Adobe 29180155 - Photoshop Elements 4.0 User Manual page 311

I
International Color Consortium. ICC device profiles are the industry standard for reproducing colors accurately
ICC
across devices such as scanners, monitors, and printers. See profile.
Image Color Management, is the Windows built-in color management system that uses color profiles for images
ICM
and devices such as scanners or printers. Similar to Apple's ColorSync on Mac OS.
A measure of the light falling upon a subject in a photograph.
illuminance
A section of hard disk space used as virtual memory. The image cache speeds the on-screen redraw of
image cache
high-resolution images.
The color mode of an image, such as Grayscale or RGB.
image mode
A color that is rendered by using a pixel value as an index to a palette of 256 or fewer colors for inter-
indexed color
pretation.
Video generated by a system developed for early television and still in use in standard television
interlaced video
displays. Video is displayed on screen at 30 frames per second (NTSC) or 25 frames per second (PAL). Each frame
is divided into two fields, each representing every other line of the video frame. The human eye does not perceive the
individual fields and frames, but rather perceives them as complete pictures. Compare with progressive scan.
The display of a series of low-resolution versions of an image in a browser while the full image file is
interlacing
downloaded.
J
Specifies the randomness of a brush stroke.
jitter
Joint Photographic Experts Group. A committee of experts that develops algorithms for compressing
JPEG
computer image files. Also, any graphic file to which a JPEG algorithm is applied. JPEG is the format generally used
to share photographs over the web. When you save in JPEG format, you can specify quality of image; the greater the
quality, the lower the compression and the larger the file. The higher the compression, the greater the loss of image
data. JPEG 2000 improves on JPEG and also supports transparency but is not available for some images.
JPEG compression A JPEG standard for reducing the data required to represent an image and the disk space the
image occupies. JPEG is a lossy technique.
K
A block of horizontal type that is laid out in a vertical line. Also called renmoji or tate-chuu-yoko.
kumimoji
L
A mechanism for altering an image while preserving the original. You create layers, which are like transparent
layer
sheets of acetate (or clear plastic), and superimpose them over the image. You can then manipulate the image by
working on the overlying layers. In addition to ordinary image layers, there are special kinds of layers. See fill layer,
and adjustment layer.
A collection of layers saved with a Photoshop image. When you open a file with a layer group in
layer group
Photoshop Elements, individual layers in the set are hidden in a read-only folder. To edit a layer group in Photoshop
Elements, you must first simplify the layer.
A protected area in an adjustment layer. Areas below the mask cannot be edited.
layer mask
Functionality for adjusting color and tone. With a Levels adjustment, you can set shadow and highlight values
Levels
to use a full tonal range, adjust middle tones only, correct color casts, and so on.
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