Types of Digital Graphics

Unit 78 Digital Graphics in Computer Games Design 

Lecturer: Josh Rai

Raster Images (bmp, gif, tiff, jpeg) Raster Images are images made up of Pixels which each contain a percentage of the colours blue, green and red which combine to make the actual colour seen. Raster images are sometimes called bitmaps as they contain info that is mapped to the display grid

Vector Images (psd, wmf, fla, ai)

Vector images don't use a grid of pixels and instead use vectors, sometimes referred to as paths,

File Extensions- Bmp, Png, Gif, Tiff, Jpg, PSD

file extensions are used to show the operating system what to use to open the documents
eg Jpg- mainly used to store  photos http://fileinfo.com/extension/jpg
docx means that the file must be opened in word

Compression- Lossy or Lossless
Lossy means that the image has been compressed which will mean it loses some quality, this is used to make the file take up less space, lossless means that nothing is lost, this can be used in big budget games to save money.

Image Capture- Scanner, Digital Camera, Tablet
Image capture is when you take a photograph and use it in the game generally as a background

Optimising-Target Image output, Image bit depth, Image resolution, Image dimensions, Compression

Editing the image to make it better and make it work on a wider range of computers. as some may not be able to 

Storage of Image Assets- File size, File naming conventions, Asset management
Storage of image assets is a way of storing textures, graphics or text styles so that they can be easily accessed by others, this is especially helpful as most games will need teams to make it and this will allow them to share the files