adjust_brightness¶

paddle.vision.transforms. adjust_brightness ( img, brightness_factor ) [source]

Adjusts brightness of an Image.

Parameters

• img (PIL.Image|np.array|paddle.Tensor) – Image to be adjusted.

• brightness_factor (float) – How much to adjust the brightness. Can be any non negative number. 0 gives a black image, 1 gives the original image while 2 increases the brightness by a factor of 2.

Returns

Brightness adjusted image.

Return type

PIL.Image|np.array|paddle.Tensor

Examples

>>> import numpy as np
>>> from PIL import Image
>>> from paddle.vision.transforms import functional as F
>>> np.random.seed(2023)
>>> fake_img = (np.random.rand(256, 300, 3) * 255.).astype('uint8')
>>> fake_img = Image.fromarray(fake_img)
>>> print(fake_img.size)
(300, 256)
>>> print(fake_img.load()[1,1])
(61, 155, 171)
>>> converted_img = F.adjust_brightness(fake_img, 0.5)
>>> print(converted_img.size)
(300, 256)
>>> print(converted_img.load()[1,1])
(30, 77, 85)