qrcodes.png'))
|
|
self.assertFalse(img is None)
|
|
detector = cv.QRCodeDetector()
|
|
retval, points = detector.detectMulti(img)
|
|
self.assertTrue(retval)
|
|
self.assertEqual(points.shape, (6, 4, 2))
|
|
|
|
def test_detect_and_decode_multi(self):
|
|
img = cv.imread(os.path.join(self.extraTestDataPath, 'cv/qrcode/multiple/6_qrcodes.png'))
|
|
self.assertFalse(img is None)
|
|
detector = cv.QRCodeDetector()
|
|
retval, decoded_data, points, straight_qrcode = detector.detectAndDecodeMulti(img)
|
|
self.assertTrue(retval)
|
|
self.assertEqual(len(decoded_data), 6)
|
|
self.assertTrue("TWO STEPS FORWARD" in decoded_data)
|
|
self.assertTrue("EXTRA" in decoded_data)
|
|
self.assertTrue("SKIP" in decoded_data)
|
|
self.assertTrue("STEP FORWARD" in decoded_data)
|
|
self.assertTrue("STEP BACK" in decoded_data)
|
|
self.assertTrue("QUESTION" in decoded_data)
|
|
self.assertEqual(points.shape, (6, 4, 2))
|
|
|
|
def test_decode_non_ascii(self):
|
|
import sys
|
|
if sys.version_info[0] < 3:
|
|
raise unittest.SkipTest('Python 2.x is not supported')
|
|
|
|
img = cv.imread(os.path.join(self.extraTestDataPath, 'cv/qrcode/umlaut.png'))
|
|
self.assertFalse(img is None)
|
|
detector = cv.QRCodeDetector()
|
|
decoded_data, _, _ = detector.detectAndDecode(img)
|
|
self.assertTrue(isinstance(decoded_data, str))
|
|
self.assertTrue("Müllheimstrasse" in decoded_data)
|
|
|
|
def test_kanji(self):
|
|
inp = "こんにちは世界"
|
|
inp_bytes = inp.encode("shift-jis")
|
|
|
|
params = cv.QRCodeEncoder_Params()
|
|
params.mode = cv.QRCodeEncoder_MODE_KANJI
|
|
encoder = cv.QRCodeEncoder_create(params)
|
|
qrcode = encoder.encode(inp_bytes)
|
|
qrcode = cv.resize(qrcode, (0, 0), fx=2, fy=2, interpolation=cv.INTER_NEAREST)
|
|
|
|
detector = cv.QRCodeDetector()
|
|
data, _, _ = detector.detectAndDecodeBytes(qrcode)
|
|
self.assertEqual(data, inp_bytes)
|
|
self.assertEqual(detector.getEncoding(), cv.QRCodeEncoder_ECI_SHIFT_JIS)
|
|
self.assertEqual(data.decode("shift-jis"), inp)
|
|
|
|
_, data, _, _ = detector.detectAndDecodeBytesMulti(qrcode)
|
|
self.assertEqual(data[0], inp_bytes)
|
|
self.assertEqual(detector.getEncoding(0), cv.QRCodeEncoder_ECI_SHIFT_JIS)
|
|
self.assertEqual(data[0].decode("shift-jis"), inp)
|