Classes to convert images to a lower
color type.
Usually, that conversion is lossy (e.g. from RGB truecolor to
grayscale, or from shades of gray to black and white).
However, the {@link net.sourceforge.jiu.color.reduction.AutoDetectColorType} class reduces only if
an image can be converted to a lower
color type
without losing information.
This is the inverse operation to color promotion,
provided by another package.