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lossy file format for audio
AAC, MP3, Vorbis
lossy file format for video
AVI, MOV, MP4, MPEG, WMA
lossless file format for audio
BMP, FLAC, WAV
lossless file format for images
GIF, PNG, TIF
lossy file format for images
JPG
alignment
Tools to control placement of objects in presentation or DTP software.
Bit depth
Refers to the number of colours in an image.
bit rate
Amount of data used to represent a single sample in a video or audio file.
bitmap graphics
Graphics composed of rectangular grids of pixels.
blue/green screen
Technique used to replace part of a video image matching a certain colour with computer graphics.
buffer
Temporary storage area used to store video or audio data ready for playing.
computer aided design (CAD)
Technical graphics software used to design products for manufacture.
computer-generated imagery (CGI)
Graphics created entirely on a computer, using 2D or 3D graphics software.
citation
Acknowledge to a piece of work used as a source.
cloning
Graphics technique which copies one part of an image to another, often to remove something from the image.
colour balance
Graphics filtering for altering the tones and intensities of colours in an image.
colour depth
Refers to the number of colours in an image.
colour levels
Graphics filtering for altering the tones and intensities of colours in an image.
Colour management
Ensuring printed output colours accurately match those on the screen.
colour profile
Used as part of colour synchronisation to specify how a device represents colour.
Colour synchronisation
Ensuring printed output colours accurately match those on the screen.
composite image
Image which was created from several separate images.
compression
Reduction in the amount of data used to store a file.
copyright
Legal concept which protects intellectual property from authorised copying, alteration, or use.
Creative Commons
Licensing system for authors who wish to distribute their work freely.
Cropping
Taking a small part (subset) of an image.
desktop publishing software (DTP)
Software used for laying out text and images on pages. Commonly used for books, magazines, and brochures.
digital effects
General name for operations performed on an image using graphics software.
Digital Rights Management (DRM)
Software which restricts the actions a user can perform with a file, such as copying or printing.
digitisation
The process of converting analog data into digital computer data.
DOC
File format for documents, used by Microsoft Office.
dots per inch (dpi)
Also known as printer resolution. The number of dots of colour a printer is capable of producing in a certain amount of space.
fair use
Exceptions to copyright law that allow copying in certain limited circumstances.
filters
General name for operations performed on an image using graphics software.
flipping
Image effect found in most graphics software.
header/footer
Area of a document which appears the same on every page.
GNU Free Documentation License
Licensing system for authors who wish to distribute their work freely.
image editor
Software used to create or edit bitmap graphics.
intellectual property
Refers to creations of the mind - non-physical property such as photographs, music, stories, and films.
layer
Technique used in graphics software to place digital images or effects on top of each other to build up a final image.
lossless compression
Compression technique in which the original file is completely recoverable, with no loss of quality. Compare lossy compression.
lossy compression
Compression technique in which some file data is sacrificed in order to reduce file size.
master page
A template page which is used to include standard features (such as page numbers or a header) on each page of a document in a consistent manner.
megapixel
Unit used to measure the resolution of digital cameras. Refers to 1 million pixels.
MIDI
Musical Instrument Digital Interface. System for communication between musical hardware and software applications.
morphing
Effect that transforms one image into another over a series of frames.
motion capture
A system used to capture human movement into a computer by attaching sensors to an actor and tracking their location.
object oriented graphics
Graphics which are stored as a series of mathematical shapes and properties that can be independently manipulated at any time.
ODT
File format for documents, used by LibreOffice.
Portable Document Format (PDF)
Common file format for the exchange of documents, which appears on screen exactly as it will appear on the printer.
pixel
Individual dots which make up bitmap graphics.
Pixels per Inch (PPI)
Number of pixels displayed in each inch of screen output.
plain text file
File format that stores characters using ASCII or Unicode encoding.
raster graphics
Graphics composed of rectangular grids of pixels.
resolution
Refers to the number of pixels in an image.
Rich Text Format (rtf)
File format for documents, which can store text and some basic formatting information.
rotating
Image effect found in most graphics software.
sample rate
Number of samples taken each second when recording sound.
scaling
Changing the size of an image.
selection tools
Tools in graphics software for selecting only a subset of an image.
streaming media
Video or audio data that is played while it is downloading.
SVG
Standard file format for vector image data.
template
A page which is used to include standard features (such as page numbers or a header) on each page of a document in a consistent manner.
text file
File format that stores characters using ASCII or Unicode encoding.
true colour
Image with 24 bit colour depth.
TXT
File format that stores characters using ASCII or Unicode encoding.
typography
The proficient use of fonts, font sizes, and font properties such as leading and kerning to display text in an appropriate manner.
vector graphics
Graphics which are stored as a series of mathematical shapes and properties that can be independently manipulated at any time.
video CODECs (coder-decoders)
Software required to view certain compressed video and audio formats.
virtual actors
Animated characters used in films, created entirely using computer graphics software.
watermarking
The process of adding an author name or logo into an image to identify its owner and prevent intellectual property theft.
WYSIWYG
What You See Is What You Get. Refers to programs that present their output onscreen exactly as it will appear when printed.
zip file
Compressed file format for general data.
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