1. Unit 13: assignment 1-digitalgraphics technology
Name: Munira Mohamed
Subject: creative media
Introduction
This report will be about digital graphics technology. In this I will be explain what digital graphics
technology is and how it relates to producing graphics and images for games. I will be going through
what bitmap and vector images are and will be going through how bitmap and vector images are
made, when they are used and will be explaining the advantages and disadvantages of each one.
Throughout this report, I will also be going through the factors that affect quality and I will be talking
about the output and the organisation of digital graphics technology.
Digital graphics technology
Digital graphics is any images that are created using software or a computer program. Popular
programs to produce digital artwork include Adobe products, 3D studio products, gimp and browserbased software. Digital is also something that can be scanned on the computer.
Bitmap
When you take a picture of an image or scan an image from a magazine than you are producing a
bitmap graphics. Bitmap graphic is collected of many tiny parts, called pixels, which are often many
diverse colours.In the meantime the computer has to store information about every single pixel in
the image; the file size of a bitmap graphic is often quite large. When you resize a bitmap graphic, it
tends to lose quality.
A bitmap is a kind of memory organisation that is used to store digital images. So bitmap images are
a group of bits that form an image. There are four types of bitmap images and these are line art,
grayscale images, and multitones and full colour images. One of the advantages to using a bitmap
image is that it can display a picture realistically.
File extension commonly used
File extension usually are for present applications and uses. If they are resized they will lose quality.
The looks of the bitmap look real and the common file size.bmp, .dib, jpeg, gif, tiff, .png.
Advantages and disadvantages of a bitmap image
The advantage of using a bitmap image is that it can be displayed as a picture realistically. Bitmap
images are created up out of pixels, which is essentially a coloured dot. Correctly positioning the
different coloured dots next to each other will make the illusion of one colour blending into another.
This is easier to get a more real looking image using the format or to have a higher resolution.
The disadvantages of a bitmap image is related with a bitmap image is that it doesn’t resize very
well. It may be better to scale down an image without it getting a loss of clarity and also it is not easy

2. to increase the image without the picture becoming pixelated. Another disadvantage of bitmap
images is that they need higher resolutions and anti-aliasing for a smooth appearance.
Programs used to make these graphics.
The programs that are used to make bitmap graphics is MS paint and adobe Photoshop. MS
Photoshop is a simple overview of MS Paint, with links to basic tutorials. Adobe Photoshop is
Photoshop tips and tutorials from the Adobe website - basic to advanced level.
The smiley face in the top left corner is a bitmap image. Zooming in further, they can be analysed,
with their colours constructed by adding the values for red, green and blue.
Programs that make bitmap image
About the pixel
In distinctive uncompressed bitmaps, image pixels are usually stored with a colour depth of 1, 4, 8,
16, 24, 32, 48, or 64 bits per pixel. Pixels of 8 bits and fewer can signify either grayscale or indexed
colour.
Vector images
Vector graphics are produced in graphics groups and contain of shapes called objects. It is likely to
edit every object distinctly, for example, changing the shape, colour, size and position of the image.
If an item in a vector graphic is kind of large, it does not need a lot of memory on the computer.

3. Thereforesize of the file of a vector graphic is often very insignificant. Vector graphics can be very
scalable for example, when you resize them, it doesn’t misplace quality. Vector images involve of
points, lines and curves, they can form difficult object when they are put together. The objects can
be filled with the solid colours, gradients and patterns. The vector images are mathematical
equations as the programs save instructions on how the image should be drawn, than how it looks.
The image shows the Vector images combine point and line to be an object, therefore the image is not to be
broken when resized (enlarged or reduced), not as Bitmap images (raster graphics).
Vector image
File extension that are commonly used
The file size is small, as the computer stores details of objects, which do not require much memory.
The common file format is .cgm, .svg, .odg, .eps, .xml. If they are resized they will lose quality. The
looks of the bitmap look real and the common file size .bmp, .dib, jpeg, gif, tiff, .png.
Advantages and disadvantages of vector images
The most significant and clear plus point of vector images is their power of scalability. If you try to
increase a bitmap image, the computer can only increase the size of the squares making up the
image area. Also a vector image set of linesrepresent separate and distinct objects, therefore every
object can be re-edited.
The disadvantage of a vector image is that the thin lines may vanish if a vector drawing is reduced
too much. Another disadvantage of this is that little mistakes in a drawing may become visible as
soon as it is enlarged too much.
Programs used to make these graphics
Vector images are produced by programs for example adobe Illustrator, ink scape and CorelDraw.
They are built from lines and curves that are drawn out in ways as technical drawing. The
information about these lines are stored in a as coordinates and directions, when they are saved.
Factors that affect image quality

4. There are the factors that affect the image quality. For example, if they are resized they do not lose
quality in a vector image.
Capturing images
The advantage of drawing into a computer via a sketch is that it lets you draw more accurately. The
image can be resized, providing it being drawn as a vector image.
The disadvantage of capturing an image is that it requires skills and training to use. It also takes
students time to adjust to using the program.
Scanning an image
The advantage of scanning an image is that you can copy something into the computer, than you
alter what you copied. The disadvantage of this is that it has to be stored as bitmap image and
cannot be resized without losing quality.
Taking a photograph
An advantage of taking a photograph is that simply takes a photo which is saved digitally and a
disadvantage of taking a photograph is that its Stored as a bitmap image so will lose quality if resized.
Output
There are several ways of outputting a digital image, two examples of which is Outputs: Print
(Paper), Screen & Online
Print: Printing uses the CYMK Colour Pallet (Cyan, Yellow, Magenta, and Black). The ideal image type
would be bitmap graphics, scaling is not an issue because image size is fixed and you can zoom in.
Screen: Use pixels to display and image, so uses the RGB Colour Pallet (Red, Green, and Blue). The
ideal image type for output on a screen would be vector image because clearer when you zoom in
and so we don’t lose image quality.
Organisation

5. Naming conventions: It is important to save work with appropriate names so you, or others, can find
them. If you are working on a big project as part of a team your files must be organised and named
suitably. For example my assignments are in my Mr.Akitt work folder.
Conclusion
This report explains the advantages and disadvantages of a bitmap and vector image, it also outlines
the programs used to make the graphics, the factor that affect image quality, pixels and the file
extension that are commonly used in vector and bitmap graphics. The report also outlines the
advantages and disadvantages of capturing image, scanning an image and taking a photograph. It
shows how to be organised and the output of digital graphic technology. This report provides various
images to help understand the digital technology and how it works. The report helped me gain
numerous skills with gathering helpful information and help me understand the different types of
digital technology. These skills can help me with my coursework and my research skills.