Thopon Chowdhury 12C
Unit 13 Assignment 1 Digital Graphics
In this report I will be analysing digital graphics, what they are and its digital images and
texts that are created and scanned on the computer. Furthermore I will be looking at how in
which this relates to creating graphics and images for various games that are created across
the world. Digital graphics technology is the types of digital graphics used to create digital
Bitmap is made up of pixels resolution; it cannot be scaled up without losing quality.
When you resize a bitmap graphic, it tends to lose quality.
Common bitmap programmes: paint, Photoshop.
Common bitmap images: photographs and paintings.
Vector is made of points, lines and curves. The image is built and
displayed through mathematical expressions. It can be scaled (re-
sized) and will not lose clarity or quality. Resolution, independent
can be printed at any resolution.
Common file formats: ai, cdr, .ps, .pdfs
Common vector graphics programmes:
Adobe illustrator, CorelDraw, freehand
Factors That Affect Image Quality
There are many factors that affect the quality of an image. One of
these crucial factors is the process of compression. Compression is
where you apply algorithm files that reduce their size. E.g. when
someone sends an email and intends to send a few files they put it in a zip and when the file
is sent the receiver opens the zip to see the files, this is compression.
This is a zip file that is compressed by using algorithms to save files.
There are many different ways to capture an image. Image capture is the process of
obtaining a digital image from a vision sensor, such as a camera. One of the most common
and significant ways of capturing an image in the modern day is to take a picture with a
digital camera but there are also other forms of capturing image. Another form of image
capturing is scanning. Scanning works many ways e.g. if anyone hand draws something and
scans it to a computer. This cannot be resized and is a bitmap image. Lastly another form of
image capturing is drawing an image digitally as a vector image. This means it can be resized
without losing any quality.
Thisis an image taken bya digital camera.Thisisa commontype of image capturing.
Thisis a bitmapimage.Thiscannotbe resizedbecause itisscanned.
There are two main ways that an image can be outputted yet this all depends on what type
of image this is.
There are different colour styles that different devices use. E.g. printer uses the colour code
of CYMK (cyan, yellow, magneta and black.
RGB (red, green and blue) is a colour model that is in use on computer monitors.
The storage means the file size. The file size all depends on the resolution and the size of the
image. The larger the file is the:
Longer it will take to upload and download from your email.
Takes up a larger amount of space on your computer
Harder to email
A Good way of keeping everything in your computer organized and easy to find
is to structureyour files in specific folders. This is a convenient way of locating
documents, work and different files.
To conclude this reporthas contained a lot of information and helped me to
specify the differenceof digital graphics like bitmap and vector images and has
also gaveme an idea of how they work and pixel structureand what factors
affect the image quality to separate a bitmap image froma vector image. This
will benefit me in the coursebecause it gives me an idea of whattype of digital
image to useand when to use each of these. It has also given me other types
of information that will help me in the future e.g. storage.