Cov kws tshawb fawb los ntawm National University of Singapore thiab Yonsei University (Korea) tau tsim ib txoj hauv kev los kuaj xyuas cov koob yees duab zais hauv tsev siv lub xov tooj smartphone tsis tu ncua nrog ToF (Lub Sijhawm Dav Hlau) sensor. Nws tau raug sau tseg tias tam sim no lub koob yees duab zais tuaj yeem yuav tau rau me ntsis ntau dua li ib duas las thiab cov koob yees duab zoo li no yog 1-2 millimeters loj, uas ua rau lawv nyuaj rau nrhiav hauv tsev. Hauv Kaus Lim Qab Teb, ntau dua 6800 qhov xwm txheej cuam tshuam nrog kev tso cov koob yees duab zais hauv cov chav tsev so lossis chav dej tau kaw thaum lub xyoo.
LAPD (Laser-Assisted Photography Detection) txoj kev npaj los ntawm cov kws tshawb fawb ua rau nws tuaj yeem ntes cov koob yees duab zais siv cov xov tooj smartphones niaj hnub nruab nrog lub ntsuas qhov tob (ToF), siv los kwv yees qhov deb ntawm cov khoom thaum tsom lub koob yees duab thiab hauv cov ntawv thov kev muaj tiag. Piv txwv ntawm cov smartphones uas siv cov sensors xws li Samsung S20 thiab Huawei P30 Pro. Lub sensor tsim ib daim ntawv qhia qhov tob los ntawm kev txheeb xyuas thaj chaw ib puag ncig nrog lub laser thiab xam qhov deb raws li qhov tuaj txog ncua ntawm lub teeb pom kev zoo.
Cov txheej txheem rau kev txheeb xyuas cov koob yees duab zais yog ua raws li kev txheeb xyuas qhov tsis sib xws hauv laser illumination ntawm cov lo ntsiab muag thiab lo ntsiab muag, uas tsim cov ntsiab lus tshwj xeeb ntawm daim ntawv qhia qhov tob. Kev kuaj pom tsis zoo yog siv lub tshuab kev kawm algorithm uas tuaj yeem paub qhov txawv ntawm lub koob yees duab tshwj xeeb glare. Cov kws sau ntawv ntawm txoj kev tshawb fawb npaj siab yuav tshaj tawm cov ntawv thov npaj rau Android platform tom qab daws qee qhov teeb meem nrog API txwv.
Tag nrho lub sij hawm yuav tsum tau soj ntsuam ib chav yog kwv yees li 30-60 vib nas this. Hauv kev sim ua nrog 379 tus neeg tuaj yeem pab dawb, zais lub koob yees duab siv LAPD txoj kev kuaj pom hauv 88.9% ntawm cov neeg mob. Rau kev sib piv, tsuas yog 46% ntawm cov neeg koom nrog kev sim tuaj yeem pom cov koob yees duab ntawm lub qhov muag, thiab qhov ua tau zoo ntawm kev siv K18 teeb liab tshwj xeeb yog 62.3% thiab 57.7%, nyob ntawm seb hom kev xaiv scanning. Txoj kev LAPD kuj tau pom qhov tsis tseeb qis dua - 16.67% piv rau 26.9% / 35.2% rau K18 thiab 54.9% rau qhov muag tshawb.
Qhov tseeb ntawm LAPD kev tshawb pom nyob ntawm lub koob yees duab zais nkag mus rau 20-degree saib lub kaum ntse ntse ntawm lub sensor thiab nyob ntawm qhov pom kev deb ntawm lub sensor (yog tias nws ze dhau, lub teeb ci ntawm lub koob yees duab yog qhov muag plooj, thiab yog tias nws nyob deb dhau lawm. deb, nws ploj). Txhawm rau kom qhov tseeb, nws tau thov kom siv cov sensors nrog kev daws teeb meem siab dua (hauv cov xov tooj smartphones muaj rau cov kws tshawb fawb, qhov kev daws teeb meem ntawm ToF sensor yog 320 Γ 240, piv txwv li qhov loj ntawm qhov tsis sib xws hauv daim duab tsuas yog 1-2 pixels) thiab qhov tob. nthuav dav (tam sim no tsuas muaj 8 rau txhua pixel qhov tob).
Lwm txoj hauv kev los ntsuam xyuas lub xub ntiag ntawm lub koob yees duab zais suav nrog cov kev ntsuas tsheb tsis sib xws, uas txiav txim siab qhov muaj cov vis dis aus tshaj tawm hauv wireless network, nrog rau cov tshuab hluav taws xob hluav taws xob hluav taws xob.
Tau qhov twg los: opennet.ru