photoshop cs中的基本概念PS图象处理软件中的基本概念CS.docx

photoshop cs中的基本概念PS图象处理软件中的基本概念CS.docx

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photoshopcs中的基本概念PS图象处理软件中的基本概念CS

photoshopcs5中的基本概念（PS图象处理软件中的基本概念CS5）

Firstofall,understandthebasicconceptsinPhotoshopCS5

1.1basicconceptsinPhotoshopCS5

Bitmap:

bitmapimagesaretechnicallycalledrasterimages,whichusepixelstorepresentimages.Selectthezoomtool,andclickmultipletimesintheviewtoenlargetheimage.Youcanseethattheimageismadeupofpixels.Eachpixelhasaparticularlocationandcolorvalue.Themoststrikingfeatureofbitmapimagesisthattheyrepresentthefinelayersofcolor.Basedonthisfeature,bitmapimagesarewidelyusedinphotoprocessing,digitalpaintingandotherfields.

Vector:

vectorgraphics,alsocalledvectorgraphics,depictimagesbasedontheirgeometriccharacteristics.Thegraphicalelementsinavectorfilearecalledobjects,andeachobjectisaself-containedentity.Usingthezoomtool,theimageiscontinuouslyenlarged,andthevectorgraphicsarestillkeptaspreciseandsmooth.

Resolution:

simplyspeaking,thatis,theimageofthecomputertothereadertoseetheirownclearandfuzzy.Therelationshipbetweenthesizeoftheimageandtheimagesizeandtheresolutionoftheimage:

suchaslargesize,highresolution,largefile,thetotalmemory,computerprocessingspeedwillbeslow,onthecontrary,reductionofanyonefactorthatwillspeeduptheprocessingspeed.

Channel:

manyreadersareconfusedabouttheconceptofthechannel.Actually,it'sverysimple.Thechannelrepresentstheareaofcolor.Ingeneral,abasiccolorisachannel,suchasRGBcolormode,Risred,representstheredrangeintheimage,Gisgreen,andBisblue.

Layer:

usemultiplelayerswhenmakingawork.Thelayerislikeasheetoftransparentcopypaperfoldedtogether.Becauseofthetransparentfeaturesofthecopypaper,theareawithoutimageonthelayerrevealsthecontentsofthenextlayer.

1.2colorpatternsofimages

（1）RGBcolormode:

alsoknownasadditivemode,isthebestcolordisplayscreen,bythered,green,bluethreecolors,eachcolorcanhave0-255brightnesschange.

（2）CMYKcolormode:

RoyalBlue,magenta,yellowandyellowgoods,alsocalledsubtractivemode.Generalprintingandprintingarebothinthismode,sotheprintedpictureisusuallyinCMYKmode.

（3）Labcolormode:

thismodeisdescribedbyonelightintensityandtwotones,oneiscalleda,andtheotheriscalledB.Itmainlyaffectsthetoneoflightandshade.

（4）indexcolor:

underthiscolor,theimagepixelisexpressedbyonebyte.Itcontains256colorcolortableatmost,andstoresandindexesthecolorused.Itisnotofhighqualityandoccupieslessspace.

（5）grayscalemode:

thatis,onlyblackandwhiteimagesaredisplayed,thepixel0isblack,andthepixel255iswhite.

（6）bitmapmode:

pixelsarenotexpressedbybytes,butbybinaryrepresentation,thatis,blackandwhitearerepresentedbybinary,thusaccountingforminimaldiskspace.

Secondly,youshouldknowthecommonlyusedeffectmakingmethodsinPhotoshopCS5

1.makegrayscaleimages

Toconvertacolorimageintoagrayscaleimage,theusualmethodistoexecutetheimage"model","grayscale"command,or"image","adjust","color",and"color".Youcanalsomakethegrayimagebyusingthechannelspalette.TheimageistransformedintoLabcolormode:

"image"and"model","colorLab"command,andthenswitchtothe"channel"palette,deletechannel"a"and"B"channel,youcangetagrayimagemoredelicate.

2.makedummylines

Selectthebrushtool,andthenclickthetogglebrushpanelbuttoninitsoptionsbar.Thisisthetimetoopenthe"brush"panel,inwhichthesetof"distance"value,leavingagap,andthenusethebrushtodrawthedottedlinetheyneedintheview,tocompletethelinedrawing.

3.maketwoequalsizedfiguresthatoverlapwithsemitransparenteffects

Choosetoadjustthelayerinthelayerpalette,thentherewillbenotransparencyoptionandset"layerblendingmodesetupoptions,

Youcanadjustthetransparencyoftheupperlayeraccordingtoyourownneeds.

4.makeedgesfadeout

Theeffectofthechoicefortheproductionofthelayer,andthenclickthelayerpalettetoaddlayermaskbuttontoaddalayermask.Thenselectthegradienttool,settheforegroundcolortoblack,thebackgroundcoloriswhite,finallypullinthemaskeffectcameout.

5.,inPhotoshopCS5drawthree-dimensionalsphericaleffect

Drawacircletoeditaselection,colorgradientcolor,thefirstcolorforhighlightcolor,secondcolorbacklightcolor,thecolorforthereflectivecolor（i.e.aslightlylightercolorthanthebacklightcolor）,andthenusethegradienttooloutgraduallychangedfromsphericalfloatinghighlightinthecirculartothebacklightpart.Cancelthefloatingstateoftheconstituency.

6.,storethebuckleoutofthemap,notthebackofthebackground

Whentheimageisselected,keepthefloatingstateoftheselectedarea,executetheEdit>copycommand,andthenexecutetheEdit>Pastecommand,thendeletethelowerlayerandstoreitfinally.NotethatthestorageformatshouldbeinSDformat,orinPSformat,orinIformat.

7.makeseamlesstextureeffects

Seamlessmapsareimportantbothfor3Dimagesandforwebpages,whichwecaneasilyaccomplishinPhotoshop.Customizeyourimageaftertheimplementationofthe"filter"and"other","displacement"command,displacementinhorizontalandverticaldirection,generallysetdisplacementishalfthesizeofanimage,themostimportantistheundefinedregionsettoturnback.Aftercompletionofthedisplacement,applytherubberstamptoolatthestitchingoftheimage,removetheseam,andthendefinetheimageasapattern.Withthispattern,seamlessbackgroundimagescanbeobtained.

8.createcustombrushesinPhotoshopCS5

InPhotoshop,thereisaresourcethatisusefulbutnottakenadvantageofbymostpeople,andthatis,creatingcustombrushes.PerformtheEdit>definebrushcommandtodefinethedrawnimageasanewbrush.Ifthereisnochoice,Photoshopwilldefinealltheimagesonthecanvasasbrushes.Inthisway,youcancreateallkindsofuniqueimageswiththesecustombrushes.

9.savelensflareeffects

Inprimaryimageprocessing,lensflareisoneofthemostfrequentlyusedmodifications.Ingeneral,youcanusethe"filter","render","lenshalo"commandintheimagetoincreasetheatmospherefortheimage.

（1）ifyou'reveryhappywiththehaloeffectofaparticularlens,andwanttosaveit,wecanmakeuseofthelayerblendingfeature.Createanewlayerontheimageinadvance,

（2）fillthelayerwithblack,thenapplythelenshalofilter,andthensetthelayer'sblendingmodeto"screen"sothattheblackishiddenandyougetaseparatehaloeffectlayer.However,theonlydrawbackofthismethodisthatitcannotbedisplayedonwhiteimages.

10.inPS,letapicturespreadoverthewholepicture

Firstdefineapictureasapattern,thenfillitupagain.Openanimage,executeedit,definedesign,openthedefinitiondesigndialogbox,keepthedialogbox'sdefaultsettings,andclicktheOKbuttontoclosethedialogbox.Thenchoosetheneedtofilltheimageofadocument,theimplementationofthe"Edit","fill"command,fill"pattern"andselectthedefinitionpatternsetintheopendialogbox,clickOKafterthebuttontoclosethedialog.

ThenbefamiliarwiththeuseofthePhotoshopCS5shortcutkey

IntheuseofPhotoshopCS5,skilledintheuseofshortcutkeyshasmanyadvantages:

1.toimprovetheworkingefficiency;2.fullscreenmode,sothatabroadervision;3.canbetterconcentrateonwork.Sohowdoyouunderstandtheshortcutkeysforeachcommand?

Let'sgettothebottomofit:

First,inthetoolbox,movethemouseoverthetoolbuttonforamoment,

Youcandisplaythenameandshortcutkeyofthetool,orclickthetoolwiththetrianglebuttontoseeitinthepop-upshortcutmenu.

Clickthemenu,andtheshortcutkeysappearontherightsideofsomecommands,asshowninthefollowingfigure.Inaddition,inordertofacilitatebeginnerstolearn,theauthorcarefullysummeduptheshortcutkeyDaquan,forbeginnersreference

First,thetoolbox（multipletoolstoshareashortcutkey,butalsopress[Shift]plusthisshortcutkeytoselect）

Rectangularandellipticalmarqueetool[M]

Mobiletools[V]

Lasso,PolygonalLasso,magneticlasso[L]

Magicwandtool[W]

Cuttingtools[C]

Slicingtool,sliceselectiontool[K]

Airbrushtool[J]

Brushtools,penciltools[B]

Likealeatherstamp,apatternstamp[S]

HistoryBrushtool,arthistorybrush[Y]

Likeleathereraser,backgrounderaser,magiclikeleathereraser[E]

Gradienttools,paintbuckettools[G]

Blur,sharpen,smudgetools[R]

Weakeninganddeepeningspongetools[O]

Pathselectiontool,directselectiontool[A]

Texttool[T]

Pens,freepens[P]

Rectangles,circles,rectangles,ellipses,polygons,straightlines[U]

Straw,colorsampler,measuringtool[I]

Grippertool[H]

Zoomtool[Z]

Defaultforegroundcolorandbackgroundcolor[D]

Switchtheforegroundcolorandbackgroundcolor[X]

Temporaryuseofmobiletools[Ctrl]

Temporaryuseofsuctiontools[Alt]

Standardswitchmodeandquickmaskmode[Q]

Temporaryuseofgrippertools[spaces]

Standardscreenmode,fullscreenmodewithfullmenubar,fullscreenmode[F]

JumptoImageReady3.0[Ctrl]+[Shift]+[M]

Quickinputtooloptions（atleastoneadjustablenumberinthecurrentToolspalette）[0]to[9]

Two,fileoperation

Newgraphicsfile[Ctrl]+[N]

Opentheexistingimage[Ctrl][O]

Openfor[Ctrl]+[Alt]+[O]

Closethecurrentimage[Ctrl]+[W]

Savethecurrentimage[Ctrl][S]

Saveas[Ctrl]+[Shift]+[S]

Storageforwebgraphics[Ctrl]+[Alt]+[Shift]+[S]

Prin