Izidingo zobuchwepheshe zokukhanyisa kwekhamera ekubonweni komthambo wesundu

Umthombo wokukhanya oseduze kwe-infrared: Ukubonwa kwemithambo yesundu ikakhulukazi kuncike ekukhanyeni okuseduze kwe-infrared ngoba i-hemoglobin ene-oxygenated emithanjeni inokumunca okunamandla kokukhanya okuseduze kwe-infrared. Ngaphansi kokukhanya kokukhanya okuseduze kwe-infrared, indawo ye-vein ibonakala imnyama, yenza umehluko ocacile nezicubu ezizungezile, ngaleyo ndlela ibonise ngokucacile iphethini yomthambo wesundu. Imithombo yokukhanya evamile eseduze ne-infrared ihlanganisa ama-light-emitting diode aseduze ne-infrared (ama-LED anezinzuzo zokusebenzisa amandla aphansi, impilo ende, nesivinini sokuphendula ngokushesha, futhi anganikeza ngokuzinzile umthombo wokukhanya odingekayo ukuze kutholwe isithombe se-palm vein. Ngokuba, kumadivayisi okulawula ukufinyelela okubonwa komthambo wesundu, eduze kwe-infrared, imithombo yokukhanya ye-LED eseduze isetshenziswa kabanzi ukuze kuqinisekiswe ukuthi imithombo yokukhanya ye-LED ehlukahlukene isetshenziswa kabanzi ukuze kuqinisekiswe ukuthi izindawo zokukhanya ze-LED zisetshenziswa kabanzi.

Izici ezingabonakali: Ukuze kuvikelwe ubumfihlo bomsebenzisi futhi kuthuthukiswe ukuvikeleka, umthombo wokukhanya wokubonwa komthambo wesundu kufanele ube nezici zokukhanya ezingabonakali. Ukukhanya okune-infrared eduze kusebangeni le-spectrum elingabonakali ngeso lomuntu, ligwema ukuphazamiseka kokubona komsebenzisi futhi linciphisa nengozi yokuthi izici zomthambo wesundu zibonwe futhi zebiwe ngeso lenyama. Kuhlelo lokuqinisekisa ubuwena bezikhungo zezezimali, umthombo wokukhanya oseduze ne-infrared awukwazi kuphela ukuqinisekisa ukunemba kokuqinisekiswa kobunikazi bomsebenzisi kodwa futhi uvikele ngempumelelo ukuphepha kolwazi lomsebenzisi.

Amandla azinzile futhi amaphakathi: Amandla okukhanya adinga ukuzinza futhi amaphakathi. Ukukhanya okunamandla kakhulu kungase kuholele ekuchayekeni ngokweqile kwesithombe, kubangele ukulahleka kwemininingwane kuphethini yomthambo wesundu; kuyilapho ukukhanya okubuthakathaka kuzokwandisa umsindo wesithombe futhi kunciphise ukucaca, okuthinta ukukhishwa nokuqashelwa kwezici zesundu. Ngokuvamile, ubukhulu bokukhanya bamadivayisi okubona umthambo wesundu kufanele kulawulwe phakathi kwebanga elithile ukuze kuqinisekiswe ukuthi izithombe ezitholiwe zomthambo wesundu zinokugqama okufanayo futhi zicacile. Isibonelo, kumadivayisi okufika emithanjeni yesundu ezindaweni zamahhovisi asendlini, ukukhanya kudinga ukulungiswa ngokunengqondo ngokuya ngokukhanya kwemvelo kwangaphakathi kanye nendawo yokubeka idivayisi ukuze kuqinisekiswe ukuthi izithombe zemithambo yesundu zabasebenzi zingatholwa ngokunembile ngezikhathi ezihlukene.

Umsebenzi wokulungisa okuzenzakalelayo: Ukuze uvumelane nezimo zokusetshenziswa ezihlukene kanye nomehluko kubasebenzisi, ukukhanya kwekhamera kufanele kube nomsebenzi wokulungisa ngokuzenzakalelayo ukukhanya. Ngenzwa yokukhanya eyakhelwe ngaphakathi, ukukhanya kwe-ambient kutholwa ngesikhathi sangempela, futhi ukuphuma komthombo wokukhanya kulungiswa ngokuzenzakalela ukuze kuqinisekiswe ukuthi izithombe zekhwalithi ephezulu zemithambo yesundu zingatholwa noma ngabe kukukhanya kwelanga okuqinile ngaphandle noma ekukhanyeni okufiphele ngaphakathi endlini. Kumishini yokubona imithambo yesundu yangaphandle, umsebenzi wokulungisa ngokuzenzakalelayo amandla okukhanya ungenza idivayisi isebenze ngokujwayelekile emini nasebusuku, ngaphandle kokuthintwa izinguquko ekukhanyeni.

Ukukhanya okufanayo kwendawo yesundu: Ukukhanya kwekhamera kudinga ukukhanyisa ngokulinganayo yonke indawo yesundu ukuze kugwenywe ukukhanya okwedlulele kwasendaweni noma ubumnyama obudlulele, iqinisekise ukuthi ukugqama nokucaca kwengxenye ngayinye yesithombe somthambo wesundu kuyahambisana. Ngokusebenzisa idizayini ekhethekile yokubona kanye nezinto zokubonisa ezisabalalisa, ukukhanya okuseduze kwe-infrared kungasatshalaliswa ngokulinganayo endaweni yesundu. Isibonelo, kwamanye amathuluzi okubona umthambo wesundu asezingeni eliphezulu, umthombo wokukhanya okumise okwendandatho kanye nepuleti lokubonisa elihlakazekile kusetshenziswa ukuhlanganiswa ukuze kuzuzwe ukufana kwayo yonke intende yesundu, okunikeza isiqinisekiso sokukhipha ngokunembile izici zomthambo wesundu.

Ukugwema ukukhiqizwa kwethunzi: Ukukhanyisa okufanayo kungagwema ngokuphumelelayo izithunzi endaweni yesundu, njengoba izithunzi zingaphazamisa ukuqashelwa kwamaphethini emithanjeni yesundu, okuholela ekukhishweni kwesici. Lapho uklama isistimu yokukhanyisa yamadivayisi okubona umthambo wesundu, kuyadingeka ukucabangela ngokugcwele i-engeli nokusatshalaliswa komthombo wokukhanya ukuze kuqinisekiswe ukuthi ukukhanya kukhanyisa intende kusuka eziqondisweni eziningi, kususe umthelela wethunzi. Ngomongo wokugadwa kwezokuphepha, ukugwema ukukhiqizwa kwethunzi kungathuthukisa ukunemba kokuqashelwa komthambo wesundu kanye nokuvela kwezinto ezingamanga.

Ukukhanyisa okusheshayo nokucisha: Uma umsebenzisi enza ukuqashelwa komthambo wesundu, isibani sekhamera sidinga ukuthi sikwazi ukuvula ngokushesha, sifinyelele esimweni sokukhanya esizinzile ngesikhathi esifushane (imvamisa phakathi kwamasekhondi angu-0.1), ukuze sithwebule isikhathi sesithombe somthambo wesundu futhi sithuthukise ukusebenza kahle kokuqashelwa. Ngemva kokuqedwa kokuqashelwa, ukukhanya kufanele kukwazi ukucisha ngokushesha ukuze konge amandla nokunciphisa ukuphazamiseka kumsebenzisi. Emshinini wokuqashelwa kwesundu wesiteshi sokuhlola ukuvikeleka esisheshayo sesikhumulo sezindiza, ilambu lokusabela elisheshayo lingaqinisekisa ukuthi abagibeli bayadlula ngokushesha eshekeni lokuphepha futhi banciphise isikhathi sokulinda.

Ukuthwebula kwekhamera kokuvumelanisa: Isivinini sokuphendula sokukhanya kufanele sivunyelaniswe nesivinini sokuthwebula isithombe sekhamera ukuze kuqinisekiswe ukuthi ukukhanya kusesimweni esihle kakhulu uma ikhamera ithwebula isithombe, ithola isithombe esicacile somthambo wesundu. Ngokuklama okunembe kwesekethe kanye nama-algorithms okulawula, ukusebenza okuvumelanayo kokukhanya nekhamera kufinyelelwa, kugwenywe ukufiphalisa ukukhanya okungalingani okubangelwa ukuvumelanisa. Kuhlelo lokuhambela okuhlakaniphile, ukuvumelanisa ukukhanya nekhamera kungaqinisekisa ukuthi abasebenzi baqeda ukuqashelwa komthambo wesundu ngokushesha nangokunembile lapho bengena.

Impilo ende: Imishini yokubona imithambo yesundu ingase isebenze ngokuqhubekayo isikhathi eside, ngakho-ke impilo yesibani sekhamera ibalulekile., impilo yomthombo wokukhanya oseduze ne-infrared iyadingeka ukuze ifinyelele amashumi ezinkulungwane zamahora noma ngaphezulu, kunciphisa imvamisa yokushintsha umthombo wokukhanya kanye nokugcinwa kwempahla yezindleko. Ezindaweni ezinezidingo eziphakeme zokuzinza kwemishini, njengamabhange, imithombo yokukhanya yesikhathi eside ingaqinisekisa ukusebenza okuzinzile kwesikhathi eside kohlelo lokuqaphela umthambo wesundu ukuqinisekisa ukusebenza okuvamile kwebhizinisi.

Ukuzinza okuphezulu: Ukukhanya kufanele kugcine ukusebenza okuzinzile ngesikhathi sokusetshenziswa kwesikhathi eside, okuhlanganisa ukukhanya, izici ze-spectral, njll., ukuze kugwenywe ukuwohloka ngenxa yokuguga komthombo wokukhanya noma ezinye izici, ezithinta ukunemba kokubonwa kwemithambo yesundu. Ngokusebenzisa imithombo yokukhanya yekhwalithi ephezulu kanye namasekethe okushayela azinzile, kuyaqinisekiswa ukuthi ukukhanya kungasebenza ngokuzinza ngaphansi kwezimo ezihlukene zemvelo. Emishinini yokuqaphela imithambo yesundu ezindaweni zezimboni, izibani ezizinzile zingakwazi ukuzivumelanisa nezimo zokusebenza eziyinkimbinkimbi futhi ziqinisekise ukusebenza kwemishini.

Ukumatanisa nekhamera: Izici zokukhanya zokukhanya, njenge-engeli ephumayo kanye nosayizi wendawo kufanele zifane nenkundla yokubuka nobubanzi besithombe bekhamera ukuze kuqinisekiswe ukuthi ikhamera ingakwazi ukuthwebula ngokugcwele nangokucacile isithombe somthambo wesundu wendawo yesundu ekhanyisiwe. Uma isistimu yokuqaphela umthambo wesundu, amapharamitha ekhamera nokukhanya kufanele kucatshangelwe ngokugcwele ukuze kuthuthukiswe ukufanisa futhi kuthuthukiswe ukusebenza kwesistimu. Ekuklanyweni kokulawulwa kokufinyelela kokubonwa kwe-palm vein umshini owodwa-in-one, ukuqinisekisa ukufaniswa kokukhanya nekhamera kungathuthukisa ukunemba kokubonwa nokuzinza kwesistimu yokulawula ukufinyelela.

Sekela i-algorithm yokuqaphela: Umthelela wokukhanya wokukhanya kufanele uhlangabezane nezidingo ze-algorithm yokuqaphela umthambo wesundu ngekhwalithi yesithombe, unikeze i-algorithm ngedatha ecacile nenembile yomthambo wesundu. Isibonelo, kuma-algorithms ancike ekukhishweni kwezici zesithombe esithile, ukukhanya kudinga ukuqinisekisa ukucaca nokugqama kwamaphethini we-palm vein, okwenza kube lula ku-algorithm ukukhomba ngokunembile izici. Lapho uthuthukisa ama-algorithms wokuqaphela i-palm vein, kuyadingeka ukuwathuthukisa ngokusekelwe kumphumela wangempela wokukhanya wokukhanya ukuze uvumelane nezimo nokunemba kwe-algorithm ngaphansi kwezimo ezihlukene zokukhanyisa.