Ngoku, abantu abaninzi bafuna ukwazi ukuba loluphi umphumo olungcono phakathi kweskena kunyeikhamera yoxwebhuNgaphambi kokuba siphendule lo mbuzo, masithethe ngemisebenzi ephambili yale mibini. I-Scanner sisixhobo esidityanisiweyo se-optoelectronic esavela ngeminyaka yoo-1980, kwaye umsebenzi waso ophambili kukwenza amaxwebhu ephepha abe yi-electron. Ekuqaleni kokuzalwa kwekhamera yoxwebhu, umsebenzi ophambili kukwenza amaxwebhu ephepha abe yi-electron. Umahluko kuphela phakathi kwe-scanners ngumgaqo osebenzayo. Ezi zixhobo zimbini zijongana neemfuno ezifanayo, ngoko ke abathengi abaninzi bafuna ukuthelekisa nokubona ukuba sesiphi isixhobo esinesiphumo esingcono. Umahluko omkhulu phakathi kwekhamera ephezulu kunye neentlobo ezahlukeneyo ze-scanners awungomphumo kangako, njengoko imeko yesicelo yahlukile.
Iimpawu eziphambili zeikhamera yoxwebhuzezi: amaxwebhu askeniweyo awadingi phepha, akukho nkunkuma yephepha, afanelekile kwiofisi engenamaphepha. Isantya sokuskena sesixhobo esinokubetha okuphezulu sikhawuleza, ngelixa iskena sendabuko sinzima ngakumbi xa uskena uxwebhu, kufuneka uphakamise isiciko ukuze ujike iphepha, kwaye isixhobo esinokubetha okuphezulu singaskena ngqo iphepha. Iskena sendabuko sinzima ngakumbi xa uskena amaxwebhu. Iskena esisicaba singumthombo wokukhanya ovaliweyo, asichaphazeleki kukukhanya okunamandla, iskena umfanekiso awuyi kutshintsha, ngokusisiseko sinokufikelela kubungakanani be-1:1, ukubuyiselwa kombala ophezulu, umfanekiso ocacileyo. Ifanelekile ukuskena imizobo yombala, imifanekiso, iifoto.
Umsebenzi ophambili wesikena kukuskena, kodwa ukuze nje iskena sithelekiswe, iskena singcono kunesixhobo esinomfanekiso ophezulu, isisombululo se-scanner sinokufikelela kwi-600dpi kwaye isisombululo siphezulu kakhulu, sifanelekile kwizicelo zokuskena ezichanekileyo. Isetyenziselwa ukwenza idatha enzima ibe yedijithali kunye nokuqondwa kombhalo we-OCR,ikhamera yoxwebhuisebenza kakuhle kakhulu kuneskena, kodwa ukuba ufuna nje isiphumo sokuskena esichanekileyo, iskena singcono.
Ixesha lokuthumela: Februwari-20-2023