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1、photoshopcs5中的基本概念（PS图象处理软件中的基本概念CS5）Firstofall,understandthebasicconceptsinPhotoshopCS51.1basicconceptsinPhotoshopCS5Bitmap:bitmapimagesaretechnicallycalledrasterimages,whichusepixelstorepresentimages.Selectthezoomtool,andclickmultipletimesintheviewtoenlargetheimage.
2、Youcanseethattheimageismadeupofpixels.Eachpixelhasaparticularlocationandcolorvalue.Themoststrikingfeatureofbitmapimagesisthattheyrepresentthefinelayersofcolor.Basedonthisfeature,bitmapimagesarewidelyusedinphotoprocessing,digitalpaintingandotherfields.Vector:vectorgrap
3、hics,alsocalledvectorgraphics,depictimagesbasedontheirgeometriccharacteristics.Thegraphicalelementsinavectorfilearecalledobjects,andeachobjectisaself-containedentity.Usingthezoomtool,theimageiscontinuouslyenlarged,andthevectorgraphicsarestillkeptaspreciseandsmooth.Res
4、olution:simplyspeaking,thatis,theimageofthecomputertothereadertoseetheirownclearandfuzzy.Therelationshipbetweenthesizeoftheimageandtheimagesizeandtheresolutionoftheimage:suchaslargesize,highresolution,largefile,thetotalmemory,computerprocessingspeedwillbeslow,onthecon
5、trary,reductionofanyonefactorthatwillspeeduptheprocessingspeed.Channel:manyreadersareconfusedabouttheconceptofthechannel.Actually,it'sverysimple.Thechannelrepresentstheareaofcolor.Ingeneral,abasiccolorisachannel,suchasRGBcolormode,Risred,representstheredrangeintheimag
6、e,Gisgreen,andBisblue.Layer:usemultiplelayerswhenmakingawork.Thelayerislikeasheetoftransparentcopypaperfoldedtogether.Becauseofthetransparentfeaturesofthecopypaper,theareawithoutimageonthelayerrevealsthecontentsofthenextlayer.1.2colorpatternsofimages(1)RGBcolormode:al
7、soknownasadditivemode,isthebestcolordisplayscreen,bythered,green,bluethreecolors,eachcolorcanhave0-255brightnesschange.(2)CMYKcolormode:RoyalBlue,magenta,yellowandyellowgoods,alsocalledsubtractivemode.Generalprintingandprintingarebothinthismode,sotheprintedpictureisus
8、uallyinCMYKmode.(3)Labcolormode:thismodeisdescribedbyonelightintensityandtwotones,oneiscalleda,andtheotheriscalledB.Itmainly
