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将滑动条修改为一条

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御坂スバル
2024-09-24 01:50:41 +08:00
parent e8baa12232
commit d467cb3e96
1 changed files with 5 additions and 14 deletions
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test/2024,9,23/homework.py
+5 -14
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@@ -14,28 +14,19 @@ def draw_circle(event, x, y, flags, param):
# 4
alpha = 0.3
beta = 80
def updateAlpha(x):
def updateBrightness(x):
global alpha, img, img2
alpha = cv.getTrackbarPos('Alpha', 'modify_sample')
alpha = cv.getTrackbarPos('Brightness', 'modify_sample')
alpha = alpha * 0.01
img = np.uint8(np.clip((alpha * img2 + beta), 0, 255))
def updateBeta(x):
global beta, img, img2
beta = cv.getTrackbarPos('Beta', 'modify_sample')
img = np.uint8(np.clip((alpha * img2 + beta), 0, 255))
img = np.uint8(np.clip((alpha * img2), 0, 255))
# 3
cv.namedWindow('modify_sample')
cv.createTrackbar('Alpha', 'modify_sample', 0, 300, updateAlpha)
cv.createTrackbar('Beta', 'modify_sample', 0, 255, updateBeta)
cv.setTrackbarPos('Alpha', 'modify_sample', 100)
cv.setTrackbarPos('Beta', 'modify_sample', 10)
cv.createTrackbar('Brightness', 'modify_sample', 0, 255, updateBrightness)
cv.setTrackbarPos('Brightness', 'modify_sample', 100)
cv.setMouseCallback('modify_sample', draw_circle)
while (1):
cv.imshow('modify_sample', img)