BrightnessContrast

app.command.BrightnessContrast {
  ui=true,
  channels=FilterChannels...,
  brightness=0,
  contrast=0
}

ui: Shows the dialog on the screen, true by default. Set to false for automatic change brightness and/or contrast without asking to the user for the change.
channels: A combination of FilterChannels with bitwise OR (|) operator. By default it is equal to: FilterChannels.RED | FilterChannels.GREEN | FilterChannels.BLUE | FilterChannels.GRAY.
brightness: Brightness factor (0 by default), a value between -100 and 100.
contrast: Contrast factor (0 by default), a value between -100 and 100.