Samsung SF-5100P User Manual page 49

Changing colour mode
You can change the image's colour mode using the Color menu. These
commands do not work with regions. They are always applied to the whole
image. The result of the changes will be immediately shown in the preview
area.
Halftone: It makes the image look like simulated grayscales using different
combinations of 1-bit black and white pixels. Because this image type is
only 1-bit, the file size is smaller than grayscale.
Grayscale: It converts the image into a grayscale mode. All the colour
information will be removed from the image, and the image will look
black-and-white.
Color Resolution: It changes the colour depth of an image. Colour depth is
defined as a number of bits per one pixel of image. The more bits are used
to represent one pixel, the more colours you can have in one image. So,
when you reduce the colour depth, the number of available colors is
reduced too.
Note: You can work with an colour image using Samsung ImageThru (by
importing the colour image from an external application), but you cannot scan and
print the colour image because your machine is a black and white scanner and
printer.
Adjusting image attributes
You can adjust a number of image attributes for an image being edited by
using the following submenus from the Color menu.
Brightness: You can make your image look brighter or darker.
Contrast: The contrast value defines how sharp or smooth the transition
between areas of different colour will be. The higher the contrast value, the
more pronounced are the changes of colour.
Hue: Hue is the wavelength of light reflected from or transmitted through
an object. More commonly, hue is identified by the name of colour such as
red, orange, or green. Hue is measured as a location on the standard colour
wheel and is expressed as a degree between 360 and 0 .
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Saturation: Saturation, sometimes called chroma, is the strength or purity
of the colour. Saturation represents the amount of gray in proportion to the
hue and is measured as a percentage from 0% (gray) to 100% (fully
saturated). On the standard colour wheel, saturation increases as one
approaches the edge of the wheel; saturation decreases as one approaches
the center.
Gamma Correct: You can adjust the intensity of colors in an image by
changing the gamma constant that is used to map the intensity values.
Invert: The inverted image is similar to photo film negative; all light areas
become dark, dark areas become light, white becomes black, and black
becomes white.
Stretch Intensity: It automatically adjusts the intensity values based on the
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Working with ImageThru