Automate GIMP best brightness and contrast to ease visualization? #52

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2024-04-18T00:15:21+02:00

Benjamin_Loison commented

2024-04-18 00:15:21 +02:00

Just being able to code brightness and contrast change would ease treating multiple images as it is required in #49.

https://github.com/python-pillow/Pillow/blob/0cad346fc960bc07cde9d1d9135421978e2f28e8/src/PIL/ImageEnhance.py#L75-L81

https://github.com/python-pillow/Pillow/blob/0cad346fc960bc07cde9d1d9135421978e2f28e8/src/PIL/ImageEnhance.py#L58-L64

from PIL import Image, ImageEnhance

img = Image.open('photo_benjamin_loison.jpg')
# enhancer = ImageEnhance.Contrast(img)
enhancer = ImageEnhance.Brightness(img)
# to reduce brightness by 50%, use factor 0.5
img = enhancer.enhance(0.5)

img.show()

Source: the Stack Overflow answer 67028021.

Just being able to code brightness and contrast change would ease treating multiple images as it is required in #49. https://github.com/python-pillow/Pillow/blob/0cad346fc960bc07cde9d1d9135421978e2f28e8/src/PIL/ImageEnhance.py#L75-L81 https://github.com/python-pillow/Pillow/blob/0cad346fc960bc07cde9d1d9135421978e2f28e8/src/PIL/ImageEnhance.py#L58-L64 ```python from PIL import Image, ImageEnhance img = Image.open('photo_benjamin_loison.jpg') # enhancer = ImageEnhance.Contrast(img) enhancer = ImageEnhance.Brightness(img) # to reduce brightness by 50%, use factor 0.5 img = enhancer.enhance(0.5) img.show() ``` Source: [the Stack Overflow answer 67028021](https://stackoverflow.com/a/67028021).

Benjamin_Loison added the enhancement low priority quick labels 2024-04-18 00:15:28 +02:00

Benjamin_Loison commented

2024-05-10 00:49:31 +02:00

If the images are normalized, despite inner bounds different distributions have same contrast modification, right?

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Reference: Benjamin_Loison/Robust_image_source_identification_on_modern_smartphones#52