ADOBE PHOTOSHOP ELEMENTS 9

USING PHOTOSHOP ELEMENTS 9
Glossary
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fuzziness A tolerance setting for the Magic Wand tool and the Replace Color command. It controls the degree to
which related colors are included in the selection. See Tolerance.
G
gamma adjustment The contrast resulting from darkening or lightening the midtones of an image. When you adjust
the gamma, you change the brightness of the midtones without substantially affecting the highlights and shadows.
gamut The range of color that a device can reproduce. (See also “color space” on page 310.)
Gaussian blur A softening effect applied through a bell-shaped distribution of tones and colors.
GIF Graphic image file format. A file format suitable for images that contain line art, large areas of a single color, and
text. Web animations are done with images in GIF format.
gradient Any of several methods for achieving a smooth transition between two adjacent colors, including black and
white.
Gray working space profile A predefined profile that determines how best to display and print grayscale images for a
given color setting.
grayscale A single-channel image that includes only black, white, and shades of gray. Depending on the bit depth,
grayscale images can reproduce various shades of gray.
H
halftone A monochrome image made up of variably sized dots simulating the shades of gray in a photograph. It is used
for reproducing photographs on PostScript printers and printing presses.
highlight and shadow The lightest and darkest colors in an image.
highlights The brightest elements in an image. (See also “shadows” on page 318.)
histogram A bar chart showing the distribution of the pixel values in a digital image. The horizontal axis represents
levels from 0 (darkest) to lightest (255), and the vertical axis represents the numbers of pixels at each level.
history state An image state listed in the Undo History panel.
hotspot An area in which light is concentrated to such a degree that all detail is lost; that is, an area that is blown out
to white.
HSB A color mode that is based on the human perception of color and describes it according to hue, saturation, and
brightness.
hue The color reflected from or transmitted through an object. In common use, hue is the property that allows a color
to be distinguished as red, blue, yellow, and so on; the “color of a color.”
hue jitter Sets the rate at which the stroke color switches between the foreground and background colors. Higher
values cause more frequent switches between the two colors than lower values.
I
ICC International Color Consortium. ICC device profiles are the industry standard for reproducing colors accurately
across devices such as scanners, monitors, and printers. (See also “profile” on page 317.)
ICM Image Color Management, is Windows’s built-in color management system that uses color profiles for images
and devices such as scanners or printers. Similar to Apple’s ColorSync on Mac OS.
illuminance A measure of the light falling upon a subject in a photograph.
Last updated 1/27/2011