Kusankha sikana kuti filimu: mudziwe zothandiza

Kutembenuza zoipa kapena zithunzi kwa mtundu digito ntchito yapadera chipangizo - ndi sikana kuti filimu. Kumasiyana kuchokera sikana ochiritsira kuti lakonzedwa kusamalira yaing'ono zithunzi mandala, omwe ndi mkulu kusamvana. Ngakhale ambiri Zitsulo zofufuzira zidazo flatbed zili ndi zigawo wapadera, amalola kuti aone zithunzi, koma mankhwala analandira chifukwa cha khalidwe osauka.

Only CCD (CCD) chindodo zinthu angapereke zinafunika akuya munda kwa mafano ndi kusamvana mkulu. Choncho, Zitsulo zofufuzira zidazo onse anamanga filimu ndi ntchito zawo. Ena zitsanzo ndi umodzi CCD mzere. Mu nkhani iyi, digitization chofunika mipita atatu mwa negative. Iwo amawapatsa jambulani, koma sikumangotikhudza zotsatira. Kwenikweni, filimu sikana ali CCD osiyanasiyana, ndipo digitizing fano amapezeka chikudutsa limodzi. Ena zitsanzo ntchito reusable chikudutsa kuchepetsa zolakwika mu chifanizo komaliza.

An chizindikiro ofunika amene muyenera kulabadira posankha sikana ndi chigamulocho kuwala. M'lifupi mwa filimu wamba 35 mm, ndi fano iyoyomwe miyeso ngakhale ang'onoang'ono. Choncho, kuchuluka kwa kusamvana kuwala ayenera kukhala osachepera 2400 DPI (madontho pa inchi). Pali Zitsulo zofufuzira zidazo kuti kupereka 4800 ndi 5400 DPI. Ngakhale mlingo panopa luso kukwaniritsa mfundo ngakhale apamwamba, ndi kosathandiza - ngakhale chabwino tirigu kukula kwa filimu adzakhala zambiri pixels.

chidwi ziperekedwe kwa uthunthu zazikulu kapena osalimba kuwala. The apamwamba phindu, ndi bwino sikana akhoza kupatsira halftone zoipa ndi mtundu kusintha yosalala. Pakuti Mkhalidwe mtengo wa kachulukidwe kuwala kwa processing filimu ayenera kukhala mu uthunthu wa ku 3,2 D 3,6 D. tatenga chitsanzo ndi wamkulu kachulukidwe kuwala sizimatanthauza, monga ambiri mafilimu amenewa n'lopindulitsa.

Khalidwe la digitization amakhudza komanso pokha chifaniziro cha dziko, omwe amadziwika ndi mtundu kubalana. Modern sikana filimu akhoza kukhala 42 kapena 48 pang'ono mtundu chifaniziro, koma processing mtundu ntchito kokha mkati sikana, ndipo akutumikira kuchepetsa "phokoso" kusintha. Chithunzi chifukwa ali ndi muyezo 24-bit mtundu kabisidwe zida kompyuta.

Sikana kwa zithunzi nthawi zambiri chikugwirizana ndi kompyuta kudzera USB-mawonekedwe. More zitsanzo mtengo akhoza chokhudzana kudzera SCSI-2 ndi IEEE 1394 (FireWire). Pankhaniyi, zambiri zokwanira m'gulu ndi khadi ndi Mtsogoleri deta.

Sikana filimu pafupifupi nthawi zonse ali pa hardware wachithunzi kuwongola. Izi Intaneti Ice, amene amalola kuchotsa chithunzi fumbi zimakhalapo, popanda okhudza chifaniziro chachikulu, ndipo Intaneti ngale, amene amalola kuthetsa graininess ndi Intaneti ROC, kulola kubwezeretsa mtundu zithunzi chinazilala mtundu ndi ena. Nthawi zambiri, njira imeneyi amaphatikiza phukusi wina Intaneti ICE4 mwaukadauloZida. Kugwiritsa matekinoloje kwambiri prolongs ndi jambulani, koma zotsatira zake zimakhala zabwino. Pakuti kusinthika kotereku Photoshop Pakufunika nthawi zambiri, ndi chifukwa si kungakupatseni.