Coding text & graphics
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What is bit mapped graphics
This consists of grid of pixels, each pixel stores a colour value.
What is resolution
This is a number of pixels inan image , high resolution more pixels, more details and also lager file size
What is metadata
This is addtional information stored in image files such as width and height , colour depth
What is vector graphics
Represnts images using geometric shsapes such as lines, curves , instead of storing pixels
What are vector object properties
Position Size Fill colour Stroke x and y coordinates of the object
What the the common vector primitives
Line rectangle circle polygon
difference in bitmap and vector in terms of storage, scaling , file size , editing
Bitmap Grid of pixel colours Quality loss when enlarged Excellent captures complex colurs editing indivual pixels Large file sizes for a high resolution Vector Mathematical object descriptions Infinitely scalable, no quality loss File size can be smaller Edits individual objects
What is the nyquist theorem
The sample rate must be double the maximum frequency