from PIL import Imagedef change_brightness(img: Image, level: float) -> Image:"""按照给定的亮度等级，改变图片的亮度"""def brightness(c: int) -> float:return 128 + level + (c - 128)if not -255.0 <= level <= 255.0:raise ValueError("level must be between -255.0 (black) and 255.0 (white)")return img.point(brightness)if __name__ == "__main__":# 加载图片with Image.open("image_data/test.jpg") as img:# 改变亮度到100brigt_img = change_brightness(img, 100)brigt_img.save("image_data/test_brightness.png", format="png")

图片亮度处理前：

图片亮度处理后：

 

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