ratio of width to height in a graphic which keeps the image proportional
Tiny colored dots in a grid called pixels; each dot joins to form an
image, also known as raster graphics
Refers to the number of distinct colors an image can contain and also refers to
how many bits are used for each pixel
May have shades of colors or shades of gray; used to refer to
photographic images stored digitally.
Cutting out unwanted areas in an image.
Creates an illusion that converted images have more colors than they really have
A vector graphic editor; you can draw lines and curves and change line
attributes such as thickness
The color depth of an image; a 24-bit image has a color depth of about 16.7
Shades of gray which range from white to black.
Indexed color image
graphic with only an 8-bit color depth which produces 256 colors
Intermediate frames that blend so that one appears to change into the next.
Used by GIFs for transmission over a network; data is not lost.
Reduces file size significantly, but loses data in the process.
The transformation of one entity to another; used to change the shape or
appearance of an image
Program that allows you to zoom in on an image and edit it pixel by pixel.
Grids of tiny dots called pixels
The number of pixels per inch (ppi); 72 ppi looks realistic on a computer screen.
An effect of web pages which occurs when the mouse rolls over an image, text or
button to reveal a hyperlink to another web page.
Three-dimensional (3-D) graphics
Gives users the feeling that they are part of an
environment by allowing them to interact with a program; used most frequently in games.
An animation process which is used to generate keyframes between two images.
Mathematical formulas are used to define lines, curves, and other
attributes of digital images; images do not lose clarity as they are enlarged
Immerses a user into an artificial environment which allows interaction with
the environment by moving around in it and manipulating objects