以下是基于OpenMV的Python程序：

import OpenMV library

import openmv

Initialize camera and find the target with color difference

camera = openmv.mv()
img = camera.capture() # capture an image from the camera
blobs = img.find_blobs([(0, 0, 0), (255, 255, 255)], pixels_threshold=100, area_threshold=100) # find blobs of colors between black and white

# Print out the coordinates of each target found in the image and its order number
for blob in blobs:

x_coordinate = blob[0]   # get x coordinate of the target  

y_coordinate = blob[1]   # get y coordinate of the target  

print("The coordinates for this target are ({}, {}). This is target number {}".format(x_coordinate, y_coordinate, blobs.index(blob)+1))