Ewe, lo ngumbuzo osengqiqweni kodwa ongenampendulo ilula.Kukho izinto ezininzi ezinokuthi zichaphazele iziphumo, ezifana nokuthotywa kweemeko zemozulu ezahlukeneyo, uvakalelo lwe-thermal detector, i-algorithm ye-imaging, i-dead-point kunye ne-background ground ingxolo, kunye ne-target target yeqondo lokushisa.Umzekelo, i-cigarette butt ibonakala ngokucacileyo kunamagqabi asemthini kumgama ofanayo nokuba incinci kakhulu, ngenxa yomahluko weqondo lobushushu ekujoliswe kulo.
Umgama wokufumanisa sisiphumo sokuhlanganiswa kwezinto ezizimeleyo kunye nezinto ezinenjongo.Inxulumene nengqondo ebonwayo yomkhi-mkhiqizi, amava kunye nezinye izinto.Ukuphendula "ukude kangakanani ukubona ikhamera ye-thermal", kufuneka sifumanise ukuba ithetha ukuthini kuqala.Umzekelo, ukufumana into ekujoliswe kuyo, ngelixa u-A ecinga ukuba unokuyibona ngokucacileyo, u-B akanako.Ngoko ke, kufuneka kubekho umgangatho wovandlakanyo olunenjongo nolumanyeneyo.
Iikhrayitheriya zikaJohnson
UJohnson wathelekisa ingxaki yokubona iliso kunye neeperi zomgca ngokovavanyo.Umgca wesibini ngumgama othotyiweyo phakathi kokukhanya okunxuseneyo kunye nomgca omnyama kumda wokubonwayo kombukeli.Isibini somgca silingana neepixels ezimbini.Uphononongo oluninzi lubonise ukuba kunokwenzeka ukugqiba ikhono lokuqaphela ekujoliswe kulo lwe-infrared thermal imager system ngokusebenzisa izibini zomgca ngaphandle kokuqwalasela uhlobo lwenjongo kunye neziphene zemifanekiso.
Umfanekiso wethagethi nganye kwinqwelomoya ekugxilwe kuyo ithatha ipixels ezimbalwa, ezinokubalwa ukusuka kubukhulu, umgama phakathi kwethagethi kunye nomfanekiso we-thermal, kunye nentsimi yokujonga ngokukhawuleza (IFOV).Umlinganiselo wesayizi ekujoliswe kuyo (d) ukuya kumgama (L) ubizwa ngokuba yi-angle yokuvula.Inokwahlulwa yi-IFOV ukufumana inani leepikseli ezithathwe ngumfanekiso, oko kukuthi, n = (D / L) / IFOV = (DF) / (LD).Ingabonwa ukuba ubukhulu bobude obugxininisiweyo, kokukhona amanqaku aphambili athathwe ngumfanekiso ekujoliswe kuwo.Ngokwekhrayitheriya kaJohnson, umgama wokubona ukude.Kwelinye icala, ubukhulu bobude obugxininisiweyo, buncinci i-engile yentsimi, kwaye ixabiso liya kuba phezulu.
Singabala ukuba ungakanani umfanekiso oshushu onokubonwa ngokusekwe kwizigqibo ezisezantsi ngokwemigaqo kaJohnson zezi:
Ukufunyanwa – into ekhoyo: 2 +1/-0.5 pixels
Ukuqaphela - uhlobo lwento inokuqondwa, umntu vs. imoto: 8 +1.6 / -0.4 pixels
Ukuchongwa - into ethile inokuqondwa, umfazi vs indoda, imoto ethile: 12.8 +3.2 / -2.8 pixels
Le milinganiselo inika amathuba angama-50% okuba umboniseli acalule into ukuya kwinqanaba elichaziweyo.
Ixesha lokuposa: Nov-23-2021