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import cv2

cap = cv2.VideoCapture(0)

logo = cv2.imread("Picture2.png")
logo = cv2.resize(logo, (100, 100))

logo_gray = cv2.cvtColor(logo, cv2.COLOR_BGR2GRAY)
_, mask = cv2.threshold(logo_gray, 1, 255, cv2.THRESH_BINARY)

frame_width = int(cap.get(cv2.CAP_PROP_FRAME_WIDTH))
frame_height = int(cap.get(cv2.CAP_PROP_FRAME_HEIGHT))

# Tạo VideoWriter để lưu file
fourcc = cv2.VideoWriter_fourcc(*'XVID') 
out = cv2.VideoWriter("WebcamVid.avi", fourcc, 20.0, (frame_width, frame_height))

while True:
    ret, frame = cap.read()
    if not ret:
        break

    h, w = frame.shape[:2]

    x = 10
    y = h - logo.shape[0] - 10

    roi = frame[y:y+logo.shape[0], x:x+logo.shape[1]]

    roi_bg = cv2.bitwise_and(roi, roi, mask=cv2.bitwise_not(mask))
    roi_fg = cv2.bitwise_and(logo, logo, mask=mask)
    dst = cv2.add(roi_bg, roi_fg)
    frame[y:y+logo.shape[0], x:x+logo.shape[1]] = dst

    out.write(frame)

    cv2.imshow("Webcam with TDTU Logo", frame)

    # Nhấn 'q' để thoát
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

cap.release()
out.release()
cv2.destroyAllWindows()