Get X and Y coordinates of white dot in a black screen python

Question

Is there a python library to detect the pixel's coordinate of white dots in a black background png image and return a NumPy array of its coordinates

ie.

please review [ask]. question was tagged OpenCV by author, so the author knows about OpenCV. this question simply lacks research effort (searching for answers). perhaps this? https://stackoverflow.com/questions/8076889/how-to-use-opencv-simpleblobdetector or browse the tutorials on https://docs.opencv.org — Christoph Rackwitz, Jan 31 '22 at 11:44

score 2 · Accepted Answer · answered Jan 31 '22 at 09:16

2

You can find white dot by numpy.where. You can try this way:

import numpy as np 
import cv2 

img = cv2.imread('XXWck.png')

x, y, z = np.where(img==(255,255,255))
points = zip(x,y)
print(points)

answered Jan 31 '22 at 09:16

bao.le

Hello Is there any way to get the center pixel than a whole lot of pixel – Jaisal Francis Jan 31 '22 at 11:43

1 Answers1