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USING PHOTOSHOP ELEMENTS 8
Glossary
Last updated 7/26/2011
transparency In digital photography, the functionality that supports transparent areas in an image or image layer.
Certain image formats do not support transparency.
trim To remove pixels from an image by using the Trim command in Photoshop. Photoshop Elements doesn’t have
a Trim command.
TWAIN A protocol by which applications and devices, such as scanners and cameras, exchange information.
type mask A selection outline in the shape of text.
type style See “font style” on page 295.
U
underexposed image An image that is overly dark because it was taken in low-light conditions or with incorrect
camera settings.
Unicode character Part of the Worldwide Character coding system for text.
Unsharp Mask A technique that sharpens details in an image by increasing the contrast between light and dark areas.
(The name originates from traditional photography, where contrast is increased by adding a slightly blurred negative
over the original.)
V
vector graphics Lines, shapes, and other graphic image components stored in a format that incorporates geometric
formulas for rendering the image elements. For this reason, the graphics scale without degradation of image quality,
and there are no jagged lines in the output. Adobe Illustrator is a vector graphics program.
video monitor Video monitors use a progressive scanning method to display images (as compared to televisions,
which use interlaced fields).
vignetting An effect in which the edges of an image gradually fade out.
W
warm colors Colors at the red end of the spectrum, including yellow and orange, associated with heat.
warping A distortion of an image, often text, to conform to a variety of shapes. For instance, a line of text can be
warped in the shape of an arc or wave.
Web Photo Gallery A feature for generating a full site of your images, which you can upload to your own web site.
web-safe color Any of the 216 colors that are displayed consistently on the web, regardless of browser and computer
platform.
white balance A function that compensates for the different rendering of identical colors under different sources of
light: incandescent, fluorescent, sunlight, and so on.
white point A reference point used to represent white. This reference point is used to calculate all other colors in the
image.
Z
zero length images Images without specified dimensions.
zero width images Images without specified dimensions.
ZIP encoding A lossless compression technique best used for images that contain large areas of a single color.
