Image File Types

We were asked to write at the different image file types. The ones were going to research on are:
*GIF Files
*JPEG Files
*Animated Files
*MPEG Files
*Shockwave Files


GIF Files
The Graphics Interchange Format (GIF) is a bitmap image format that was introduced by CompuServe in 1987,it is also a  bitmap image format for pictures with up to 256 distinct colors.

JPEG Files
In computing, JPEG (, ) (named after the Joint Photographic Experts Group who created the standard) is a commonly used method of lossy compression for photographic images.

Animated Files

A simulation of movement created by displaying a series of pictures, or frames

MPEG Files

Short for Moving Picture Experts Group, and pronounced m-peg, is a working group of the ISO. The term also refers to the family of digital video compression standards and file formats developed by the group. MPEG generally produces better-quality video than competing formats, such as Video for Windows, Indeo and QuickTime.

Shockwave Files
SWF (pronounced /ˈswɪf/ swif)^[1] is a file format for multimedia, vector graphics and ActionScript in the Adobe Flash environment.^[2] Originating with FutureWave Software, then transferred to Macromedia, and then coming under the control of Adobe, SWF files can contain animations or applets of varying degrees of interactivity and function.

COLOUR DEPTH
-GIF Files

 24 bits

-JPEG Files

More than GIF

32 colors GIF 11k	17 million colors JPG 22k

-Animated Files

16bits

-MPEG Files

24 bits

-Shockwave Files

8Bits

FILE SIZES

 GIF files use a color pallette with a fixed number of colors (256 colors to be exact). Gif files are typically used where there are no gradients and/or where there is a limited number of colors (as in the orange and white example that you will see later).

JPG files are compressed image files but there are different levels of compression. You select which is best for your application. Jpg files are most commonly used for photographs. They are supported by virtually every application.

Although this section is labeled 'still image Files', there is one that's not exactly a 'still' image. Animated gifs are a string of gif files. They are displayed one after the other and will look like a crude video. They are typically used for advertising banners (you know the awful flashing ones that drive you mad).

VECTOR OR BITMAPPED??

 Vector images (also known as raster images) are made up of pixels in a grid. Pixels are picture elements; tiny dots of individual color that make up what you see on your screen.images are made up of many individual, scalable objects.

Bitmapped objects are defined by mathematical equations rather than pixels, so they always render at the highest quality. Objects may consist of lines, curves, and shapes with editable attributes such as color, fill, and outline.