Object Orientated Data. Topic 5: Multimedia Technology. Object Orientated Data Types. Created on a computer not by sampling real world information Details are stored on the attributes ( properties ) of each object that is stored in the file.
Although OOD can be created using nothing but a simple text editor there are specialised input devices to help users create and edit them
Can be scaled to large sizes, keeping original quality.
Scaling causes pixellation.
Only the image as a whole can be edited.
Individual objects can be edited.
Are easily converted to bitmap formats.
Are very difficult to convert to vector formats
File sizes are relatively small.
File sizes can be large.
Images can be very realistic (e.g. digital photograph).
Difficult to create realistic images
Size of image can be increased keeping quality and file size the same.
Increasing the image size needs re-sampling and increases the file size.
Only individual objects can be edited (it is sometimes impossible to edit only part of the object).
Pixel level editing is allowed - allowing effects such as spray paint, blur, effects and so on.
Same appearance in all systems, regardless of hardware or software.
Dependent on output hardware or software for appearance & quality.
Suitable for natural, hand-drawn looking, realistic images.
Suitable for graphic, unrealistic images and designs.
Drawing : SVG
3D : VRML/WML
Digitised sound : MIDI
Scalable Vector Graphics (SVG)
Virtual Reality Modelling Language/ World Representation Language (VRML/WRL)
Smaller file size
All aspects of music can be edited
Effects can be applied to individual instruments
There is no interference from the recording
Never sounds as realistic as digitised sound
Dependent on soundcard for quality
Does not contain vocals
Fewer effects can be applied to soundSynthesised Sound Data (MIDI)