Digital Graphics File FormatsYour name here

Raster Graphics

• Give a definition of Raster GraphicsRaster graphics are a type of digital graphic that are made up of bitmaps, these bitmaps are then made up of pixels, these pixels each record the colour information that make up the sections of the image, the pixels are fixed in place so when resizing an image, distortion of the image will occur.

Vector Graphics• Give a definition of Vector GraphicsVector graphics are the other type of digital graphics, these are made up of vectors or also known as paths and strokes, these paths all have a start and end point, as well as points, curves and angles between them. This allows the paths to become a number of things whether that be a straight line, triangle or even a curvy shape. Vectors differ from raster graphics as they can be resized with losing any definition, making them ideal to be used in Logos for organisations, by allowing the image logo to either be huge or tiny depending on how they want their logo presented.

Raster Graphics

JPEGStands For Joint Photographic Experts Group

Used For/Example JPEG’s are used globally and are very common, one of the most common being used to format images on social networking sites.

Advantage JPEG’s have a very small file size which means they are compressed down so that more memory space can be saved when storing a large amount.

Disadvantage JPEG’s lose image quality the longer they are stored, every time the file is opened and closed bits of data are lost due to the compression and decompression of the file.

TIFFStands For Tagged Image File Format

Used For/Example Commonly found in work done by graphic designers and desktop publishing.

Advantage In Adobe InDesign TIFF files can be used to save multiple page documents to a single TIFF file. They also have the option of lossless compression which means image quality isn’t lost when opening files.

Disadvantage TIFF files size can be very large meaning that computer memory can by taken up quickly if a large amount of TIFF files are saved.

GIFStands For Graphics Interchange Format

Used For/Example GIF’s are used for short digital animations which are made up of a series of pictures that have been looped to appear like a video. They are very commonly used on the internet.

Advantage GIF’s can be used as a replacement for videos as they have a much smaller files size then a video meaning less space is taken up.

Disadvantage The quality of the animations are far from normal videos and may appear stuttered or jumpy.

BMPStands For Bitmap image file

Used For/Example

Advantage There is no loss in compression with BMP documents so when opening BMP files image quality remains intact.

Disadvantage BMP files have a rather large file size meaning much more space is taken up when storing them, they can also be troubling to send to people as the file size can be to big for email, especially if there is a number of them being sent.

Vector Graphics

PSDStands For Photoshop Document

Used For/Example Photoshop documents are used for image manipulation, meaning they can be found on front covers for magazines or posters.

Advantage A photoshop document allows you to save a number of layers to your photo allowing you to edit and manipulate original images.

Disadvantage They are a type of vector digital graphics which means that they have a large file size.

AIStands For Adobe Illustrator Art

Used For/Example They can be used commonly for logo design and creation or graphics to represent a company/organisation.

Advantage When changing the scale of an AI file there is no loss of definition in the image as it is a vector graphic.

Disadvantage To view an AI file it requires specialist software specifically for the document, this can prove to open which limits where it can be viewed.

FLAStands For Flash File

Used For/Example Flash files are mainly used to create animations and games

Advantage Flash files are handing in creating high quality files containing an animation or game and still have a small file size. Flash files can also include video and sound.

Disadvantage A limited amount of software can open a FLA file as it is a specialist file.

WMFStands For Windows Metafile

Used For/Example Similar to AI files windows metafiles are also used in logo design and creation, clipart is an example of this.

Advantage As they are similar to AI files they are useful in being able to be scaled larger or smaller and still remain exact same definition.

Disadvantage A WMF is only available on windows platforms.

File Format Capture and Optimising

CompressionDefinition lossy compression is the way file sizes are

reduced by reducing the amount of information that is saved.

Advantage This is the method in which files sizes are reduced to conserve save space.

Disadvantage The higher the compression of the file the more pixelated the image becomes.

Image CaptureMethod Scanner

How is it used for image capture of graphics

An existing image or object Is placed on the scanner facing down, the top is closed an the object or image is scanned and uploaded to a computer or printed.

Method CameraHow is it used for image capture of

graphicsCameras are used to captured light going inside them and reflecting the chosen image onto a light sensitive scanner which then instantly presents it digitally to view.

Method Graphics TabletHow is it used for image capture of

graphicsTablets are used similar to painting canvases, however digitally, a mouse is controlled like a pen which allows users to create illustrations.

OptimisingWhy would you optimise? when uploading an image to the internet

optimising it beforehand ensures the image is easing viewing on the web.

How can you optimise? You can use Adobe Photoshop to optimise an image by selecting image size and changing it. This can involve reducing image size, reducing bit depth or reducing resolution.

Advantage to optimising Images that have been optimised have a smaller file size then files that haven’t been optimised which means downloads when opening the website take longer.

Disadvantage to optimising Compression causes images to lose quality and appear more pixelated because less pixels are saved each time the file is compressed.

Storage

File SizeWhat could affect a Working Scale (Photoshop) document file size?

With PSD files it allows you to add multiple layers to an image, so if an image has a high amount of layers then the file size will be increased.

How could you reduce the file size of a Working Scale document without

affecting quality?

A document with a large file size can be reduced by compressing the file, this makes it smaller by compressing the files information down by saving less information.

What is an advantage of scaling up images before exporting?

The advantage of this is more detail can be seen within the image.

What is a disadvantage of scaling up images before exporting?

The size of the file increases when the image is scaled up.

File Naming ConventionsWhat naming conventions could you use when creating your video game assets?

I will ensure that my work is organised efficiently so that it makes it easier for me to locate work. I will have a file for the pages and a file for the extra work on Photoshop so my work dose not get confusing, In Photoshop I will name the layers so I know what layer marks what element on my PSD document.

Why is it a good idea to accurately name your assets?

Name your assets is helpful as it allows you to organise your work better and ensure you don’t have any files unnamed making it easier to locate certain files.

Asset ManagementWhy would you use folders when storing

your assets?It is important to use folders to organise your work as it means you can segregate work in to specific areas and keep work that’s related to one another together.

What folders would you create and what would you save within them

To create I folder in my documents it involves right clicking and selecting new folder once done I can then name the folder and move whatever work I want into that folder, for example this section of my course is print so I can create its own folder to store all my print documents inside.