Introduction to the Computer Graphics Anton V. Kudinov, Assistant professor of Computer Engineering Department

Overview  Problem of graphical information representation  Raster and Vector graphics: definitions, properties, advantages and disadvantages  Application fields

Base types of the representation  Raster (bitmap)  Vector (object-oriented)

Raster graphics P i x e l - picture element

1,2,8,3,128,255,255,... 4,3,13,55,67,2,35,44,... 23,2,44,255,0,5,255,... …………… Raster graphics

Parameters of raster images 1. Resolution — pixel density d p i - dots per inch 2. Color depth — amount of bits for representation of each pixel color information

Vector graphics

Advantages of vector graphics over bitmaps  vector graphics are scalable  vector graphics files are usually much smaller than bitmap files

Application fields of vector graphics  computer-aided design (CAD)  animation tools  desktop publishing systems (polygraphy) Application fields of raster graphics  rendering photo-realistic images