Masu bincike daga Jami'ar Kasa ta Singapore da Jami'ar Yonsei (Korea) sun kirkiro wata hanya don gano kyamarori masu ɓoye a cikin gida ta hanyar amfani da wayar salula ta yau da kullum da ke dauke da firikwensin ToF (Lokacin tashi). An lura cewa a halin yanzu ana iya siyan kyamarar da aka boye akan dan kadan fiye da dala kuma irin wadannan kyamarori suna da girman milimita 1-2, wanda ke sa su fi wuya a samu a cikin gida. A Koriya ta Kudu, sama da al'amura 6800 da suka shafi sanya na'urar daukar hoto da aka boye a dakunan otal ko dakunan wanka an yi rikodin a cikin shekarar.
Hanyar LAPD (Laser-Assisted Photography Detection) wanda masu binciken suka gabatar ya ba da damar gano kyamarori masu ɓoye ta amfani da wayoyin zamani na zamani sanye da firikwensin zurfin firikwensin (ToF), ana amfani da su don ƙididdige nisa zuwa abubuwa lokacin da aka mayar da hankali kan kyamarar kuma a cikin ƙarin aikace-aikacen gaskiya. Misalan wayoyin hannu masu amfani da irin waɗannan na'urori sun haɗa da Samsung S20 da Huawei P30 Pro. Na'urar firikwensin yana gina taswira mai zurfi ta hanyar duba wurin da ke kewaye tare da laser da ƙididdige nisa dangane da jinkirin isowa na katako mai haske.
Hanyar gano kyamarori masu ɓoye sun dogara ne akan gano abubuwan da ba su da kyau a cikin hasken laser na ruwan tabarau da ruwan tabarau, waɗanda ke haifar da takamaiman bayanai akan taswirar zurfin sakamakon. Ana gano abubuwan da ba su dace ba ta amfani da algorithm na koyon inji wanda zai iya bambance takamaiman haske na kyamara. Marubutan binciken sun yi niyyar buga aikace-aikacen da aka shirya don dandamalin Android bayan warware wasu matsaloli tare da iyakokin API.
An kiyasta jimlar lokacin da ake buƙata don duba ɗaki zuwa 30-60 seconds. A cikin gwajin da aka gudanar tare da masu sa kai 379, an gano kyamarorin ɓoye masu amfani da hanyar LAPD a cikin 88.9% na lokuta. Don kwatanta, kawai 46% na mahalarta gwajin sun sami damar samun kyamarori ta ido, kuma ingancin amfani da na'urar gano siginar K18 na musamman shine 62.3% da 57.7%, dangane da yanayin da aka zaɓa. Har ila yau, hanyar LAPD ta nuna ƙarancin ƙimar ƙimar ƙarya - 16.67% zuwa 26.9%/35.2% don K18 da 54.9% don binciken ido.
Daidaiton gano LAPD ya dogara ne akan ɓoyayyen kyamarar da ke shiga kusurwar kallo na digiri 20 na firikwensin kuma kasancewa a mafi kyawun nisa daga firikwensin (idan ya yi kusa sosai, hasken kamara yana blur, kuma idan ya yi nisa sosai). nesa, bace). Don inganta daidaito, an ba da shawarar yin amfani da na'urori masu auna firikwensin da ƙuduri mafi girma (a cikin wayoyin hannu da ke samuwa ga masu bincike, ƙudurin firikwensin ToF shine 320 × 240, watau girman anomaly a cikin hoton shine kawai 1-2 pixels) da zurfin zurfi. daki-daki (a halin yanzu akwai 8 kawai ga kowane zurfin matakan pixel).
Sauran hanyoyin tantance kasancewar na’urar kamara ta boye sun hada da na’urorin tantance zirga-zirgar ababen hawa, wadanda ke tantance kasancewar yawo da bidiyo ta hanyar sadarwa mara waya, da kuma na’urar daukar hoto ta electromagnetic radiation.
source: budenet.ru