python opencv write Chinese text, English text

Hyperlink: Summary of commonly used methods for deep learning work, matrix dimension changes, pictures, videos and other operations, including (torch, numpy, opencv, etc.)

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When opencv writes Chinese directly, it will be garbled, and cv2.putText() can only draw English.

Sample code:

import cv2
import numpy as np
from PIL import Image, ImageDraw, ImageFont


def image_add_text(img, text, left, top, text_color, text_size):
    # 判断是否是opencv图片类型，是就转换Image类型
    if isinstance(img, np.ndarray):
        img = Image.fromarray(cv2.cvtColor(img, cv2.COLOR_BGR2RGB))

    # 创建一个可以在给定图像上绘制的对象
    draw = ImageDraw.Draw(img)
    # 字体的格式
    font_style = ImageFont.truetype("font/simsun.ttc", text_size, encoding='utf-8')
    # 绘制文本
    draw.text((left, top), text, text_color, font=font_style)
    # 转换回opencv格式并返回
    return cv2.cvtColor(np.asarray(img), cv2.COLOR_RGB2BGR)


if __name__ == '__main__':
    img = cv2.imread("1.jpg")
    img = cv2.resize(img, (1920, 1080))
    # opencv 直接绘制中文会乱码，用下面方法实现绘制中文
    cv2.putText(img, '你好，世界', (100, 50), cv2.FONT_HERSHEY_SIMPLEX, 1.0, (255, 0, 0))
    # 绘制英文字
    cv2.putText(img, 'hello, world', (100, 100), cv2.FONT_HERSHEY_SIMPLEX, 1.0, (255, 0, 0))
    # 绘制中文
    img = image_add_text(img, '你好，世界', 100, 130, (255, 0, 0), 20)
    # 绘制中文
    cv2.imshow("img", img)
    cv2.waitKey(0)
    cv2.destroyAllWindows()

Example effect: