iframe-proxy | Sunbelt Computer Software

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from PIL import Image

def change_brightness(img: Image, level: float) -> Image:

"""

Change the brightness of a PIL Image to a given level.

"""

def brightness(c: int) -> float:

"""

Fundamental Transformation/Operation that'll be performed on

every bit.

"""

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__":

# Load image

with Image.open("image_data/lena.jpg") as img:

# Change brightness to 100

brigt_img = change_brightness(img, 100)

brigt_img.save("image_data/lena_brightness.png", format="png")

Sunbelt Computer Software