缩放图像以完全填充边界框

from PIL import Image

def resize_image_to_fill_bounding_box(image_path, bounding_box_size):
    image = Image.open(image_path)
    image_width, image_height = image.size
    box_width, box_height = bounding_box_size

    # 计算缩放比例
    width_ratio = box_width / image_width
    height_ratio = box_height / image_height
    scale = max(width_ratio, height_ratio)

    # 计算新的图像大小
    new_width = int(image_width * scale)
    new_height = int(image_height * scale)

    # 调整图像大小
    resized_image = image.resize((new_width, new_height), Image.ANTIALIAS)

    # 创建一个新的图像，并将调整后的图像粘贴到其中心
    new_image = Image.new('RGB', bounding_box_size, (255, 255, 255))
    new_image.paste(resized_image, ((box_width - new_width) // 2, (box_height - new_height) // 2))

    return new_image

pip install Pillow