coordinate_picker.py

## Written by Katya/Aral/Jasmina
# importing the module
import cv2

# function to display the coordinates of
# of the points clicked on the image
def click_event(event, x, y, flags, params):

 # checking for left mouse clicks
 if event == cv2.EVENT_LBUTTONDOWN:

  # displaying the coordinates
  # on the Shell
  print(x, ' ', y)

  # displaying the coordinates
  # on the image window
  font = cv2.FONT_HERSHEY_SIMPLEX
  cv2.putText(img, str(x) + ',' +
     str(y), (x,y), font,
     1, (255, 0, 0), 2)
  cv2.imshow('./test_resized/busan2.jpg', img)

 # checking for right mouse clicks
 if event==cv2.EVENT_RBUTTONDOWN:

  # displaying the coordinates
  # on the Shell
  print(x, ' ', y)

  # Save the values to an array
  values = [[x, y]]
  # Print the values in the desired format
  for value in values:
   print(value)

  # displaying the coordinates
  # on the image window
  font = cv2.FONT_HERSHEY_SIMPLEX
  b = img[y, x, 0]
  g = img[y, x, 1]
  r = img[y, x, 2]
  cv2.putText(img, str(b) + ',' +
     str(g) + ',' + str(r),
     (x,y), font, 1,
     (255, 255, 0), 2)
  cv2.imshow('./test_resized/busan2.jpg', img)

# driver function
if __name__=="__main__":

 # reading the image
 img = cv2.imread('./test_resized/busan2.jpg', 1)

 # displaying the image
 cv2.imshow('./test_resized/busan2.jpg', img)

 # setting mouse handler for the image
 # and calling the click_event() function
 cv2.setMouseCallback('./test_resized/busan2.jpg', click_event)

 # wait for a key to be pressed to exit
 cv2.waitKey(0)

 # close the window
 cv2.destroyAllWindows()