Glossary - Minolta Dimage Scan Multi Instruction Manual

GLOSSARY

BRIGHTNESS:
The lightness or darkness of the image.
CHANNEL
The component of an image. Your scanned image has three channels; red, green, and blue (RGB).
CONTRAST
The gradation of shades in an image. A high contrast image has very dark areas and bright areas without many
middle shades. A low contrast image has many tones that are close to the same brightness. Low contrast images
are often described as looking 'flat'.
CROP
To trim and delete the unwanted edges of the image.
DPI
Dots (pixels) per inch.
EMULSION SIDE
The side of the film coated with the photographic material.
GAMMA
The contrast of only the middle tones.
HIGHLIGHTS
The lighter areas of the image.
HISTOGRAM
A graph showing the amount of each level of the 256 brightness levels.
INTERPOLATION
A form of adding new pixels in an image when resampling up.
MIDTONE
The middle shades of an image, in between light and dark.
NEUTRAL
Having no colour cast, such as black, white, or gray.
PIXEL
Abbreviation for picture element. The dots that make up an electronic image.
RESAMPLE
To change the number of pixels in the image. If pixels are discarded when shrinking an image, it is called
resampling down. If new pixels are created in an image, it is called resampling up (p. 59).
RESOLUTION
The number of pixels in a given area of the image; such as pixels per inch or pixels per centimeter. High resolution
is the term for an image with a lot of pixels in a given area. Low resolution means there are not many pixels in a
given area.
RGB
Red, Green, and Blue. These are the colours of the three channels that make up the scanned image. Monitors use
red, green, and blue phosphors to create the image you see on the screen.
SHADOWS
The dark areas of an image.
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