图像中的红色坐标

Question

I am unable to get the coordinates of the red point in the following image.

image = cv2.imread('image1.png')
lower_red = np.array([0,0,220])

upper_red = np.array([10,10,255])

mask = cv2.inRange(image, lower_red, upper_red)
coord=cv2.findNonZero(mask)

I am getting error in line 4.

error: OpenCV(4.1.0) C:\projects\opencv-python\opencv\modules\core\src\arithm.cpp:1726: error: (-215:Assertion failed). _src:empty() in function 'cv::inRange'

Answer 1

Enter the absolute path of the image file. It will fix this issue. Later, you can print the coordinates of the red colour by printing value of coord .

When i tried printing coord , It gave me the following output-

[[[211 552]]

 [[212 552]]

 [[213 552]]

 ...

 [[215 586]]

 [[216 586]]

 [[217 586]]]