1. Task 1
Shaun Warburton

2. Resolution
• Bitmap images are made up of pixels. Image resolution is the number of
pixels per inch (PPI) in the bitmap grid the more the pixels the better
quality image is
• There are two features to every bitmap image – its size meaning the width
and height In inches and resolution meaning the number of pixels per
inch.
• Both of these factors both determine the total number of pixels in a
picture

3. resolution
• Some typical resolutions include:
• 256x256 – found in many cheap cameras, this resolution makes the camera picture
quality really bad almost unacceptable. This resolution holds 65,536 individual
pixels.
• 640x480 – this is found in low end cameras, but mainly this resolution is used for
sending pictures or posting pictures on a website. This is has 307,200 pixels or 0.3
mega pixels*
• 2240x1680 – this resolution is mainly found in 4 megapixel cameras (the current
standard) this allows even bigger printed photos, with good quality for prints up to
16x20 inches. This resolution holds over 3 million pixels.
• The top end cameras mainly use 4064x2704, this is a basic digital camera with 11.1
megapixels which takes a picture at this resolution, plus when you print a picture
you can create a 13.5x9 inch print with no picture quality.
• *megapixels – more than 1 million pixels

4. resolution
• The more the pixels there are within a picture, the more
detailed the image can be displayed at.
• But the fewer pixels there are in an image, the less detailed
the image will be displayed at.
• There are two ways to show an image mainly on screen and
print:
• The standard for screen displays is 72 PPI.
• The standard for Print is 300 PPI.

5. pixels
• In digital imaging, a pixel is the physical point In a raster
image. So it is the smallest element of picture represented on
the screen. The address of a pixel resembles to its physical
co-ordinates.
• The term pixel is in fact short for Picture Element. These small
little dots are what make up the images on digital. The screen
is separated up into a matrix of thousands or even millions of
pixels.

6. pixels
• Data is stored in bits. Each bit symbolizes two colours because
it has the value of 0.1. so basically the more bits per pixel, the
more colours can be presented on the screen. Examples of
colour depth is shown in he table below:
Colour Depth Number Of Colours
1 Bit Colour 2
4 Bit Colour 16
8 Bit Colour 256
16 Bit Colour 65,536
24 Bit Colour 16,777,216
32 Bit Colour 4,294,967,296
48 Bit Colour 281,474,976,710,656

7. pixels
• Defining Colour Depth: since each Bit symbolizes as 2 Colours, it is very easy to
work out the number of colours for the various colour depths. The number of
possible colours would have to be 2 to the power of the number of bits per pixel
for example:
A colour depth of 4 bits would be 2 times itself 4 times:
24 or 2 x 2 x 2 x 2 = 16 colours
A colour depth of 8 bits would be 2 times itself 8 times:
28 or 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 256 colours.
A colour depth of 24 bits would be 2 times itself 24 times:
224 or 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x
2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 x 2 = 16,777,216 colours

8. Light and Effect
• As an alternative of a film, a digital camera has a sensor that
alters light energy into an electrical charges. A digital camera
takes light and focuses it via the lens right to the sensor which
is made out of silicon. It is made up of sections also called a
grid and its made up of tiny photosites that are very sensitive
to light. Each photosite is mainly called a pixel, a reduction of
“picture element”. There are hundreds of millions of these
individual pixels in the sensor of a digital camera.

9. Lighting in games
• Lighting in a game is very important from a gamers
perspective because it is mainly used to create an atmosphere
for example within call of duty zombies the light makes it
become dark and murky to create an atmosphere of fear and
caution. On the other hand to create a more light hearted
atmosphere the developers may create a colourful and
brighter atmosphere.

10. File formats and uses
• Bmp: BMP stands for bitmap. Bitmap is a computer term, it is a type of graphic format. So, if you
have a graphic file, you might see .bmp at the end of the file name.
• Png: PNG stands for portable network graphics. It is a raster image format that allows you to
lossless data compression. PNG supports Grayscale images with or without alpha channel.
• Gif: GIF stands for Graphical interchange format, this supports up to 8 bits per pixel, this also
supports animations and allows a palette of 256 colours for each frame.
• Tiff: TIFF stands tagged image file format, this file is for storing images. It mainly supports image
manipulation programmes, as well as publishing and page layout applications
• Jpg: JPG or JPEG stands for joint photographic experts group, this is a common digital image format
for lossy compression. The amount of compression can be adjusted, this means that the size of the
file versus the quality can be measured.
• Psd: PSD stands for photo shop document, this is a file for Photoshop documents, this format haves
the advantage of sustaining an image with all its current layers when put in to an image editing
software
• Pdf: PDF stands for portable document format, this file is a file format which can be used to signify
documents without application software, hardware, or operating systems. Each PDF file contains a
widespread description of a fixed-layout flat document, including the text, fonts and graphics
• Eps: EPS stands for encapsulated post script, this file is a DCS-Conforming post script document, it’s
intended use is as a graphics file format. These file documents are fairly self contained and are used
to describe an image or drawing.
• Ai: AI stands for Adobe illustrator artwork this sile format is used to display a single page of vector
based drawings within an PDF file format.

11. Compression
• Compression is a method of encoding information with fewer bits than the original
file. Compression can be lossy or lossless. When it comes to lossless, bits are
reduced via identifying statistical redundancy. No information/data will be lost in
lossless compression. On the other hand, lossy compression recognizes
unnecessary information and has it deleted. While data compression is the most
common term used for reducing the size of files.

12. Image capture devices
• Image capture devices are basically used to capture digital images, they
can range from cameras to camcorders to scanners to capture cards.
• Once captured, the digital image can be stored and worked on a computer
using image manipulation software such as Adobe Photoshop or Adobe
Illustrator and for more modest changes, Microsoft Paint.

13. Optimising
Optimising in the Computer sense is the process of adjusting the systems function in order to have it run more
smoothly. In a general sense, optimising will help a computer run more swiftly. This is done by closing down
applications which aren’t essential, or it could cause the computer to use more memory on a single application
in order to improve its performance.
Computer optimisation can happen at a variety of levels, these include:
• Design Level
• Source Code Level
• Build level
• Compile level
• Assembly level

14. Storage
These could be used to increase extra storage space or transport your data around. In relation to Video
Games, Storage space has come in a few forms. On the PS3 and Xbox 360, they resemble a computer and use a
HDD, while also letting Portable HDD’s and Pen Drives. However on older consoles, things such as memory
cards were used and on most portable devices, memory cards like to those used in cameras can be used.

15. Bibliography
• YouTube links:
• Resolution video
• Pixel video
• Light in games
Website Links:
• resolution web link
• Pixel web link
• light and effect in games web link