26 lines
552 B
Python
26 lines
552 B
Python
import cv2
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def on_mouse(event, x, y, flags, param):
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rect_start = (0, 0)
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rect_end = (0, 0)
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# 鼠标左键按下，抬起，双击
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if event == cv2.EVENT_LBUTTONDOWN:
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rect_start = (x, y)
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elif event == cv2.EVENT_LBUTTONUP:
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rect_end = (x, y)
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cv2.rectangle(img, rect_start, rect_end, (0, 255, 0), 2)
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img = cv2.imread("lena.jpg")
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cv2.namedWindow('test')
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cv2.setMouseCallback("test", on_mouse)
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while (1):
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cv2.imshow("test", img)
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if cv2.waitKey(1) & 0xFF == ord('q'):
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break
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cv2.destroyAllWindows()
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