Common
Terminology
·
Anti-aliasing: In digital signal processing, anti-aliasing is the technique
of minimizing the distortion artifacts known as aliasing when representing a
high-resolution signal at a lower resolution. Anti-aliasing is used in digital
photography, computer graphics, digital audio, and many other applications
·
ASCII: American
Standard Code for Information Interchange: (computer science) a code for
information exchange between computers made by different companies; a string of
7 binary digits represents each character; used in most microcomputers
·
Authoring Software: Refers to
software that enables the creation of multimedia or hypertext documents and
presentations.
·
AVI:
Audio Video Interleave, known by its
acronym AVI, is a multimedia container format introduced by Microsoft in
November 1992 as part of its Video for Windows technology. AVI files can
contain both audio and video data in a file container that allows synchronous
audio-with-video playback. An AVI is a sound and motion picture file that
conforms to the Microsoft Windows Resource Interchange File Format (RIFF)
specification. AVI files (which end with an .avi extension) require a special
player that may be included with your Web browser.
·
Bandwidth: a data
transmission rate; the maximum amount of information (bits/second) that can be
transmitted along a channel. In computer networking and computer science,
bandwidth, digital bandwidth, or network bandwidth is a measure of available or
consumed data communication resources expressed in bit/s or multiples of it
(kbit/s, Mbit/s etc).
·
Batch Processing: the serial execution of computer programs, The
authorization of transactions offline when immediate approval is not required.
Transactions are collected in a batch and sent as one transmission for
authorization and/or settlement. Batch processing is generally used with
mail/telephone order transactions.
- FTP:
use the file transfer protocol
to transfer data from one computer to another; "You can FTP these
data"
file transfer protocol: protocol that allows users to copy files
between their local system and any system they can reach on the network. The series of rules that
govern "uploading" and "downloading" files from a server.
These files can not usually be viewed by the browser software, but will be
saved to your hard drive to open or translate later. Current browsers integrate
FTP into their software, or you may use a stand alone program.
·
Gamut: In colour reproduction, including computer graphics and
photography, the gamut, or color gamut , is a certain complete subset of
colors. This means every colour combination that is possible to produce with a
given set of colourants on a given device or system.
·
GIF: The Graphics Interchange Format (GIF) is a bitmap image format
that was introduced by CompuServe in 1987 and has since come into widespread
usage on the World Wide Web due to its wide support and portability.
- Gradient:
In vector
calculus, the gradient of a scalar field is a vector field which points in
the direction of the greatest rate of increase of the scalar field, and
whose magnitude is the greatest rate of change. a graded change in the magnitude of some physical
quantity or dimension.
·
GUI: graphical user interface: a user interface based on graphics
(icons and pictures and menus) instead of text; uses a mouse as well as a
keyboard as an input device
·
HTML: HTML, which stands for HyperText Markup Language, is the
predominant markup language for web pages. It provides a means to create
structured documents by denoting structural semantics for text such as
headings, paragraphs, lists etc as well as for links, quotes, and other items.
·
Bitmap: In computer graphics, a bitmap or pixmap is a
type of memory organization or image file format used to store digital images.
The term bitmap comes from the computer programming terminology, meaning just a
map of bits, a spatially mapped array of bits.
·
BMP: The BMP file format, sometimes called bitmap or DIB file format
(for device-independent bitmap), is an image file format used to store bitmap
digital images, especially on Microsoft Windows and OS/2 operating systems.
- Browser:
A web browser is
a software application for retrieving, presenting, and traversing
information resources on the World Wide Web. An information resource is
identified by a Uniform Resource Identifier (URI) and may be a web page,
image, video, or other piece of content/a
viewer who looks around casually without seeking anything in particular /a
program used to view HTML documents.
- Cache: In computer science, a cache ( )
is a component that improves performance by transparently storing data
such that future requests for that data can be served faster.
- Chroma: The aspect of a colour's hue that depends on
the amount of white or black in it; saturation.
- CGI: The Common Gateway Interface (CGI) is a
standard protocol that defines how webserver software can delegate the
generation of webpages to a console application. Such applications are
known as CGI scripts; they can be written in any programming language,
although scripting languages are often used.
- CYMK: The CMYK color model (process color, four
color) is a subtractive color model, used in color printing, and is also
used to describe the printing process itself. CMYK refers to the four inks
used in some color printing: cyan, magenta, yellow, and key black.
- Hyperlink: a link from
a hypertext file to another location or file; typically activated by
clicking on a highlighted word or icon at a particular location on the
screen. In computing, a hyperlink (or link) is a reference to a document
that the reader can directly follow, or that is followed automatically.
The reference points to a whole document or to a specific element within a
document. Hypertext is text with hyperlinks.
- Hypermedia: Hypermedia
is used as a logical extension of the term hypertext in which graphics,
audio, video, plain text and hyperlinks intertwine to create a generally
non-linear medium of information. The use of text, data, graphics, audio
and video as elements of an extended hypertext system in which all
elements are linked so that the user can move between them at will.
- Interface: a program that controls a display for the user
(usually on a computer monitor) and that allows the user to interact with
the system.
- Java: Java refers to a number of proprietary
computer software products and specifications from Sun Microsystems, a
subsidiary of Oracle Corporation, that together provide a system for
developing application software and deploying it in a cross-platform
environment. a platform-independent object-oriented programming language.
- Javascript: JavaScript is an
object-oriented scripting language used to enable programmatic access to
objects within both the client application and other applications.
- JPEG: In computing, JPEG (, ) (named after the Joint
Photographic Experts Group who created the standard) is a commonly used
method of lossy compression for photographic images. The degree of
compression can be adjusted, allowing a selectable tradeoff between
storage size and image quality.
- Jquery: Jquery is a lightweight cross-browser
JavaScript library that emphasizes interaction between JavaScript and
HTML. It was released in January 2006 at BarCamp NYC by John Resig. Used
by over 27% of the 10,000 most visited websites, jQuery is the most
popular JavaScript library in use today. JQuery is a fast and
concise JavaScript library which simplifies the creation of animations,
communications to server requests, document transversing and event
handling .
- Codec: A codec is a device or computer program capable
of encoding and/or decoding a digital data stream or signal. The word
codec is a portmanteau (a blending of two or more words) of
'compressor-decompressor' or, more commonly, 'coder-decoder'.
- CSS: Cascading Style Sheets (CSS) is a style sheet
language used to describe the presentation semantics (that is, the look
and formatting) of a document written in a markup language.
- Database: A database is a collection of data for one or
more multiple uses. One way of classifying databases involves the type of
content, for example: bibliographic, full-text, numeric, image. Other
classification methods start from examining database models or database
architectures.A collection of (usually) organized information in a
regular structure, usually but not necessarily in a machine-readable
format accessible by a computer; A software program for storing,
retrieving and manipulating a database(1); A combination of (1) and (2)
.
- Data Compression: In computer science and
information theory, data compression or source coding is the process of
encoding information using fewer bits (or other information-bearing units)
than an unencoded representation would use, through use of specific
encoding schemes.
- Dithering: the process of representing intermediate colors
by patterns of tiny colored dots that simulate the desired color .Dither
is an intentionally applied form of noise used to randomize quantization
error, preventing large-scale patterns such as "banding"
(stepwise rendering of smooth gradations in brightness or hue) in images,
or noise at discrete frequencies in an audio recording, that are more
objectionable.
- DPI: dots per inch . Resolution that varies
across media. For print, image files are optimized at 300 DPI. For the Web
(GIF and JPEG file formats), files are optimized at 72 DPI, the number of
pixels across one inch of most monitors .
- Flatten (image): lower the pitch of (musical
notes) .
- LAN: A local area network (LAN) is a computer
network covering a small physical area, like a home, office, or small
group of buildings, such as a school, or an airport.
- Leading: In typography, leading (, rhymes with heading)
refers to the amount of added vertical spacing between lines of type.
- Marquee: The marquee tag is a non-standard HTML element
which causes text to scroll up, down, left or right automatically.
- Metadata: Metadata (meta data, meta-data, or sometimes
metainformation) is “data about data.” The use of metadata is an emerging
practice with close ties to information management, information science,
information technology, librarianship and GIS.
- MPEG: A computer file (as of a movie) in an MPEG
format; Moving Pictures Experts Group; Any of a group of computer file
formats for the compression and storage of digital video and audio data
.
- Multimedia: transmission that combine
media of communication (text and graphics and sound etc.)
- MySQL: Pronounced “my ess cue el”, MySQL is an open
source relational database management system. It is largely SQL-compliant
and runs on a wide variety of operating systems. MySQL forms one of the
bases for the popular LAMP server configuration, Linux Apache MySQL
PHP/Perl/Python.
- Peripheral: A peripheral is a device
attached to a host computer but not part of it whose primary functionality
is dependent upon the host, and can therefore be considered as expanding
the host's capabilities, while not forming part of the system's core
architecture.
- PICT: PICT is a graphics file format introduced on
the original Apple Macintosh computer as its standard metafile format. It
allows the interchange of graphics (both bitmapped and vector), and some
limited text support, between Mac applications, and was the native
graphics format of QuickDraw.
- Pixel: In digital imaging, a pixel (or picture
element) is a single point in a raster image. The pixel is the smallest
addressable screen element, it is the smallest unit of picture which can
be controlled. Each pixel has its own address. The address of a pixel
corresponds to its coordinates.
- PHP: Hypertext Preprocessor (the name is a recursive
acronym) is a widely used, general-purpose scripting language that was
originally designed for web development to produce dynamic web pages.
- PNG: Portable Network Graphics (PNG) is a bitmapped
image format that employs lossless data compression. PNG was created to
improve upon and replace GIF (Graphics Interchange Format) as an
image-file format not requiring a patent license. It is or spelled out as
P-N-G.
- Opacity: Opacity is the measure of impenetrability to
electromagnetic or other kinds of radiation, especially visible light. In
radiative transfer, it describes the absorption and scattering of
radiation in a medium, such as a plasma, dielectric, shielding material,
glass, etc.
- PDF: Portable Document Format (PDF) is a file format
created by Adobe Systems in 1993 for document exchange. PDF is used for
representing two-dimensional documents in a manner independent of the
application software, hardware, and operating system.Adobe Systems
Incorporated.
- Resolution: the number of pixels per
square inch on a computer-generated display; the greater the resolution, the
better the picture.
- RGB: The RGB color model is an additive color model
in which red, green, and blue light are added together in various ways to
reproduce a broad array of colors. The name of the model comes from the
initials of the three additive primary colors, red, green, and blue.
- Saturation: In colorimetry and color
theory, colorfulness, chroma, and saturation are related but distinct
concepts referring to the perceived intensity of a specific color.
Colorfulness is the difference between a color against gray.
- Thumbnail: Thumbnails are reduced-size
versions of pictures, used to help in recognizing and organizing them,
serving the same role for images as a normal text index does for words.
- Transparency: In the field of optics,
transparency (also called pellucidity or diaphaneity) is the physical
property of allowing light to pass through a material; translucency (also
called translucence or translucidity) only allows light to pass through
diffusely. The opposite property is opacity.
- PPI: Pixels per inch is part of how you would define
the resolution of an object that is screen-based. Some use DPI and PPI
interchangeably, though this is technically incorrect.
- Primary Colours: In printing - yellow, magenta and cyan
(subtractive primaries). In light - red, green and blue (additive
primaries).
- PSD: Adobe Photoshop, or simply Photoshop, is a
graphics editing program developed and published by Adobe Systems. It is
the current market leader for commercial bitmap and image manipulation
software, and is the flagship product of Adobe Systems.
- Quality control: Quality control is a process
by which entities review the quality of all factors involved in
production.
- Raster Image: In computer graphics, a
raster graphics image or bitmap is a data structure representing a
generally rectangular grid of pixels, or points of color, viewable via a
monitor, paper, or other display medium.
- XHTML: (Extensible Hypertext Markup Language) is a
family of XML markup languages that mirror or extend versions of the
widely used Hypertext Markup Language (HTML), the language in which web
pages are written.
- UI: User Interface. It is the graphic design and
appearance of a website, its function as seen and used by the person on
the user end, at the website in a browser. The UI of a website is
ultimately how it lets users know what it has to offer them.
- URL: the address of a web page on the world wide web.
n computing, a Uniform Resource Locator (URL) is a subset of the
Uniform Resource Identifier (URI) that specifies where an identified
resource is available and the mechanism for retrieving it.
- Value (colour): fix or determine the value
of; assign a value to, RGB and Hexadecimal Color Codes
Colors are made up of 3 sets of RGB numbers
representing the amount of Red, Green and Blue contained within a color. These colors are represented as
hexadecimal values.
For example, the hexadecimal numbers for black is #000000. The first two numbers (00) represent the amount of red the color contains. The second two numbers (00) represent the amount of green and the last two numbers
(00) represent the amount of blue the color contains. When
a color, such as black, contains 00 amount of red, green or blue, this means it
contains no amount of that color or 0%.
However, colors containing RGB values of FF contain the most amount of a color
or 100%. For example, the hexadecimal value for white is #FFFFFF, which means
it contains the most amount of red, green and blue.
The hexadecimal numbers for red are FF0000. To help you to understand this a
little bit better, if we break down the hexadecimal numbers, we will find that
the color red contains FF amount of red, which is the highest amount. It
contains 00 amount of green and 00 amount of blue, both of which are the
lowest.
Vector: What is the difference
between vector and bitmap images
A vector image uses geometrical
formulas to represent images. The other way of representing graphical images is
through bit-maps in which the image is made up of a pattern of dots (note that
bit-maps are often referred to as raster graphics). Programs that allow you to
create and manipulate vector graphics are called draw programs and programs
that manipulate bit-map images are called paint programs.
Vector graphics are more flexible
than bit-maps because they can be easily re-sized. In addition, images stored
as vectors look better when displayed on high resolution printers and monitors.
Bit-map images look the same, regardless of the resolution of the display.
Another advantage of a vector graphic is that they often require less memory
than bit-maps do.
Note that most output devices
including dot matrix printers, laser printers and display monitors are raster
devices (wide format printers being the exception). This means that all
objects, even vector graphics, must be translated into bit-maps (or rasterised)
before being output.
Vector graphics do not need to be
translated in to bit-maps until the last possible minute, after all sizes and
resolutions have been specified.
- A vector in computing, specifically when
talking about malicious code such as viruses or worms, is the method that
this code uses to propagate itself or infect the computer and this sense
is similar to, and derived from, its meaning in biology.
- WYSIWYG: is an acronym for What You See Is What You Get.
The term is used in computing to describe a system in which content
displayed during editing appears very similar to the final output, which
might be a printed document, web page, slide presentation or even the
lighting for a theatrical.
- XML: Extensible Markup Language; a flexible text
format for creating structured computer documents.