-
Notifications
You must be signed in to change notification settings - Fork 22
/
trackbar_cv.py
42 lines (30 loc) · 905 Bytes
/
trackbar_cv.py
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
import cv2 as cv
import numpy as np
from matplotlib import pyplot as plt
def change(x):
# print(x)
pass
def trackbar():
img = np.zeros((300, 512, 3), np.uint8)
cv.namedWindow("image")
cv.createTrackbar('B', 'image', 0, 255, change)
cv.createTrackbar('G', 'image', 0, 255, change)
cv.createTrackbar('R', 'image', 0, 255, change)
switch = '0: OFF\n 1: ON'
cv.createTrackbar(switch, 'image', 0, 1, change)
while True:
cv.imshow("image", img)
k = cv.waitKey(1) & 0xFF
if k == 27:
break
b = cv.getTrackbarPos('B', 'image')
g = cv.getTrackbarPos('G', 'image')
r = cv.getTrackbarPos('R', 'image')
s = cv.getTrackbarPos(switch, 'image')
if s == 0:
img[:] = 0
else:
img[:] = [b, g, r]
cv.destroyAllWindows()
if __name__ == '__main__':
trackbar()