Adobe 65045315 - Photoshop Elements Use Manual page 328

USING PHOTOSHOP ELEMENTS 10
Glossary
The jagged edges seen at the edges of diagonal lines, arcs, and so on, caused by pixels lining up in a saw-tooth
aliasing
pattern.
Masks, which let you manipulate, isolate, and protect specific parts of an image. In Photoshop
alpha channels
Elements, alpha channels are called saved selections. To save an alpha channel, choose Select > Save Selection. To load
an alpha channel, choose Select > Load Selection.
The existing lighting conditions under which a photo is taken, without enhancement from a camera
ambient light
flash.
A series of images in GIF format that create the illusion of movement when they are displayed in
animated GIF
sequence over time.
The smoothing of jagged edges in digital images by averaging the colors of the pixels at a boundary.
anti-aliasing
A type of file compression used to compress JPEG files.
arithmetic coded JPEG
Any unexpected and undesired change to a digital image caused by incorrect settings or faulty processing.
artifact
Examples include blooming, moire, sharpening, and noise.
The ratio of an image's width to its height. It is used to determine how an image fits on a page or monitor.
aspect ratio
Related to an application (also, file association). Each file type has an associated application. For example,
associated
PSD files are associated with Adobe Photoshop and Photoshop Elements. You receive an alert if you try to open a file
that lacks an associated application.
Voice narration of a photo.
audio caption
An automatic color-correction command.
Auto Levels
B
The bottom-most layer in an image, usually containing the image data. The Background layer is
Background layer
always locked. If you want to change its stacking order, blending mode, or opacity, you must first convert it to a regular
layer.
Light coming from a source behind the photographed subject.
backlight
In digital photography, the illusion that an image is slightly raised from its background surface.
bas relief
The standard compression scheme for JPEG files. Baseline JPEG files display in line-by-line passes
baseline JPEG
when viewed on the web.
Performing one or more tasks to a group of files at the same time.
batch processing
A raised or depressed effect around all or part of an image or text. Bevels are created by applying highlight and
bevel
shadow to the inside and outside edges of its border to simulate three-dimensional depth.
The number of colors used to represent a pixel in an image. A 1-bit image is black and white; an 8-bit image
bit depth
can have 256 colors or shades of gray; a 16-bit image can have 65,536 colors.
An image consisting of rows and columns of pixels in computer memory. Also called a raster image.
bitmap image
Bitmap file formats include BMP, GIF, JPEG, PSD, PICT, and TIFF. (See also
Bits per channel. This measurement determines how many tones each color channel can contain.
bits/channel
A theoretical material that is black when completely cold and that begins to glow in various colors as it is
black body
heated. As its temperature (measured in degrees Kelvin) rises, it begins glowing in colors ranging from red (coolest)
to white (hottest). (See also "color temperature" on page 324.)
Last updated 1/2/2012
"vector graphics" on page 334.)
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