The document discusses key concepts related to digital images including pixels and resolution, vector and raster images, common file formats and their uses, compression techniques, image capture devices, optimizing images, and storage and asset management of digital files. Pixels make up digital images and resolution refers to pixel count, with higher resolution providing more detail. Vector images scale smoothly while raster images lose clarity when scaled. Common file formats include BMP, PNG, GIF, TIFF, JPG, PSD, PDF, EPS and AI, each suited for different image types and uses. Compression reduces file sizes by eliminating unnecessary data or removing marginally important information. Devices like cameras and screen capture tools are used to capture digital images. Optimizing improves efficiency

1. Task 3 – Technical File

2. Pixel and resolution
• Pixel - short for Picture Element, a pixel is a single
point in a graphic image. Graphics monitors
display pictures by dividing the display screen
into thousands (or millions) of pixels, arranged in
rows and columns. The pixels are so close
together that they appear connected.
• Resolution - is often used for a pixel count in
digital imaging, higher resolution means more
image detail.

3. Vector and Raster Images
• Raster images are based on pixels and
thus scale with loss of clarity, while
vector-based images can be scaled by
any amount without degrading quality
because, vector graphics is based on
images made up of paths, or strokes
through control points, its these points
that define the parameters such as,
colour, shape, thickness and a fill.

4. File formats and uses
• Bmp – bitmap image file, used to store bitmap digital images
• Png – portable network graphics, used as a bitmapped image format that
uses lossless data compression, supports transparency.
• Gif – graphics interchange format, bitmap image format, supports
animations
• Tiff – tagged image file format, file format for storing images
• Jpg/JPEG – image file format, used for its compression of images, also
supports layered images
• Psd – Photoshop document, stores an image with support for most editing
options in Photoshop
• Pdf – portable document format, file format used to show document in
software, hardware and operating systems.
• Eps – encapsulated postscript, standard format for importing and
exporting postscript language files
• Ai – adobe illustrator artwork, proprietary file format, representing sing-
page vector based drawing

5. Compression
• Compression is where a file is reduced in bit
size to help reduce resources usage, such as
hard drive space.
• There is lossless compression ( eliminates not
needed data) and lossy compression
(identifies marginally important information
and removes it)

6. Image capture devices
• Devices that capture images such as, camera’s,
software that take screenshots of your
computer screen, or simply a computers
automatic print screen command on the
keyboard

7. Optimising
• The process of modifying a software system to
make some aspect of it work more efficiently
or use fewer resources.
• In general, a computer program may be
optimized so that it executes more rapidly, or
is capable of operating with less memory
storage or other resources.

8. Storage and asset management
• Asset management refers to being in control
of your digital files – renaming, backing up,
grouping, archiving, maintaining, and
exporting them to other formats.