gamma() allows us to adjust the luminance of an image. Resulting pixels are defined as pixel^(1/gamma). The value of gamma is typically between 0.8 & 2.3 range, and value of 1.0 will not affect the resulting image.
Parameters :
| Parameter | Input Type | Description |
|---|---|---|
| adjustment_value | numbers.Real | value to adjust gamma level. |
| channel | basestring | optional channel to apply gamma correction. |
Example:
Source Image:
# Import Image from wand.image module from wand.image import Image   # Read image using Image function with Image(filename ="koala.jpeg") as img:     img.gamma(1.35)     img.save(filename ="kl-gamma.jpeg") |
Output :
Example 2: Increasing adjustment_value to 1.75.
# Import Image from wand.image module from wand.image import Image   # Read image using Image function with Image(filename ="koala.jpeg") as img:     img.gamma(1.75)     img.save(filename ="kl-gamma2.jpeg") |
Output :
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