halftone

halftone
pustoninis spausdinimas statusas T sritis informatika apibrėžtis Įvairaus ↑pilkumo tonų išgavimas naudojant tik juodus ir baltus taškus. Beveik visuose spausdintuvuose vaizdas sudaromas vien iš juodų ir baltų taškų. Įvairūs pilkumo tonai gaunami tolygiai išretinant juodus taškus baltame fone arba keičiant tolygiai išdėstytų taškų dydį. Esant ganėtinai didelei ↑skiriamajai gebai atskiri taškai nepastebimi ir gaunamas tam tikro pilkumo įspūdis. Tačiau didėjant pustonių skaičiui, mažėja reali spausdintuvo skiriamoji geba, nes maži taškai susijungia į didelius. Pavyzdžiui, jeigu reikia gauti 64 pustonius, tai vienam pilkam taškui nupiešti reikės 8×8 juodų taškų. Jeigu spausdintuvo skiriamoji geba yra 600 taškų colyje, tai jis galės „nupiešti“ 600/8 = 75 pilkus taškus colyje. atitikmenys: angl. halftone; halftoning ryšiai: dar žiūrėkpilkumo tonas dar žiūrėkskiriamoji geba

Enciklopedinis kompiuterijos žodynas . . 2008.

Игры ⚽ Поможем написать реферат

Look at other dictionaries:

  • Halftone —   [dt. Halbton], Halbtonbild …   Universal-Lexikon

  • halftone — [haf′tōn΄] n. 1. Art a tone or shading between light and dark 2. Music SEMITONE 3. Photoengraving a) a technique of representing shadings by dots produced by photographing the object from behind a fine screen b) a photoengraving so made …   English World dictionary

  • Halftone — For the music interval, see semitone. Left: Halftone dots. Right: How the human eye would see this sort of arrangement from a sufficient distance. Halftone is the reprographic technique that simulates continuous tone imagery through the use of… …   Wikipedia

  • halftone — /haf tohn , hahf /, n. 1. Also called middle tone. (in painting, drawing, graphics, photography, etc.) a value intermediate between light and dark. 2. Print. a. a process in which gradation of tone in an image is conveyed by first photographing… …   Universalium

  • halftone — UK [ˌhɑːfˈtəʊn] / US [ˈhæfˌtoʊn] noun Word forms halftone : singular halftone plural halftones a) [uncountable] a way of printing black and white photographs that uses spots of different sizes b) [countable] a photograph printed using the… …   English dictionary

  • halftone — noun Date: 1651 1. half step 2 2. a. any of the shades of gray between the darkest and the lightest parts of a photographic image b. (1) a photoengraving made from an image photographed through a screen and then etched so that the details of the… …   New Collegiate Dictionary

  • halftone — half|tone [ hæf,toun ] noun uncount a way of printing black and white photographs that uses spots of different sizes a. count a photograph printed using the halftone method …   Usage of the words and phrases in modern English

  • halftone — /ˈhaftoʊn/ (say hahftohn) noun 1. Painting, Photography, etc. a value intermediate between high light and deep shade. 2. Photoengraving a. a process in which gradation of tone is obtained by a system of minute dots produced by a screen placed in… …  

  • halftone — noun 1. a print obtained from photoengraving • Hypernyms: ↑engraving 2. an engraving used to reproduce an illustration • Syn: ↑halftone engraving, ↑photoengraving • Hypernyms: ↑engraving …   Useful english dictionary

  • Halftone characteristic — In telecommunication, the term halftone characteristic has the following meanings: # In facsimile systems, the relationship between the density of the recorded copy and the density of the object, i.e. , the original. # In facsimile systems, the… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”