Biometrics yog qhov ntsuas lub cev thiab suav nrog cov yam ntxwv ntawm tib neeg. Biometric authentication (los yog qhov tseeb authentication) yog siv nyob rau hauv computer science raws li ib daim ntawv ntawm kev txheeb xyuas thiab kev tswj xyuas. Nws kuj tseem siv los txheeb xyuas cov tib neeg hauv cov pab pawg uas nyob hauv kev soj ntsuam.

Biometric identifiers yog cov yam ntxwv tshwj xeeb, ntsuas tau siv los sau thiab piav qhia txog tib neeg. Biometric identifiers feem ntau categorized li physiological yam ntxwv uas muaj feem xyuam rau cov duab ntawm lub cev. Piv txwv suav nrog, tab sis tsis txwv rau cov ntiv tes, cov leeg xib teg, lub ntsej muag lees paub, DNA, xibtes luam, tes geometry, iris paub, retina, thiab tsw / ntxhiab.

Biometric identification technology muaj xws li computer science, optics thiab acoustics thiab lwm yam kev tshawb fawb ntawm lub cev, biological sciences, biosensors thiab biostatistics cov hauv paus ntsiab lus, kev ruaj ntseg technology, thiab kev txawj ntse technology thiab ntau lwm yam kev tshawb fawb thiab kev siv technology tshiab. Nws yog ib tug ua tiav multidisciplinary kev daws teeb meem.

Nyob rau hauv xyoo tas los no, nrog rau kev txhim kho ntawm kev txawj ntse txawj ntse, biometric identification technology tau dhau los ua neeg paub tab. Tam sim no, lub ntsej muag paub tshuab yog tus sawv cev tshaj plaws ntawm biometrics.

Lub ntsej muag paub

Cov txheej txheem ntawm kev lees paub lub ntsej muag suav nrog kev sau lub ntsej muag, nrhiav pom lub ntsej muag, lub ntsej muag tshem tawm lub ntsej muag thiab kev lees paub lub ntsej muag zoo sib xws. Cov txheej txheem paub lub ntsej muag siv ntau yam thev naus laus zis xws li AdaBoos algorithm, convolutional neural network thiab txhawb nqa vector tshuab hauv kev kawm tshuab.

Cov txheej txheem ntawm kev paub lub ntsej muag

Tam sim no, cov kev paub txog lub ntsej muag ib txwm muaj teeb meem nrog rau lub ntsej muag tig, occlusion, zoo sib xws, thiab lwm yam tau txhim kho zoo heev, uas ua rau muaj txiaj ntsig zoo ntawm kev paub lub ntsej muag. 2D lub ntsej muag, 3D lub ntsej muag, ntau lub ntsej muag Txhua hom muaj qhov sib txawv ntawm qhov kev hloov pauv hloov pauv, cov ntaub ntawv kev ruaj ntseg degree thiab kev ceev ntiag tug rhiab heev, thiab lwm yam, thiab ntxiv rau kev kawm tob ntawm cov ntaub ntawv loj ua rau 3D lub ntsej muag lees paub algorithm ntxiv qhov tsis xws luag ntawm 2D projection, Nws tuaj yeem txheeb xyuas tus kheej ntawm ib tus neeg sai sai, uas tau ua rau muaj kev cuam tshuam rau daim ntawv thov ntawm ob lub ntsej muag lees paub.

Nyob rau tib lub sijhawm, cov thev naus laus zis tshawb nrhiav biometric tam sim no tau siv los ua cov thev naus laus zis tseem ceeb txhawm rau txhim kho kev ruaj ntseg ntawm lub ntsej muag lees paub, uas tuaj yeem tiv thaiv kev dag ntxias xws li cov duab, yeeb yaj kiab, 3D qauv, thiab lub ntsej muag prosthetic, thiab txiav txim siab tus kheej ntawm tus kheej. cov neeg siv kev ua haujlwm. Tam sim no, nrog rau txoj kev loj hlob sai ntawm lub ntsej muag lub ntsej muag technology, ntau yam kev siv tshiab xws li cov cuab yeej ntse, nyiaj txiag hauv online, thiab kev them nyiaj ntsej muag tau dhau los ua neeg nyiam, ua kom ceev thiab yooj yim rau txhua tus neeg lub neej thiab kev ua haujlwm.

Palmprint paub

Palmprint recognition yog ib hom tshiab ntawm biometric paub technology, uas siv lub palmprint ntawm tib neeg lub cev raws li lub hom phiaj feature, thiab sau cov ntaub ntawv lom los ntawm multispectral imaging technology. Multi-spectral palmprint recognition yuav suav hais tias yog ib tug qauv ntawm biometric paub technology uas combines multi-modality thiab ntau lub hom phiaj nta. Cov thev naus laus zis tshiab no sib xyaw ua ke peb cov yam ntxwv ntawm daim tawv nqaij spectrum, xibtes luam tawm thiab cov hlab ntsha ntawm cov hlab ntsha los muab cov ntaub ntawv ntau dua nyob rau ib zaug thiab ua kom qhov sib txawv ntawm cov hom phiaj.

Xyoo no, Amazon lub xibtes lees paub thev naus laus zis, lub npe hu ua Orville, tau pib sim. Lub tshuab luam ntawv thawj zaug tau txais ib txheej ntawm cov duab infrared polarized thawj cov duab, tsom rau cov yam ntxwv sab nraud ntawm xibtes, xws li kab thiab folds; thaum tau txais cov txheej txheem thib ob ntawm cov duab polarized dua, nws tsom mus rau cov qauv xibtes thiab cov yam ntxwv sab hauv, xws li cov leeg, pob txha, cov ntaub so ntswg, thiab lwm yam. Cov duab nyoos yog thawj zaug ua tiav los muab cov duab uas muaj tes. Cov duab no tau teeb pom kev zoo, ua kom pom tseeb, thiab qhia lub xib teg hauv ib qho kev taw qhia tshwj xeeb, hauv ib qho kev qhia tshwj xeeb, thiab sau tias sab laug lossis sab xis.

Tam sim no, Amazon lub palmprint lees paub thev naus laus zis tuaj yeem txheeb xyuas tus kheej tus kheej thiab ua tiav kev them nyiaj hauv tsuas yog 300 milliseconds, thiab tsis xav kom cov neeg siv muab lawv txhais tes rau ntawm lub tshuab luam ntawv, tsuas yog yoj thiab luam theej duab yam tsis muaj kev sib cuag. Qhov tsis ua tiav ntawm cov cuab yeej no yog kwv yees li 0.0001%. Nyob rau tib lub sijhawm, qhov kev lees paub ntawm palmprint yog ib qho kev txheeb xyuas ob zaug hauv thawj theem - thawj zaug kom tau txais cov yam ntxwv sab nraud, thiab zaum ob kom tau txais cov yam ntxwv hauv lub koom haum. Piv nrog rau lwm yam biometric technologies nyob rau hauv cov nqe lus ntawm kev ruaj ntseg, zoo dua.

Ntxiv rau qhov saum toj no biometric nta, iris paub txog technology kuj tau nrov. Qhov kev lees paub cuav ntawm iris lees paub yog tsawg li 1/1000000. Nws tsuas yog siv cov yam ntxwv ntawm iris lub neej invariance thiab sib txawv los txheeb xyuas tus kheej.

Tam sim no, qhov kev pom zoo hauv kev lag luam yog tias kev lees paub ntawm ib qho kev hloov pauv muaj qhov tsis txaus ntseeg hauv ob qho tib si kev paub txog kev ua tau zoo thiab kev ruaj ntseg, thiab ntau hom kev sib xyaw ua ke yog qhov tseem ceeb ntawm kev paub txog lub ntsej muag thiab txawm tias biometric paub - tsis yog los ntawm ntau yam. los txhim kho qhov kev lees paub qhov tseeb tuaj yeem txhim kho qhov kev hloov pauv ntawm qhov chaw thiab kev ruaj ntseg ntiag tug ntawm biometric technology rau qee yam. Piv nrog rau cov txheej txheem ib txwm ua ib hom algorithm, nws tuaj yeem ua tau zoo dua ntawm kev lees paub txog nyiaj txiag tsis tseeb (tsawg li ib qho ntawm kaum lab), uas kuj yog qhov tseem ceeb ntawm kev txhim kho kev txheeb xyuas biometric.

Multimodal biometric system

Multimodal biometric systems siv ntau lub sensors lossis biometrics txhawm rau kov yeej cov kev txwv ntawm unimodal biometric systems.Piv txwv li iris paub cov tshuab tuaj yeem cuam tshuam los ntawm kev laus irises thiab hluav taws xob paub txog cov ntiv tes tuaj yeem ua phem los ntawm kev hnav lossis txiav cov ntiv tes. Txawm hais tias unimodal biometric systems raug txwv los ntawm kev ncaj ncees ntawm lawv cov cim, nws tsis zoo li ntau lub tshuab unimodal yuav raug kev txom nyem los ntawm cov kev txwv zoo ib yam. Multimodal biometric systems tuaj yeem tau txais cov ntaub ntawv los ntawm tib lub cim (piv txwv li, ntau cov duab ntawm iris, lossis scans ntawm tib tus ntiv tes) lossis cov ntaub ntawv los ntawm cov biometrics sib txawv (yuav tsum tau ntsuas tus ntiv tes thiab, siv lub suab lees paub, tus lej hais lus).

Multimodal biometric systems tuaj yeem fuse cov tshuab unimodal ua ntu zus, ib txhij, kev sib xyaw ua ke, lossis hauv series, uas xa mus rau cov qauv sib txuas, sib luag, hierarchical thiab serial integration, feem.

CHANCCTVtau tsim ib tug series ntawmbiometric lo ntsiab muagrau kev paub lub ntsej muag, kev paub txog lub ntsej muag nrog rau kev txheeb xyuas tus ntiv tes thiab iris identification.Piv txwv li CH3659A yog 4k low distortion lens uas tau tsim los rau 1/1.8 '' sensors. Nws nta tag nrho cov iav thiab compact tsim nrog mere 11.95mm TTL. Nws captures 44 degrees kab rov tav teb saib. Lub lens no yog qhov zoo tagnrho rau kev paub txog palmprint.