Pixel resolution determines the number of distinct pixels that can be displayed. Vector graphics use geometrical primitives based on mathematical expressions, while raster graphics represent images as a grid of pixels. File formats specify how bits are used to encode image information. Common formats include GIF for images with a limited color palette, JPEG for photographic images using lossy compression, TIFF for bitmaps, EPS for vector graphics and bitmaps, BMP for Windows graphics, PNG for truecolor images, and PSD for layered Photoshop files. Data compression reduces file size by eliminating statistical redundancy (lossless) or removing marginally important information (lossy). Image capture devices like digital cameras and scanners convert images to digital formats,

1. Task 3- Technical File
Pixel And Resolution:
In digital imaging, a pixel, or pel,
picture element is a physical point in a
raster image, or the smallest addressable
element in a display device; so it is the
smallest controllable element of a picture
represented on the screen.
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.

2. Vector and Raster images:
Vector graphics is the use of
geometrical primitives such as
points, lines, curves, and shapes or
polygon(s), which are all based on
mathematical expressions, to
represent images in computer
graphics. "Vector", in this context,
implies more than a straight line.
In computer graphics, a raster
graphics image, or bitmap, is a dot
matrix data structure representing
a generally rectangular grid of
pixels, or points of colour, viewable
via a monitor, paper, or other
display medium. Raster images are
stored in image files with varying
formats

3. File Formats And uses:
A file format is a standard way that
information is encoded for storage
in a computer file. A file format
specifies how bits are used to
encode information in a digital
storage medium. File formats may
be either proprietary or free and
may be either unpublished or open.

4. GIF - Graphics Interchange Format - Images using a fixed color
palette (limited to only 256 colours - not the full spectrum of
colors available to your monitor). The GIF format uses compression
for smaller files and faster downloads. This format is best for
images with solid colors or areas of uniform colour such as
illustrations and logos.
JPEG - Joint Photographic Experts Group - Used for photographic
(continuous tone) images. Unlike GIF files the JPEG format can take
advantage of the full spectrum of colours available to your monitor.
The JPEG format also uses compression for smaller files and faster
downloads. However, unlike the compression method used in GIF
files, the JPEG compression is "lossy" which means it discards data
in the process. Once a file is saved in JPEG format the data is
permanently lost. If you want all the image data available for future
use, save the image using no compression or "lossless"
compression and make JPEG copies from it.

5. TIFF - Tagged-Image File Format - Used for bitmaps only. The
TIFF format is supported by virtually all graphics applications.
EPS - Encapsulated PostScript® - A file format used for both
vector graphics and bitmaps. EPS files contain a PostScript
description of the graphic data within them. EPS files are
unique in that you can use them for vector graphics, bitmap
images, type or even entire pages.
BMP - The BMP file format (Windows bitmap) handles graphics files within the
Microsoft Windows OS. Typically, BMP files are uncompressed, hence they are
large; the advantage is their simplicity and wide acceptance in Windows
programs.
PNG - The PNG (Portable Network Graphics) file format was created as the
free, open-source successor to GIF. The PNG file format supports truecolor (16
million colours) while GIF supports only 256 colors. The PNG file excels when the
image has large, uniformly colored areas. The lossless PNG format is best suited
for editing pictures, and the lossy formats, like JPG, are best for the final
distribution of photographic images, because in this case JPG files are usually
smaller than PNG files. The Adam7-interlacing allows an early preview, even
when only a small percentage of the image data has been transmitted.

6. 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,
colour spaces, ICC profiles, CMYK Mode (used for commercial printing),
transparency, text, alpha channels and spot colours, clipping paths, and
duotone settings. This is in contrast to many other file formats (e.g. .JPG or
.GIF) that restrict content to provide streamlined, predictable functionality. A
PSD file has a maximum height and width of 30,000 pixels, and a length limit
of 2 Gigabytes.

7. 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 be
lossy or lossless. Lossless compression reduces bits by
identifying and eliminating statistical redundancy. No
information is lost in lossless compression. Lossy
compression reduces bits by identifying marginally
important information and removing it. The process of
reducing the size of a data file is popularly referred to as
data compression, although its formal name is source
coding (coding done at the source of the data, before it is
stored or transmitted).

8. Image capture devices:
The process of using devices such as
digital cameras or scanners to capture
images in a digital format. The resulting
files are then further processed to arrive
at a final image.
Optimising:

9. Storage and asset Management:
Storage Management The administration of any or all of
backup, archival, disaster recovery and hierarchical storage
management (HSM) procedures within an organization
Asset management, broadly defined, refers to any system that
monitors and maintains things of value to an entity or group. It
may apply to both tangible assets such as buildings and to
intangible concepts such as intellectual property and goodwill.
Asset management is a systematic process of
operating, maintaining, upgrading, and disposing of assets
cost-effectively. Alternative views of asset management in the
engineering environment are: The practice of managing assets
to achieve the greatest return (particularly useful for
productive assets such as plant and equipment), and the
process of monitoring and maintaining facilities systems, with
the objective of providing the best possible service to users.