L1 graphics

graphics

illustrations,artworks, charts,diagrams,paintings,photographs,cartoons, etc.

computer graphics

pictures and images created and/or manipulated by a computer

use of graphics

grab the attention

of the audience

lead the audience

to take an action

add visual appeal

to the message

history of graphics

Alphabets and numbers

Computer graphics

– the term was first in

the 1960s

– the term was

attributed to William

Fetter

Sketchpad

• the first extensive

interactive drawing

program

• developed by Ivan

Sutherland during

the 1960s

bitmap graphics

also known as raster images

made up of pixels

– pixels are represented by tiny dots

of individual color that make up

the image seen on the screen

Pixels

allasing

the staircase

effect that

appears on

diagonal lines

Disadvantages of Bitmap Graphics

resolution dependent

changing the image to a bigger

size might result to aliasing

image size

the number of pixels in an image

the physical dimension of the

picture

resolution

the density of pixels or the number

of pixels contained in an inch

dpi

ppi

bitmap file formats

TIFF

GIF

JPEG

PNG

vector graphics

stores and displays digital

images as a collection of

graphical elements that can

be individually manipulated

vector graphics

ideal for creating clipart

arts, logos, diagrams, fonts,

and other types of images

that require different sizes

and resolution

advantages of vector graphics

resolution

independent

require less

storage space

as compared to

bitmaps

disadvantage of vector graphics

not supported by many Web browsers

unsuitable for images that require

photorealistic effects

the appearance tends to be more

cartoon-like

vector graphic file formats

AI

CDR

CGM

DWG

EPS

PFB

SVG

TTF

WMF

EMF

graphic software

program or collection of

programs that allows the user

to create, edit, view, and

organize computer graphics