10. Converting from OOD Digitised Sound file Often using ‘Save As’ or ‘Export’ function but can also be recorded internally Midi music Bitmap Image Scanning printed text or doing a ‘screen shot’ and pasting it into bitmap image software Text Bitmap Image Called ‘rendering’. Generates a flat (2D) image from a given point of view. 3D Image Bitmap Image Often in ‘Save As’ or ‘Export’ menu of drawing program 2D drawing Discrete data How it can be converted OOD
14. Vector Vs Bitmap Scaling causes pixellation. Can be scaled to large sizes, keeping original quality. Only the image as a whole can be edited. Individual objects can be edited. Are very difficult to convert to vector formats Are easily converted to bitmap formats. File sizes can be large. File sizes are relatively small. Images can be very realistic (e.g. digital photograph). Difficult to create realistic images
15. Vector Vs Bitmap 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). Same appearance in all systems, regardless of hardware or software. Dependent on output hardware or software for appearance & quality. Pixel level editing is allowed - allowing effects such as spray paint, blur, effects and so on. Suitable for natural, hand-drawn looking, realistic images. Suitable for graphic, unrealistic images and designs.
24. Synthesised Sound Data (MIDI) Sets musical tone of note which is determined by the frequency Pitch Meaning Attribute Speed at which the piece of music is set Tempo Rate Determines length of note (number of beats) Duration Controls loudness/amplitude of note Volume Defines instrument being played Instrument
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