Created
March 5, 2020 10:08
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Try to create the logo of OpenCV using drawing functions available in OpenCV.
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| import numpy as np | |
| import cv2 #3.4.2 | |
| import math | |
| r1 = 70 | |
| r2 = 30 | |
| ang = 60 | |
| d = 170 | |
| h = int(d/2*math.sqrt(3)) | |
| dot_red = (256,128) | |
| dot_green = (round(dot_red[0]-d/2), round(dot_red[1]+h)) | |
| dot_blue = (round(dot_red[0]+d/2), round(dot_red[1]+h)) | |
| # tan = float(dot_red[0]-dot_green[0])/(dot_green[1]-dot_red[0]) | |
| # ang = math.atan(tan)/math.pi*180 | |
| red = (0, 0, 255) | |
| green = (0, 255, 0) | |
| blue = (255, 0, 0) | |
| black = (0, 0, 0) | |
| full = -1 | |
| img = np.zeros((512, 512, 3), np.uint8) | |
| cv2.circle(img, dot_red, r1, red, full) | |
| cv2.circle(img, dot_green, r1, green, full) | |
| cv2.circle(img, dot_blue, r1, blue, full) | |
| cv2.circle(img, dot_red, r2, black, full) | |
| cv2.circle(img, dot_green, r2, black, full) | |
| cv2.circle(img, dot_blue, r2, black, full) | |
| cv2.ellipse(img, dot_red, (r1, r1), ang, 0, ang, black, full) | |
| cv2.ellipse(img, dot_green, (r1, r1), 360-ang, 0, ang, black, full) | |
| cv2.ellipse(img, dot_blue, (r1, r1), 360-2*ang, ang, 0, black, full) | |
| cv2.imwrite("opencv_logo.png", img) |
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