python openCV自制绘画板
作者：PETERMAOSX
这篇文章主要为大家详细介绍了python openCV自制绘画板，文中示例代码介绍的非常详细，具有一定的参考价值，感兴趣的小伙伴们可以参考一下
本文实例为大家分享了python openCV自制绘画板的具体代码，供大家参考，具体内容如下
import numpy as np
import cv2
def nothing(x):
pass
cv2.namedWindow('image')
img = np.zeros((512,512,3),np.uint8)
cv2.createTrackbar('R','image',0,255,nothing)
cv2.createTrackbar('G','image',0,255,nothing)
cv2.createTrackbar('B','image',0,255,nothing)
drawing = False
mode = True
ix,iy = -1,-1
def drawing_fragment(event,x,y,flags,param):
r = cv2.getTrackbarPos('R','image')
g = cv2.getTrackbarPos('G','image')
b = cv2.getTrackbarPos('B','image')
color = (b,g,r)
global drawing,ix,iy,mode
if event == cv2.EVENT_LBUTTONDOWN:
drawing = True
ix = x
iy = y
elif event == cv2.EVENT_MOUSEMOVE:
if drawing:
if mode:
cv2.rectangle(img,(ix,iy),(x,y),color,-1)
else:
cv2.circle(img,(x,y),5,color,-1)
elif event == cv2.EVENT_LBUTTONUP:
drawing = False
cv2.setMouseCallback('image',drawing_fragment)
while True:
cv2.imshow('image',img)
k = cv2.waitKey(2)
if k == 27:
break
elif k == ord('q'):
mode = not mode
cv2.destroyAllWindows()
测试效果
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持脚本之家。