缩进

2024-09-23 23:00:38 +08:00
parent c7d5bd94f5
commit d4cda7e637
1 changed files with 37 additions and 27 deletions
@@ -4,22 +4,32 @@ import numpy as np
 # 1
 img = cv.imread("sample.jpg", cv.IMREAD_GRAYSCALE)
 img2 = cv.imread('sample.jpg', cv.IMREAD_GRAYSCALE)
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 # 2
 def draw_circle(event, x, y, flags, param):
    if event == cv.EVENT_LBUTTONDOWN:
        cv.circle(img, (x, y), 10, 0, -1)
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 # 4
 alpha = 0.3
 beta = 80
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 def updateAlpha(x):
    global alpha, img, img2
    alpha = cv.getTrackbarPos('Alpha', 'modify_sample')
    alpha = alpha * 0.01
    img = np.uint8(np.clip((alpha * img2 + beta), 0, 255))
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 def updateBeta(x):
    global beta, img, img2
    beta = cv.getTrackbarPos('Beta', 'modify_sample')
    img = np.uint8(np.clip((alpha * img2 + beta), 0, 255))
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 # 3
 cv.namedWindow('modify_sample')
 cv.createTrackbar('Alpha', 'modify_sample', 0, 300, updateAlpha)