Image File Formats-Descriptions

8/9/2019 Image File Formats-Descriptions

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Graphic FileGraphic FileFormatsFormats


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ObjectivesObjectives Understand the difference between two

major categories of computer graphic

images Investigate the differences betweenvarious file formats

Generalize formats to the type of software

that creates them Establish a philosophy of use for various

graphic file formats


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A usabledescription ofany software's

proprietary fileformat.

Native File FormatNative File Format


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wo !ategories ofwo !ategories of

FormatsFormats

Bitmapped Vector


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"itmapped Formats"itmapped Formats Images are

created byindividual

pixels

displayed invarious colors.


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"itmapped Formats"itmapped Formats Remember,

eac pixel canold up to !"bits #$ bytes%

of colorinformation


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"itmapped Formats"itmapped Formats Bitmapped

formats ave a

fixed resolution &an () be

resi*ed witout

some effects onte clarity of teimage


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"itmapped Formats"itmapped Formats Bitmapped

formats arebest suited for

+potograpic

-uality images


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"itmapped Formats"itmapped Formats canners and

digitalcamerasac-uire

images inbitmappedformats


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!ommon "itmapped!ommon "itmapped

File FormatsFile Formats )I/

012

B31

1I&

2I/

12

14

1&5


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IF FormatIF Format agged Image File

format.

tandard between3A& and 1& bitmapgrapics.

6andles multiple

cannel files. i.e. R2B

i.e. Alpa &annels


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IF FormatIF Format 7rites a 8eader8

tat tells software

wat informationis contained.

6eader mayincrease file si*e.9 ot really a

problem witmodern ardware


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IF FormatIF Format :ses a ;


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#$G %#peg& Format#$G %#peg& Format #oint $otograpic

Experts Group

A file format andcompressionsceme.

>merging as a

standard format forpotos.

Internet use.


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#$G %#peg& Format#$G %#peg& Format +;ossy

compression?

Reduces dataduring save.

4ata loss can becontrolled.

&an reduce file si*ein a ratio between@@ and !@.


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"'$ Format"'$ Format 3icrosoft native file

format

1& system compatible

9 4(

9 7indows

9 (C!

o 3A& compatibility.


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"'$ Format"'$ Format 1otosop encodes to@, ", D, !" bit color

but .bmp can not

support cannels.

o file space savings

for potos wit .bmp.

? )ry a 012E


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$I! %$ict& Format$I! %$ict& Format A 3A& native file

format.

ot 1& operatingsystem compatible.

&an do !" bit color plus

an extra D bits.

Any 3A& monitor can

display $! bit 1I&) files


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$I! Format$I! Format 3A& system

format used to

excange datavia clipboard.


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GIF FormatGIF Format GrapicsIntercange Format.

&reated by&ompuserve to

speed downloading

of grapics. ;imited to !FG colors.

&ompression format


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GIF FormatGIF Format &an be bot

interlaced and

non?interlaced &ommon Internet

file format9 DH

9 Da #interlaced,wit onetransparent color%


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$NG Format$NG Format $ortable NetworJ

Grapics

ew format targetedfor Internet use

&an support up to "Dbit color

Big compressionfactor

&an support multipletransparent colors


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$() Format$() Format

1otosop native file

format.

upports all image typesfrom line art to potos.

Increasing compatibility

wit oter software.


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$() Format$() Format

14 can old an infiniteamount of cannelsE

>ac layer can old !"cannels.

Infinite amount of layersare possible.

ub=ect to availableRA3EEEE


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'ulti*!hannel to +GIF'ulti*!hannel to +GIF

1otosop R2B

Indexed !FG

.2I/

!onvert to,

(ave as,


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$!- Format$!- Format

/rom


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$!- Format$!- Format

1otosop onlysupports 1&5

version FE &onvert .pcx to

R2B to use most1otosop tools.

1& 1aintbrusformat.


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.oda/ $hoto !) * $!)

.oda/ $hoto !) * $!)

KodaJ format for

images stored on

KodaJ 1oto &4. :ses L&& color

model.

;imited to fiveimage si*es.


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.oda/ $hoto !) * $!)

.oda/ $hoto !) * $!)

1otosop

opens as a ;AB

color model.

1otosop can

not save as a1oto&4

format.


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"itmapped Formats"itmapped Formats0nd $i1els0nd $i1els


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2ector Formats2ector Formats

Images are a series

of pixels tat are

8turned on8 basedon a matematical

formula.

3%1 4 y&z


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Vector /ormats are

basically defined by

sapes and lines o more tan !FG

colors

&lip Art


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ot resolution

dependent

Infinitely scalable

ot appropriate for

poto realistic

images


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!ommon 2ector File!ommon 2ector File

FormatsFormats 73/

AI

1ost cript

&23

/onts

4R7

&I;


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5'F Format5'F Format

5indows 'etafile

Format.

4esigned for easyexcange between

7indows programs

via clipboard.

&ommon clipart

format.


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$ost(cript Format$ost(cript Format

4eveloped by Adobe

ystems for

typefaces. >xpanded for many

grapic elements.

Encapsulated $ost(cript #.eps% is of

tis format.


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$)F Format$)F Format

Adobe Acrobat

file format.

$ortable

)ocument

Format


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$)F Format$)F Format

Integrates color,

grapics and text

earcableformat


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!G' Format!G' Format

!omputerGrapics

'etafile

3ost common 4(?based format

:sed by ?

9 6arvard 2rapics9 /reelance 2rapics

9 (ters


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!G' Format!G' Format

(lder versions offormat may not load

cleanly into modernversions of software

&an support veryelaborate grapics

A 8sci*oprenic8 fileformatE


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2ector Formats2ector Formats0nd (hapes0nd (hapes


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(oftware !hoices(oftware !hoices

)raditionally,

different software

creates eiterbitmapped or vector

art

)is is cangingE


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(oftware !hoices(oftware !hoices /or bitmapped,

names tat include

te words +1aint or+1oto indicates

tat te primary

function of te

software is to createand manipulate

bitmapped formats


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(oftware !hoices(oftware !hoices /or vector art,

names tat includete words +4raw or+Illustratorindicates tat teprimary function ofte software is to

create andmanipulatebitmapped formats


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(oftware !hoices(oftware !hoices /or vector art,

names tat includete words +4raw or+Illustratorindicates tat teprimary function ofte software is to

create andmanipulatebitmapped formats

>xamples 9

9Adobe Illustrator

9 &orel 4RA79 3icrosoft 4raw

9 3acromedia /reeand

9 erif 4raw1lus

9 3acromedia /las


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3ost modern

versions of

bitmappedsoftware also

include draw tools

1otosop G.now can create

vector art.


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Adobe Acrobat,

desJtop

publising, etc.software is

friendly to bot

categories ofgrapic types


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5hen to Use 5hat5hen to Use 5hat

and 5hen6767and 5hen6767

7at are te re-uirements of

your output deviceM


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Image Nuality /ile i*e


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1oto Image

Illustration


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1oto Image

Illustration

Internet

(ter &omputer

4evices


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!urriculum !ontent and!urriculum !ontent and

0ctivities created by0ctivities created by

)r+ 'ar/ 'ortensen)r+ 'ar/ 'ortensen)ept+ of echnology 8)ept+ of echnology 8

!ognition!ognition

University of North TexasUniversity of North Texas


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Image File Formats-Descriptions

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