使用opencv python获取文本大小

import cv2
import numpy as np

image = cv2.imread('image.jpg')
gray = cv2.cvtColor(image, cv2.COLOR_BGR2GRAY)

_, binary = cv2.threshold(gray, 0, 255, cv2.THRESH_BINARY_INV + cv2.THRESH_OTSU)

kernel = np.ones((3, 3), np.uint8)
dilated = cv2.dilate(binary, kernel, iterations=2)
eroded = cv2.erode(dilated, kernel, iterations=1)

contours, _ = cv2.findContours(eroded, cv2.RETR_EXTERNAL, cv2.CHAIN_APPROX_SIMPLE)
text_boxes = []
for contour in contours:
    x, y, w, h = cv2.boundingRect(contour)
    text_boxes.append((x, y, w, h))

for i, box in enumerate(text_boxes):
    x, y, w, h = box
    print(f"Text Box {i+1}: Width={w}, Height={h}")