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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