Function inc_brightness 

pub fn inc_brightness(
    image_path: &str,
    image_output_directory: &str,
    parse_filename: &str,
    brightness: u8,
) -> Result<(), Box<dyn Error>>

Example

extern crate photon_effects;

let input = "/tmp/logo.png";
let output_dir = "/tmp/";

photon_effects::inc_brightness(
  input,
  output_dir,
  "logo_inc_brightness.png",
  10
).expect("Couldn't create inc_brightness image");