# 导入所需库
import cv2

# 定义显示图像上各点坐标的函数
def click_event(event, x, y, flags, params):
   if event == cv2.EVENT_LBUTTONDOWN:
      print(f'({x},{y})')

      # 在图像上添加坐标文本
      cv2.putText(img, f'({x},{y})',(x,y),
      cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 0, 255), 2)

      # 在图像上绘制点
      cv2.circle(img, (x,y), 3, (0,255,255), -1)

# 读取输入图像
img = cv2.imread('back2school.jpg')

# 创建窗口
cv2.namedWindow('Point Coordinates')

# 将回调函数绑定到窗口
cv2.setMouseCallback('Point Coordinates', click_event)

# 显示图像
while True:
   cv2.imshow('Point Coordinates',img)
   k = cv2.waitKey(1) & 0xFF
   if k == 27:
      break
cv2.destroyAllWindows()

(77,119)
(327,57)
(117,217)
(351,194)
(509,271)
(264,364)
(443,117)

# 导入所需的库
import cv2

# 显示在图像上单击的点的坐标的功能
def click_event(event, x, y, flags, params):

   # 检查左键点击
   if event == cv2.EVENT_LBUTTONDOWN:
      print('左键点击')
      print(f'({x},{y})')

   # 在图像上把坐标作为文本显示
   cv2.putText(img, f'({x},{y})', (x, y),   cv2.FONT_HERSHEY_SIMPLEX, 1, (255, 0, 0), 2)
   cv2.circle(img, (x, y), 3, (0, 0, 255), -1)
   if event == cv2.EVENT_RBUTTONDOWN:
      print('右键点击')
      print(f'({x},{y})')

      # 在图像上把坐标作为文本显示
      cv2.putText(img, f'({x},{y})', (x, y),
      cv2.FONT_HERSHEY_SIMPLEX, 1, (0, 255, 255), 2)
      cv2.circle(img, (x, y), 3, (0, 0, 255), -1)

# 读取输入图像
img = cv2.imread('back2school.jpg')

# 创建一个窗口
cv2.namedWindow('Point Coordinates')

# 将回调函数绑定到窗口
cv2.setMouseCallback('Point Coordinates', click_event)

# 显示图像
while True:
   cv2.imshow('Point Coordinates', img)
   k = cv2.waitKey(1) & 0xFF
   if k == 27:
      break
cv2.destroyAllWindows()

左键单击
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左键单击
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右键单击
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右键单击
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右键单击
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左键单击
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左键单击
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右键单击
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左键单击
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右键单击
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