import cv2
import numpy as np

img = cv2.imread("img/img.jpg")
cv2.namedWindow("img", 0)
cv2.resizeWindow("img", 720, 960)

cv2.createTrackbar("x", "img", 0, img.shape[0], lambda x: x)
cv2.createTrackbar("y", "img", 0, img.shape[1], lambda x: x)

while True:
    x = cv2.getTrackbarPos("x", "img")
    y = cv2.getTrackbarPos("y", "img")
    # 在画布上绘制文本
    img_copy = img.copy()
    text = 'OpenCV'  # 文本内容
    position = (y, x)  # 文本位置
    font = cv2.FONT_HERSHEY_TRIPLEX
    font_scale = 1.5  # 文本大小
    color = (255, 255, 255)  # 白色文本
    thickness = 2
    cv2.putText(img_copy, text, position, font, font_scale, color, thickness)
    cv2.imshow('img', img_copy)
    k = cv2.waitKey(1) & 0xFF
    if k == 27:
        cv2.imwrite("img/watermark.jpg", img_copy)
        break

cv2.destroyAllWindows()

复制