Preprocessing

The Preprocessing tab contains parameters for preliminary processing that help to enhance an original image before colorization. You can turn a color photo into grayscale, adjust the image brightness and contrast.

• Grayscale. Enable the check-box to convert the original image into black and white.
  
  Color Image (Check-Box is Disabled)

  
  Black And White Image (Check-Box is Enabled)
• Brightness. The strength of the image luminosity. Increasing the parameter makes the pixels lighter, decreasing it makes them darker.
  
  Brightness = -50

  
  Brightness = 50
• Contrast. Increasing the parameter increases the difference between bright and dark areas of the image.
  
  Contrast = -50

  
  Contrast = 50

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