如何在图像中增加文本的笔画或使文本加粗？在Python中

from PIL import Image, ImageDraw, ImageFont

def add_text_stroke(image_path, text, position, font_path, font_size, stroke_width=2, stroke_color=(0, 0, 0)):
    # 打开图像
    image = Image.open(image_path)
    draw = ImageDraw.Draw(image)
    
    # 加载字体
    font = ImageFont.truetype(font_path, font_size)
    
    # 计算文本的边界框
    text_bbox = draw.textbbox(position, text, font=font)
    
    # 绘制轮廓
    for x_offset in range(-stroke_width, stroke_width + 1):
        for y_offset in range(-stroke_width, stroke_width + 1):
            if x_offset == 0 and y_offset == 0:
                continue
            draw.text((position[0] + x_offset, position[1] + y_offset), text, font=font, fill=stroke_color)
    
    # 绘制原始文本
    draw.text(position, text, font=font, fill=(255, 255, 255))  # 假设原始文本颜色为白色
    
    # 保存图像
    image.save('output_image.jpg')

# 使用示例
add_text_stroke('input_image.jpg', 'Hello, World!', (50, 50), 'arial.ttf', 36)

def bold_text(image_path, text, position, font_path, font_size, boldness=2, text_color=(0, 0, 0)):
    # 打开图像
    image = Image.open(image_path)
    draw = ImageDraw.Draw(image)
    
    # 加载字体
    font = ImageFont.truetype(font_path, font_size)
    
    # 绘制加粗文本
    for x_offset in range(-boldness, boldness + 1):
        for y_offset in range(-boldness, boldness + 1):
            draw.text((position[0] + x_offset, position[1] + y_offset), text, font=font, fill=text_color)
    
    # 保存图像
    image.save('output_bold_text.jpg')

# 使用示例
bold_text('input_image.jpg', 'Hello, World!', (50, 50), 'arial.ttf', 36)