def __init__(self, gamma: float, gain: float = 1) -> None:
        """
        Args:
            gamma: Non-negative real number. gamma larger than 1 make the shadows darker, while gamma smaller than 1 make dark regions lighter.
            gain: constant multiplier
        """
        self.gamma = gamma
        self.gain = gain

        Args:
            gamma: Non-negative real number. gamma larger than 1 make the shadows darker, while gamma smaller than 1 make dark regions lighter.
            gain: constant multiplier
        
semseg/augmentations.py