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37 lines
958 B
37 lines
958 B
import cv2
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from pyzbar import pyzbar
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class Read():
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instance = 0
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sid = 0
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def __init__(self,inst):
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self.instance = inst
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def detect(self):
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cam = cv2.VideoCapture(0)
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barcodeData_prev = 0
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while 1:
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ret , img = cam.read()
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gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
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barcode = pyzbar.decode(gray)
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if len(barcode) > 0:
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barcode = barcode[0]
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(x, y, w, h) = barcode.rect
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barcodeData = barcode.data.decode("utf-8")
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barcodeType = barcode.type
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if barcodeData_prev == 0 or barcodeData_prev != barcodeData:
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barcodeData_prev = barcodeData
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self.instance.received(barcodeData)
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continue
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text = "{} ({})".format(barcodeData, barcodeType)
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cv2.putText(img, text, (x, y - 10), cv2.FONT_HERSHEY_SIMPLEX,
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0.5, (255, 0, 0), 2)
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cv2.rectangle(img, (x, y), (x + w, y + h), (255, 0, 0), 2)
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cv2.imshow("a", img)
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if cv2.waitKey(1) & 0xFF == ord('q'):
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break
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cam.release()
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cv2.destroyAllWindows()
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