opencv学习第6课官方练习实现 Create a Paint application with adjustable colors and brush radius using trackbars

 练习题目来源(网址最下方):https://docs.opencv.org/4.1.0/d9/dc8/tutorial_py_trackbar.html import numpy as np import cv2 as cv brush_color = [80,80,80] brush_size = 2 drawing = False # mouse callback function
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