2. Pixel And Resolution
• The display resolution of a digital television,
computer monitor or display device is the
number of distinct pixels in each dimension
that can be displayed. It can be an ambiguous
term especially as the displayed resolution is
controlled by different factors in cathode ray
tube (CRT), Flat panel display which includes
Liquid crystal displays, or projection displays
using fixed picture-element (pixel) arrays.
3. Vector And Raster Images
• There are two kinds of computer graphics - raster
(composed of pixels) and vector (composed of
paths). Raster images are more commonly called
bitmap images. A bitmap image uses a grid of
individual pixels where each pixel can be a
different colour or shade. Bitmaps are composed
of pixels. Vector graphics use mathematical
relationships between points and the paths
connecting them to describe an image. Vector
graphics are composed of paths.
4. File Formats and Uses
• BMP - The BMP file format, also known as bitmap image file or device independent bitmap (DIB) file format or simply a
bitmap, is a raster graphics image file format used to store bitmap digital images, independently of the display device (such
as a graphics adapter), especially on Microsoft Windows and OS/2 operating systems.
• PNG - Portable Network Graphics is a raster graphics file format that supports lossless data compression. PNG was created
as an improved, non-patented replacement for Graphics Interchange Format (GIF).
• GIF- The Graphics Interchange Format 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.
• TIFF - TIFF (originally standing for Tagged Image File Format) is a file format for storing images, popular among graphic
artists, the publishing industry, and both amateur and professional photographers in general
• JPG - In computing, JPEG is a commonly used method of lossy compression for digital photography (image). The degree of
compression can be adjusted, allowing a selectable trade-off between storage size and image quality
• PSD - Photoshop files have default file extension as .PSD, which stands for "Photoshop Document." A PSD file stores an
image with support for most imaging options available in Photoshop. These include layers with masks, color spaces, ICC
profiles, CMYK Mode (used for commercial printing), transparency, text, alpha channels and spot colors, clipping paths, and
duotone settings.
• PDF - Portable Document Format (PDF) is a file format used to represent documents in a manner independent of application
software, hardware, and operating systems.
• EPS - Encapsulated PostScript, or EPS, is a DSC-conforming PostScript document with additional restrictions which is
intended to be usable as a graphics file format.
• AI - Adobe Illustrator Artwork (AI) is a proprietary file format developed by Adobe Systems for representing single-page
vector-based drawings in either the EPS or PDF formats. The .ai filename extension is used by Adobe Illustrator.
5. Compression
• In computer science and information theory,
data compression, source coding, or bit-rate
reduction involves encoding information using
fewer bits than the original representation.
Compression can be either lossy or lossless.
Lossless compression reduces bits by
identifying and eliminating statistical
redundancy.
6. Optimising
• Optimising is labelling things to make it easier
to find, for example if your making a game and
have a 10 different types of trees you would
call them Tree001 instead of tree with long
branch
7. Storage And Asset Management
• Storage and asset management is basically
storing files into appropriate folders so things
are easier to find.
