graphics and multimedia 2003

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Graphics


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The BasicsDefinition what is graphics?

The computers capability to mimic traditional artistsmedia.

Allows the artist to do with the aid of a computer whatthey once did with paints, brushes, and dark room

equipment.

y Broad Types

y Static Images

y Multimedia content ( moving images and sound ) 2


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GRAPHIC FILE FORMATSy TWO CATEGORIES

BIT MAPS It is a grid filled with one or more color.A pixel is an individual cell that makes up the image.

USAGE/ADVANTAGES

Tiling textures for web pages

Create 3-d surfaces

Create life like images

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VECTORS-

y These are lines drawn from one point to another.

yA set of vectors are mathematical equations describing thesize, thickness, position, color, or fill of those lines or closed

graphical shapes.

USAGE/ADVANTAGE

y Saves time and calculating effort.

y Flexibility of designing.

y Reposition of elements.

y

Ability to create illustrative look. 4


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FILE FORMATSyA file format is a standardized method of encoding

data for storage.

It denotes-y What kind of data?

y How the data is organized?

Related concepts

Compatible

incompatible5


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COMMON FILE FORMATS

y BMP- Bit map

y PICT- Picturey TIFF- Tagged image file format

yJPEG- Joint photographic expert group

y GIF- Graphic interchange format

y EMF- Window enhanced metafile

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GRAPHICIMAGELOADINGAIDS SCANNERS Transfers image directly to the computer.

DIGITAL CAMERAS Transfers digitalized images.

DIGITAL VEDIO CAMERA- Captures full motionvideos on optical discs, transfer using a storage

medium such as DVD.

CLIP ART- Features built in clip art medium totransfer images.

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GRAPHIC SOFTWARE

PAINT PROGRAMS

DRAWPROGRAMS PHOTO- EDITING PROGRAMS

COMPUTERAIDED DESIGN

3 D MODELLING AND ANIMATION

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PAINT PROGRAMS y These keep track or every pixel on the screen.

y They range from very simple tools to highly complex ones.

y They are bit map based.y They perform tasks impossible by traditional media.

DRAW PROGRAMS y T

hese are vector based.y It is referred to as object oriented program, as each item is treated as a distinct

object.

y Simply by dragging or clicking the image the shape can be changed.

y It provides accuracy and flexibility.

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PHOTOEDITING PROGRAMS-y These resemble a photographers dark room tasks.

y They edit images at pixel level, thereby control exactly how a pic will look.

y They are also used to edit non photo graphic images.y They can create images and pictures from scratch.

3 D ANIMATION SOFTWAREy

Digital 3-d objects can be modified to any shape using electronic tools.y Hand drawing series of images replaced by computer generated imaging(CGI).

y Ability to animate 3 dimensional characters and create photo realistic scenes.

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y COMPUTERAIDED DESIGN

Computerized version of the hand drafting process.

Used extensively in fields such as engineering and architecture.

They provide high degree of precision.

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THANK YOU

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graphics and multimedia 2003

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