Ma biometric ndi miyeso ya thupi ndi mawerengedwe okhudzana ndi mawonekedwe amunthu. Kutsimikizika kwa biometric (kapena kutsimikizika kowona) kumagwiritsidwa ntchito mu sayansi yamakompyuta ngati njira yozindikiritsira ndikuwongolera mwayi. Amagwiritsidwanso ntchito pozindikira anthu m'magulu omwe akuwayang'anira.

Zozindikiritsa za Biometric ndizosiyana, zoyezeka zomwe zimagwiritsidwa ntchito polemba ndi kufotokozera anthu pawokha. Zozindikiritsa za biometric nthawi zambiri zimagawidwa ngati mawonekedwe a thupi omwe amakhudzana ndi mawonekedwe a thupi. Zitsanzo zikuphatikiza, koma sizimangokhala ndi zala, mitsempha ya kanjedza, kuzindikira nkhope, DNA, kusindikiza kwa kanjedza, geometry yamanja, kuzindikira kwa iris, retina, ndi fungo/fungo.

Ukadaulo wozindikiritsa wa biometric umaphatikizapo sayansi yamakompyuta, ma optics ndi ma acoustics ndi sayansi ina yakuthupi, sayansi yazachilengedwe, biosensors ndi mfundo za biostatistics, ukadaulo wachitetezo, ukadaulo wanzeru zopangira ndi masayansi ena ambiri oyambira ndi matekinoloje ogwiritsira ntchito. Ndi njira zonse zaukadaulo zamitundumitundu.

M'zaka zaposachedwa, ndi chitukuko cha luntha lochita kupanga, ukadaulo wozindikiritsa biometric wakula kwambiri. Pakadali pano, ukadaulo wozindikira nkhope ndiwoyimira kwambiri ma biometric.

Kuzindikira nkhope

Njira yozindikiritsa nkhope imaphatikizapo kusonkhanitsa nkhope, kuzindikira nkhope, kuchotsa mawonekedwe a nkhope ndi kuzindikira kufanana ndi nkhope. Njira yozindikiritsa nkhope imagwiritsa ntchito matekinoloje osiyanasiyana monga AdaBoos algorithm, convolutional neural network ndi makina othandizira vekitala pophunzira makina.

Njira yozindikiritsa nkhope

Pakalipano, zovuta zozindikiritsa nkhope zachikhalidwe kuphatikizapo kusinthasintha nkhope, kutsekeka, kufanana, ndi zina zotero zasinthidwa kwambiri, zomwe zimawongolera kwambiri kulondola kwa kuzindikira nkhope. Nkhope ya 2D, nkhope ya 3D, nkhope yamitundu yambiri Iliyonse imakhala ndi mawonekedwe osiyanasiyana otengera kutengera, digiri ya chitetezo cha data ndi chidwi chachinsinsi, ndi zina zambiri, ndipo kuwonjezera kwa kuphunzira mozama kwa data yayikulu kumapangitsa kuti 3D algorithm yozindikira nkhope iwonjezere zolakwika za projekiti ya 2D, Ikhoza kuzindikira msanga munthu, zomwe zabweretsa kupambana kwina kwa kugwiritsa ntchito kuzindikira nkhope yamitundu iwiri.

Nthawi yomweyo, ukadaulo wodziwikiratu wa biometric pakadali pano ukugwiritsidwa ntchito ngati ukadaulo wofunikira pakuwongolera chitetezo cha kuzindikira nkhope, chomwe chimatha kukana chinyengo chachinyengo monga zithunzi, makanema, mitundu ya 3D, ndi masks opangira ma prosthetic, ndikudziwikiratu kuti ndi ndani. ogwiritsa ntchito. Pakalipano, ndi chitukuko chachangu cha luso la kuzindikira nkhope, ntchito zambiri zatsopano monga zipangizo zamakono, ndalama zapaintaneti, ndi malipiro a nkhope zakhala zikudziwika kwambiri, zomwe zikubweretsa liwiro ndi kuphweka kwa moyo ndi ntchito ya aliyense.

Kuzindikira kwa Palmprint

Kuzindikira kwa Palmprint ndi mtundu watsopano waukadaulo wozindikiritsa biometric, womwe umagwiritsa ntchito palprint ya thupi la munthu ngati chinthu chomwe mukufuna, ndikusonkhanitsa chidziwitso chachilengedwe kudzera muukadaulo wojambula wamitundu yosiyanasiyana. Kuzindikirika kwa palmprint kwamitundu yambiri kumatha kuonedwa ngati chitsanzo chaukadaulo wozindikiritsa ma biometric omwe amaphatikiza mitundu yambiri komanso mawonekedwe ambiri. Ukadaulo watsopanowu umaphatikiza zinthu zitatu zozindikirika za mawonekedwe a khungu, kusindikiza kwa kanjedza ndi mitsempha ya mitsempha kuti ipereke chidziwitso chochulukirapo nthawi imodzi ndikuwonjezera kusiyanitsa kwa zomwe mukufuna.

Chaka chino, ukadaulo wozindikiritsa mitengo ya Amazon ku Amazon, dzina lake Orville, wayamba kuyesa. Chojambulira choyamba chimapeza zithunzi zoyambira za infrared polarized, zomwe zimayang'ana zakunja za kanjedza, monga mizere ndi mapindikidwe; pamene kupeza seti yachiwiri ya zithunzi polarized kachiwiri, imayang'ana pa kanjedza dongosolo ndi mbali zamkati, monga mitsempha, mafupa, zofewa zimakhala, etc. yaiwisi zithunzi poyamba kukonzedwa kuti apereke seti ya zithunzi munali manja. Zithunzizi zimakhala zowala bwino, zolunjika, ndipo zimasonyeza chikhathocho mumayendedwe ake enieni, mu mawonekedwe ake enieni, ndipo amalembedwa kuti ndi dzanja lamanzere kapena lamanja.

Pakadali pano, ukadaulo wozindikiritsa palmprint waku Amazon utha kutsimikizira kuti ndi ndani komanso kulipira kwathunthu mu ma milliseconds 300 okha, ndipo safuna kuti ogwiritsa ntchito aike manja awo pachida chojambulira, kungogwedeza ndikujambula popanda kulumikizana. Mlingo wolephera waukadaulo uwu ndi pafupifupi 0.0001%. Panthawi imodzimodziyo, kuzindikira kwa palmprint ndikutsimikiziranso kawiri pa gawo loyamba - nthawi yoyamba kupeza makhalidwe akunja, ndipo kachiwiri kupeza makhalidwe a bungwe lamkati. Poyerekeza ndi matekinoloje ena a biometric pankhani yachitetezo, yasinthidwa.

Kuphatikiza pazomwe zili pamwambazi, ukadaulo wozindikiritsa iris ukufalikiranso. Mlingo wozindikirika wabodza wa kuzindikira kwa iris ndiotsika ngati 1/1000000. Imagwiritsira ntchito makamaka mawonekedwe a moyo wa iris wosasintha ndi kusiyana kuti azindikire zomwe zili.

Pakalipano, mgwirizano mu makampani ndi kuti kuzindikira kwa njira imodzi kumakhala ndi zovuta pazochitika zonse zozindikirika ndi chitetezo, ndipo kuphatikizika kwamitundu yambiri ndikopambana kofunikira pakuzindikiritsa nkhope komanso kuzindikira kwa biometric-osati kokha kudzera muzinthu zambiri Njirayi. kuwongolera kuzindikira kulondola kungathandizenso kusintha mawonekedwe ndi chitetezo chachinsinsi chaukadaulo wa biometric pamlingo wina. Poyerekeza ndi chikhalidwe cha single-mode aligorivimu, imatha kukwaniritsa bwino ndalama zozindikiritsa zabodza (zotsika ngati imodzi mwa miliyoni khumi), yomwenso ndi njira yayikulu yopangira chidziwitso cha biometric.

Multimodal biometric system

Ma multimodal biometric system amagwiritsa ntchito masensa angapo kapena ma biometrics kuti athe kuthana ndi malire a unimodal biometric system.Mwachitsanzo njira zozindikiritsa iris zitha kusokonezedwa ndi irises yokalamba ndipo kuzindikira zala zamagetsi kumatha kuipitsidwa ndi zidindo zotopa kapena zodulidwa. Ngakhale makina a unimodal biometric ali ndi malire chifukwa cha kukhulupirika kwa chizindikiritso chawo, sizokayikitsa kuti ma unimodal angapo angavutike ndi malire ofanana. Ma multimodal biometric amatha kupeza zidziwitso kuchokera pachizindikiro chimodzi (mwachitsanzo, zithunzi zingapo za iris, kapena masikelo a chala chimodzi) kapena chidziwitso kuchokera ku ma biometric osiyanasiyana (ofuna masikelo a zala ndi, kugwiritsa ntchito kuzindikira mawu, chiphaso cholankhulidwa).

Multimodal biometric machitidwe amatha kuphatikizira machitidwe osasinthikawa motsatizana, nthawi imodzi, kuphatikiza kwake, kapena mndandanda, womwe umatanthawuza njira zotsatizana, zofananira, zotsogola komanso zophatikizira motsatana.

CHANCCTVwapanga mndandanda wamagalasi a biometricpozindikiritsa nkhope, kuzindikira kwa palmprint komanso zala zala komanso kuzindikiritsa iris.Mwachitsanzo CH3659A ndi mandala a 4k otsika omwe adapangidwira masensa 1/1.8''. Imakhala ndi magalasi onse komanso mapangidwe ophatikizika okhala ndi 11.95mm TTL chabe. Imagwira 44 digiri yopingasa yowonekera. Lens iyi ndi yabwino kuzindikira palmprint.