我对 Python 还很陌生,并试图编写一种 PiCamera 来获取不同颜色并据此做出反应的方式。我目前对每种颜色的尝试是拍照并检测所涉及的颜色。下面是一些示例代码。
def red_detect():
# initialize the camera and grab a reference to the raw camera capture
rawCapture = PiRGBArray(camera, size=(640, 480))
# allow the camera to warmup
time.sleep(0.1)
# grab an image from the camera
camera.capture(rawCapture, format="bgr")
image = rawCapture.array
# Convert BGR to HSV
hsv = cv2.cvtColor(image, cv2.COLOR_BGR2HSV)
lower_red = np.array([161, 155, 84],np.uint8)
upper_red = np.array([179, 255, 255],np.uint8)
red_mask = cv2.inRange(hsv, lower_red, upper_red)
red = cv2.bitwise_and(image, image, mask=red_mask)
return 255 in cv2.inRange(hsv, lower_red, upper_red)
然后将使用 if 语句评估该代码,例如
if green == True:
但是,我所有的颜色都恢复为 True。我是不是快拍错了?