550 | Corel PHOTO-PAINT X8 User Guide
fractal
An irregular shape generated by a repeating pattern. Fractals can be used to mathematically generate an irregular and complex image by
following a pattern, without having to define all of the individual components in the image.
G
Gaussian
A type of pixel distribution that spreads the pixel information outward using bell-shaped curves rather than straight lines.
GIF
A graphic file format designed to use a minimum of disk space and be easily exchanged between computers. This format is commonly used
to publish images of 256 or fewer colors to the Internet.
glyph (typographic)
A typographic glyph corresponds to a single character of a typeface.
grab area
The area of a command bar that can be dragged. Dragging the grab area moves the bar, while dragging any other area of the bar has no
effect. The location of the grab area depends on the operating system you are using, the orientation of the bar, and whether the bar is
docked or undocked. Command bars with grab areas include toolbars, the toolbox, and the property bar.
gradient node
A square point that represents each color on the gradient arrow of a gradient fill, which is used to change the fill’s start and end points,
colors, and transparency values.
grayscale
A color mode that displays images by using 256 shades of gray. Each color is defined as a value between 0 and 255, where 0 is darkest
(black) and 255 is lightest (white). Grayscale images, especially photos, are commonly referred to as “black and white.”
grayscale image
An image that uses the grayscale color mode, which can display up to 256 shades of gray, ranging from white to black. Grayscale images,
especially photos, are commonly referred to as “black and white.”
grid
A series of evenly spaced horizontal and vertical lines that are used to help draw and arrange objects.
group
A set of objects that behave as one unit. Operations you perform on a group apply equally to each of its objects.
guideline
A horizontal, vertical, or slanted line that can be placed anywhere in the drawing window to aid in object placement.
H
halftone
An image that has been converted from a continuous tone image to a series of dots of various sizes to represent different tones.
handles
A set of eight black squares that appear at the corners and sides of an object when the object is selected. By dragging individual handles,
you can scale, resize, or mirror the object. If you click a selected object, the shape of the handles changes to arrows so that you can rotate
and skew the object.
highlight, shadow, and midtone
Terms used to describe the brightness of pixels in a bitmap image. Brightness values range from 0 (dark) to 255 (light). Pixels in the first
third of the range are considered shadows, pixels in the middle third of the range are considered midtones, and pixels in the last third of
the range are considered highlights. You can lighten or darken specific areas in images by adjusting the highlights, shadows, or midtones. A
histogram is an excellent tool for viewing and evaluating the highlights, shadows, and midtones of images.
