opencv 图标绘画

import numpy as np
import cv2 as cv
img = np.zeros((512, 512, 3), np.uint8
img = cv.circle(img, (256, 176), 40, (0, 0, 255), -1))# 上－外圆－红色填充
img = cv.circle(img, (256, 176), 16, (0, 0, 0), -1)# 上－内圆－黑色填充
img = cv.circle(img, (210, 256), 40, (0, 255, 0), -1)# 左下－外圆－绿色填充
img = cv.circle(img, (210, 256), 16, (0, 0, 0), -1)# 左下－内圆－黑色填充
img = cv.circle(img, (302, 256), 40, (255, 0, 0), -1)# 右下－外圆－蓝色填充
img = cv.circle(img, (302, 256), 16, (0, 0, 0), -1)# 右下－内圆－黑色填充

pts = np.array([[256, 176], [210, 256], [250, 256], [276, 210]], np.int32)
pts = pts.reshape((-1, 1, 2))
img = cv.fillPoly(img, [pts], (0, 0, 0))# 用一个四角的多边形来填充覆盖左边的红绿之间的梯形

pts2 = np.array([[276, 210], [302, 256], [322, 210]], np.int32)
pts2 = pts2.reshape((-1, 1, 2))
img = cv.fillPoly(img, [pts2], (0, 0, 0))# 第2个覆盖，使用三角形覆盖蓝色圆形的一部分

font = cv.FONT_HERSHEY_DUPLEX
cv.putText(img, ‘OpenCv’, (10, 500), font, 4, (255, 255, 255), 2) #在图片上添加文字

cv.imshow(‘opencv’, img)
cv.waitKey()
cv.destroyAllWindows()

输出显示：