Image File Types

Image File Formats

JPEG (JPG) Jay-Peg
Pros

• Most common file type.
• Uses compression to reduce file size.
• Can use different amounts of compression.
• Good for photo that needto have a smallish file size.

Cons

• The more it is compressed the smaller the file will be the poorer the image quality will be.
• Uses a lossy compression technique.
• Not so good for saving something that you will want to work on again.

GIF (Graphics Interchange Format)

Pros

• Good for drawings/ line art.
• Pretty Good image sizes. 

Cons

• Not so good for photos (256 colours max).
• Lossless format.





 PNG (Portable Network Graphics)

Pros

• Good for photos
• Transparency
• Lossless compression-images that keep their quality

Cons

• Larger file sizes
• Doesn't store any additional information

PSD (PhotoShop)

Pros

Very high quality.

Stores a lot of information with the image filesuch as..

• Layers
• Masks
• Transparency

Cons

Lossless compression



 TIF (Tagged Image File)

Pros

• Can store information along with the image.
• High Quality

Cons

• Large file sizes
• Usually uses a lossless compression format.

BMP (short for Bitmap)

Pros

High quality

Cons

Doesn't use any compression at all, so big files!

Only really used by Microsoft /Microsoft Paint



2D graphics in computer games

2D Sprites

What are they? 2D sprites move through different images to create an animation for a character during gameplay.

What do they look like ? Sprites make up an object or charcter usually a set of still images.

What is the purpose of it ? The purpose of 2D sprites is to give the impression of movement through animation usually with a character.

3D Isometric Sprites

What are they ? 3D isometric sprites are the same as normal sprites but are actuall made to look 3D.

What do they look like ? 3D isometric sprites are normal sprites made to look 3D.

What is the purpose of it ? The purpose of 3D isometric sprites is to trick the player into believing it to be a 3D image.

Concept Art

What are they ? Concept art is an illistration where it shows a design or idea shown in a certain mood before it is put out as the final product.

What do they look like ? Concept art is a visual development that is an illustrated image.

What is the purpose of it ? The purpose of concept art is to show an idea or theme through an illustrated image which is then developed on.  



Textures

What are they? Concept art is 2D image wrapped around a 3D model usually to give it colour.
What do they look like? Textures are usually patterns of colours.
What is the purpose of it? The purpose of the textures is to add colour to 3D models to give it more character.