QR code recognition

1. Experimental purpose

Drive the car to recognize the QR code

2. Experimental path source code

Enter the car system, end the car program, enter "ip (ip is the car's ip): 8888" in the browser, enter the password "yahboom"

Then log in Enter the path of Rider-pi_class/5.AI Visual Recognition Course/5. QR code recognition and run qrcode.ipynb.

3. Experimental phenomenon

After running the source code, you can see that the car can recognize the information of the QR code and display the result of the QR code.

4. Main source code analysis

​x
while(True):
    ret, img = cap.read() 
    img_ROI_gray = cv2.cvtColor(img, cv2.COLOR_BGR2GRAY)
    barcodes = pyzbar.decode(img_ROI_gray) 
    for barcode in barcodes:
        barcodeData = barcode.data.decode("utf-8")
        barcodeType = barcode.type
        text = "{} ({})".format(barcodeData, barcodeType)
        img=cv2AddChineseText(img,text, (10, 30),(0, 255, 0), 30)
        print("[INFO] Found {} barcode: {}".format(barcodeType, barcodeData))
​
    
    b,g,r = cv2.split(img)
    img = cv2.merge((r,g,b))
    imgok = Image.fromarray(img)
    mydisplay.ShowImage(imgok)
​
    r,g,b = cv2.split(img)
    img1 = cv2.merge((b,g,r))
    image_widget.value = bgr8_to_jpeg(img1)
​
    if (cv2.waitKey(1)) == ord('q'):
        break
    if button.press_b():
        break

Through the source code, we can get that the car uses the camera for recognition and displays the recognized QR code results on the car's screen and the computer's screen.