使用opencv python在图像上绘制双侧箭头

import cv2
import numpy as np

image = cv2.imread('image.jpg')
canvas = np.zeros_like(image)

start_point = (100, 100)
end_point = (300, 300)

# 绘制箭头主体
cv2.arrowedLine(canvas, start_point, end_point, (0, 0, 255), 2)

# 绘制箭头两侧的线段
arrow_length = 20
arrow_angle = np.pi / 6  # 30度
dx = arrow_length * np.cos(arrow_angle)
dy = arrow_length * np.sin(arrow_angle)
cv2.line(canvas, end_point, (int(end_point[0] - dx), int(end_point[1] - dy)), (0, 0, 255), 2)
cv2.line(canvas, end_point, (int(end_point[0] - dx), int(end_point[1] + dy)), (0, 0, 255), 2)

cv2.imshow('Arrow', canvas)
cv2.waitKey(0)
cv2.destroyAllWindows()