QR code recognition

1. Purpose of the experiment

Drive the robot dog to recognize the QR code

2. Experimental path source code

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

and log in. Enter the path of cd ~/DOGZILLA_Lite_class/5.AI Visual Recognition Course/05. QR code recognition and run qrcode.ipynb .

3. Experimental Phenomenon

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

4. Main source code analysis

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 robot dog uses the camera for recognition and displays the recognized QR code results on the robot dog's screen and the computer's screen.