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5. 3 Bitmapped & V.G

Bitmapped and Vector Graphics

Pixel The smallest addressable area / smallest solid block colour in an image
Bitmap Created when pixels of an image are mapped to positions in memory that store binary codes representing colour of each pixel
Resolution of a VDU screen A quantity expressed as the no. of pixels per row by the no. of pixels per column
Resolution of an image No. of dots / pixels per inch or cm
Colour depth No. of bits used to represent colour of a single pixel in a bitmapped image
Vector Graphic Records geometric and other information about the objects that make up an image
Object A component of a vector graphic, such as: line, a rectangle or a circle
Drawing list the list of drawing commands that recreate a vector graphic
Property of a vector graphic object, describes things such as the: size, direction, thickness, shading, font size or typeface.
Data compression squeezes data into a smaller number of bytes than the data would occupy if uncompressed.
Created by: LexiL



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