Function apply_gamma 

pub fn apply_gamma(image: &mut RgbImage, gamma: f32)

Apply gamma correction to an RGB image.

Applies the formula: V_out = V_in ^ (1 / gamma) Input and output are in the range [0, 65535].

For repeated application of the same gamma, consider using GammaLut which caches the lookup table.

Arguments

• image - The image to modify in place
• gamma - Gamma value (typically 2.2 for sRGB)