PIL如何调整图像大小以填充高度和宽度尺寸

from PIL import Image, ImageOps

def resize_image_with_padding(image_path, target_width, target_height):
    image = Image.open(image_path)
    original_width, original_height = image.size

    # 计算缩放比例
    width_ratio = target_width / original_width
    height_ratio = target_height / original_height
    ratio = max(width_ratio, height_ratio)

    # 计算调整后的尺寸
    new_width = int(original_width * ratio)
    new_height = int(original_height * ratio)

    # 调整图像大小并填充
    resized_image = ImageOps.pad(image, (new_width, new_height))

    # 保存调整后的图像
    resized_image.save("resized_image.jpg")

# 调用函数进行图像大小调整和填充
resize_image_with_padding("input_image.jpg", 500, 300)