Types of digital Graphics

Unit 78 Digital Graphics in Computer Games

Types of digital Graphics

Raster Images:(bmp, gif, tiff, ipeg)

A Raster graphics are digital images created or captured (for example, by scanning in a photo) as a

set sample of a given space. A raster is a grid or x and y coordinates on a display space. A raster image file is sometimes referred to a bitmap because it contains information that is directly mapped to the display grid. Raster images are made up of 3 Primary colours (blue, red and green) 

This is a Raster image, this image shows the pixels within the image.

Vector images:(psd, wmf, fla, ai)

Vector Images is the use of geometrical primitives such as points, lines, curves, and shapes or polygons-all of which are based on mathematical expressions-to represent images in computer graphics. Vector graphics are not made up of a grid of pixels. Instead, vector graphics are comprised of paths, which are defined by a start and end point.

File Extensions:(Bmp, Png, Gif, Tiff, Jpg, PSD)
A file extension is a file that has been named through a certain way. File extensions helps an operating systems, like windows. A document that has been called "Myhomework.docx" would make the windows know that its that type of document and should be opened with Microsoft word, because of "docx"
Compression:(E.g. Lossy or Lossless)

Lossless and Lossy compression are terms that describe whether or not, in the compression of a file, all original data can be recovered when the file is uncompressed. With lossless compression, every single bit of data that was originally in the file remains after the file is uncompressed.
(All of the information is Completely restored)
This this technique is usually used on spread sheets and word. On the other hand, Lossy compression reduces a file by permanently certain information, especially redundant information. When the file is uncompressed, only part of the original information is still there

Image Capture: (Scanner, Digital Camera, Tablet etc.)

Image capture controls what happens when you connect your iPhone, iPad and digital camera to your computer. For example, you've noticed that iPhoto  always opens as soon as you plug in your iPhone. This action is actually managed in image capture, not iphoto.
The image capture allows you to use your scanner without any other software. Image capture can also be when you take an image through a physical device, i.e. A phone, which you can just take a picture.

Optimizing: (Target image output, Image bit depth, Image resolution, Image dimensions, Compression)

Optimizing an image is really just changing an images size or quality to make the image look better or worst depending on what is changed. Usually this is to give the best effect that the image can give for example: a difference in resolution can determine if the image will be better because of the amount of pixels within the image.
Optimizing can be also be used when trying to improve the efficiency of the image. 

Storage of Image Assets: (File Size, File naming conventions, Asset management)

The Storage of Image Assets is a very useful way to store things like textures, graphics and texts styles so that others can easily access them and assets . This is very useful within the game industry as most companies have lots of different teams who all need to access the same stuff. Being able to transfer files between colleges really speeds up production as you don't need to wait around for the files to transfer. This is important as it helps companies meet deadlines. Its also very important to which file you place your work in as it can affect the opening time.