Waa maxay "raster": Qeexidda, kala soocidda, tarjumaadda galay dulinka ah

naqshadeeye kasta ogyahay waxa hannaankii. Waxaa muhiim ah si ay u diyaariyaan images ee badalaada, Layouts abuurka ay. Waayo, farqiga u network user celceliska dhexeeya qaabab ma aha sidaas u weyn. Si kastaba ha ahaatee, tani waa waxyaabaha aasaasiga ah ee la sawir ah in qof kasta waa in ay ogaadaan, oo raba in ay awoodaan in ay ka arrinsashada photos shaqeeya.

raster Qeexid, faa'iidada iyo khasaaraha ay

Waa maxay bitmap ah? image Tani waxay ka kooban yahay shax ah pixels, rinji midabka gaar ah. Waxay si fudud u aragto, tiradaasi aad u balaaran. File la naqshadeynta raster xajiya code ka kooban tirada dhibcaha iyo midabka. Photos, images la marsiiyey, sawirada in majaladaha iyo shaashadda kombiyuutarka - raster. Roobka ee pixels (dhibco) gudbin karaan image ah wax kakanaanta, hooskii, gradients, isku dari kara, halftone, 3D-saamaynta iyo xataa animation. Photorealism - Faa'iidada ugu weyn ee this nooca muuqaallo kale.

The darrada raster waxaa ka mid ah kuwan soo socda:

1. Awoodid la'aan in la qaaddo. image ballaadhi (ie iskala Roobka ee pixels) ama u hoos (styanuv si qaar ka mid ah qodobada lagu lumin doonaa), si weyn u xaqiro karo tayada image.
2. bitmap waxaa ku koobnayn leydi. Taasi waa, ku dul codsiga of barbaro on kasta oo kale oo ah "Qarinaysaan" hoose hoos ugu sareysa jeeda cad.
3. The image ka sii adag, ayaa in ka badan waxa uu culeyskiisu yahay file a.

Features raster

images Raster ku kala duwan yihiin baaxadda, xallinta, modules midabka iyo tirada midabada. sifooyinka sidoo kale aad u fiican oo ah xirneeyn. noocyada loo yaqaan of raster nooca furta: joogto ah iyo stochastic.

1. Size (by miisaanka) - tirada guud ee pixels in image loo xisaabiyo in CB (MB, GB). Sawirka weyn iyo in ka badan oo adag, ayaa in ka badan waxa uu culeyskiisu yahay.
2. Resolution - tirada pixels per inch (PPI) ee online images, sawiro, ama dhibco per inch (dpi) ee sawirada ku daabacan. The ka weyn qiimaha, si fiican ugu sawirka, cad. images xalinta Standard Internet - 72 PPI, Layouts print - 300 PPI.
3. module Color qeexayaa hooska aasaasiga ah. Tani waxay noqon kartaa RGB, caadi ah marka cas, cagaar iyo buluug joogaan in qadar siiyey in pixel kasta oo la isku daro si ay u sameeyaan midab la doonayo. Si aad u diyaariso Layouts inta badan isticmaalaan CMYK - module ka kooban cyan, magenta, huruud iyo madow. Shaybaarka - waa "dhalaalaya", ee casaan-cagaaran iyo buluug-cawlan, Cabbircawl - hooska cawlan.
4. Sidee gelinno badan ayaa encoded in pixel kasta waxay ku xiran tahay midabka ah ee sawirka. In images monochrome dhibic kasta oo culeyskiisu yahay 1 yara. Haddii pixel 4 hannaankii xoogaa ka kooban yahay 16 midabada. 8 BPP siin 256 midabada, 16 gelinno - 65K midabada 24 gelinno -. 16 milyan oo midabo ..
5. The noocyada soo socda ee rasters, taas oo ku xidhan pixel isugu qaab mesh joogto ah (oo leh dhibco ka fujiyaan ama Roobka) stokahtichesky urur sax ah ma, i.e. pixels waxaa lagu kala sooc lahayn diyaarin.

bitmap duwan dulinka

Waxa intaa dheer in qaab raster waa dulinka ah - si ay u abuuraan nidaam ah oo pixels ah - qaababka joomateri ee fudud: laydiga, magacda, wareegyada, khadadka si toos ah iyo gooladaha. naqshadeynta dulinka file ku jira caanaha xisaabeed - beegyada uu tirooyinka (dhexroor, dhererka, width, buuxi midabka, dusha), goobta ay ku shiraac ah (X iyo Y-duwo) iyo qaraabo meel kasta oo kale oo. Dulinka barbaro zoom ah iyo edit - kaliya beddelo dabeecadaha shayga la doonayo. Marka aad la kordhiyo ama hoos u tayo image ay innaba ma beddelmin. dulinka Sawirka aan ku xaddidnayn jeeda qaab - waxay la galin karaa kasta oo kale. Xaaladdan oo kale, file asalka ah oo miisaan aad u yar tahay raster ah.

Iyada oo aad u badan faa'iidooyinka in this screen ka leexin kara dulinka ah? Images qaab this si dhib la odhan karaa waa macquul - waxay leeyihiin qaab cartoon-sida in yar oo ay sabab u tahay xaqiiqada ah in ay isticmaalaan midabo adag iyo gradients. Modern naqshadeynta tafatirayaasha - Corel isku aadka, sida Adobe muujiye - la saamaynta adag oo Hoos la moodo, qasayso midabka, ee mugdiga galinaya shaqayn karin, laakiin awoodaha processing raster image waa weli fog. dulinka waa Layouts diyaar daabacaadda.

qaabab Raster

images Raster la badbaadin karaa qaabab kala duwan, iyo diinta ka qaadataa meel waa mid fudud - waxaad u baahan tahay in la furo file la editor kasta image, dooro furidda shayga "Save sida" iyo dheeraad ku haboon.

GIF - format ugu fudud. Waxa ay taageertaa hufnaan iyo animation saamaynta, culeyskiisu yar, laakiin midabka waa ka yar yahay - 256 midabada. GIF waa habboon in la garaafyada dukaanka, gooldhalinta.

PNG isticmaalaa riixo sameecadda ah oo taageera hufnaanta, midabka sii badan intii GIF.

TIFF loo isticmaalo kala iibsiga ka raster in dulinka, sida format this ma ku milmaan layers ee sawir.

Jpeg - format ugu caansan ee loo isticmaalo images weli, images la marsiiyey, images web.

Sidee si loogu badalo ka raster in format dulinka

Ma u baahan tahay si loogu badalo image bitmap ah oo wuxuu galay dulinka ah u muuqataa in naqshadeeye khariidad ee soo saaridda, ama haddii aad rabto in aad u ballaadhiyo image ah, wax laga beddelo iyada oo aan laga badiyay tayada. Tarjumidda galay dulinka - ma hawl Ciyaalle, saamaynta badan sawir aan la ciyaari karin. Iyada oo Raadinta si toos ah tayada sawirka waxa aad u yaraynaya, midabka la khaldan, badiyay faahfaahinta sawirka. Tani waxay si toos ah u abuuraa alaab ka kooxo pixels mid ah midabo la mid ah, ee ku taalla dusha ee bitmap ah. Haddii sawirka waa mid adag, waxyaabaha abuuray waxay noqon kartaa mid aad u badan, iyo iyaga edit walwalsan. Autorouting waxaa laga heli karaa in tifaftirayaasha Corel Drew ama muujiye.

tayada image wanaagsan waxaa laga heli karaa oo keliya iyadoo Raadinta buuggan. In naqshadeeye sawir this encircles ee dusha iyo hooska ama mugga abuuray by superposing xabbadood oo size kala duwan iyo midabka si ay u midba midka kale. Habka ugu fudud ee loo sameeyo looxa a graphic, stylus khadka baafinta. Joogu ahbaa dulinka image waa qaali oo aadka u qiimeeyeen.

... iyo qeybsanaan ku xigeenka

Rasterization - geeddi-socodka ah baafinta soo horjeeda, marka sawirka dulinka ah in la turjumo in raster ah, tusaale ahaan, si ay u kabaan leh filtarrada sawir sare. Xaaladdan oo kale, dhammaan sifooyinka wanaagsan ee dulinka ah baaba'aan, in uu yahay, waxa ay noqon doontaa wax aan macquul aheyn in ay qaaddo image ka dhalanaya oo aan laga badiyay tayada. Sidaa darteed, waa la jecel yahay in ay sii file asalka ah si ay u ballaadhiyo ama la beddelo image ah haddii loo baahdo.

Ka hor inta suuqa kala iibsiga si ay shaashadda (Beddelaan inay Bitmaps) waa in aad dhigay xuduudaha soo socda:

1. Color - tirada midabada sawirka.
2. Dithered - haddii aad dhaqaajiso midabka wax this la abuuri doonaa ku khalda.
3. Redolution - xallinta.
4. Anti-aliasing - line ama jab khariidad hore la smoothed doonaa.
5. Trandparent Backgrounf - dhimaya ka dhigaysa asalka hufan.
6. Size - size.

Sidaas daraaddeed, shaqo sax ah la sawiro aad u baahan tahay in la ogaado waxa raster iyo dulinka. Raster image aasaasay of hannaanka ah pixels - yar xubno graphic. Raster midabo, celin saamaynta photo badan, xataa animation. Si kastaba ha ahaatee, sawiradaan adag tahay in la qaaddo iyo isbedelka. Dulinka, on lid ku ah, waa ay fududahay si ay u badalaan by beddelo wax sawir kasta; halka qaadeysaa tayada isku mid. Si kastaba ha ahaatee, hoosku, isku dari kara, gradients adag iyo midabo qasayso si uu u gudbiyo adag. sawir Raster noqon kartaa oo ku saabsan bandhigay qaab dulinka, iyo qeybsanaan ku xigeenka.