Introduction to the Computer Graphics

Anton V. Kudinov,Assistant professor of Computer EngineeringDepartment

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