Ibali eliyimpumelelo lokufota oblique

Imeko eyimpumelelo yokufota i-oblique

——Sebenzisa imodeli ye-3D ukwenza uphando lwe-cadastral kwiindawo eziphakamileyo

1. Isishwankathelo

Emva kweminyaka eliqela yophuhliso, ngoku e-China, ukufota nge-oblique kuye kwasetyenziswa ngokubanzi kwiiprojekthi zovavanyo lwecadastral yasemaphandleni. Nangona kunjalo, ngenxa yothintelo lwezixhobo zeemeko zobugcisa, ukufotwa kwe-oblique kusebuthathaka kumlinganiso we-cadastral wemifanekiso yethontsi enkulu, ngakumbi ngenxa yokuba ubude obugxilwe kunye nefomathi yefoto yelensi yekhamera ejiyileyo ayifikanga kwinqanaba. Emva kweminyaka emininzi yamava eprojekthi, siye safumanisa ukuba ukuchaneka kwemephu kufuneka kube ngaphakathi kwe-5 cm, ngoko i-GSD kufuneka ibe ngaphakathi kwe-2 cm, kwaye imodeli ye-3D kufuneka ibe yinto enhle kakhulu, imiphetho yesakhiwo kufuneka iqonde kwaye icace.

Ngokubanzi, ubude bojoliso lwekhamera olusetyenziselwa iiprojekthi zokulinganisa i-cadastral yasemaphandleni yi-25mm ngokuthe nkqo kunye ne-35mm oblique. Ukuze ufezekise ukuchaneka kwe-1: 500, i-GSD kufuneka ibe ngaphakathi kwe-2 cm. Kwaye ukuqinisekisa ukuba, umphakamo wokubhabha wedrones uphakathi kwe70m-100m. Ngokwalo kuphakama kwendiza, akukho ndlela yokugqiba ukuqokelelwa kwedatha ye-100m-phezulu-phezulu izakhiwo.Nokuba uqhuba indiza kunjalo, ayinakuqinisekisa ukugqithwa kwamaphahla, okubangela umgangatho ombi wemodeli. .Kwaye ngenxa yokuba ubude bomlo buphantsi kakhulu, kuyingozi kakhulu kwi-UAV.

Ukuze kulungiswe le ngxaki, ngoMeyi ka-2019, senze uvavanyo lokuqinisekisa ukuchaneka kwe-Oblique Photography yezakhiwo eziphakamileyo ezidolophini. Injongo yolu vavanyo kukuqinisekisa ukuba ukuchaneka kokugqibela kwemephu yemodeli ye-3D eyakhiwe yikhamera ye-oblique ye-RIY-DG4pros inokuhlangabezana neemfuno ze-5 cm RMSE.

2. Inkqubo yovavanyo

Izixhobo

Kolu vavanyo, sikhetha i-DJI M600PRO, exhotyiswe ngekhamera ye-Rainpoo RIY-DG4pros oblique yeelensi ezintlanu.

Indawo yovavanyo kunye nesicwangciso samanqaku olawulo

Ukuphendula ezi ngxaki zingentla, kunye nokwandisa ubunzima, sikhethe ngokukodwa iiseli ezimbini ezinobude obuphakathi kwesakhiwo seemitha ezili-100 zokuvavanya.

Amanqaku olawulo acwangciswe kwangaphambili ngokwe GOOGLE mephu, kwaye imeko-bume engqongileyo kufuneka ivuleke kwaye ingathinteleki kangangoko. Umgama phakathi kwamanqaku kuluhlu lwe-150-200M.

Indawo yokulawula i-80 * 80 yesikwele, ihlulwe ngobomvu kunye nephuzi ngokwe-diagonal, ukwenzela ukuba kuqinisekiswe ukuba i-point center inokuchongwa ngokucacileyo xa umboniso unamandla kakhulu okanye ukukhanya akwanelanga, ukuphucula ukuchaneka.

Isicwangciso seNdlela ye-UAV

Ukuze siqinisekise ukukhuseleka kokusebenza, sigcine ukuphakama okukhuselekileyo kweemitha ezingama-60, kwaye i-UAV yahamba ngeemitha ezili-160. Ukuqinisekisa ukugqithelana kophahla, siphinde sanyusa izinga lokudityaniswa. Ireyithi yokuwela i-longitudinal yi-85% kwaye ireyithi yokuwela i-transversal yi-80%, kwaye i-UAV yahamba ngesantya se-9.8m / s.

Ingxelo ye-Aerial Triangulation (AT).

Sebenzisa isoftware "yeSky-Scanner" (Eyiphuhliswe yiRainpoo) ukukhuphela kunye nokucubungula iifoto zoqobo, emva koko uzingenise kwisoftware ye-ContextCapture 3D yokumisela ngeqhosha elinye.

15h.

NGEXESHA:15h.
23h.

Imodeli ye-3D

ixesha: 23h.

Ingxelo yokuphazamiseka kweLens

Ukusuka kumzobo wegridi egqwethekileyo, kunokubonwa ukuba i-lens yokuphazamiseka kwe-RIY-DG4pros incinci kakhulu, kwaye i-circumference iphantse ihambelana ngokupheleleyo nesikwere esiqhelekileyo;

Impazamo yokuchasa i-RMS

Siyabulela kwi-teknoloji ye-optical ye-Rainpoo, sinokulawula ixabiso le-RMS ngaphakathi kwe-0.55, eyona parameter ebalulekileyo ekuchanekeni kwemodeli ye-3D.

Ungqamaniso lwe-lens ezintlanu

Kuyabonakala ukuba umgama phakathi kwendawo ephambili yelensi ethe nkqo yeziko kunye neyona ngongoma iphambili yeelensi ezisityebi zezi: 1.63cm, 4.02cm, 4.68cm, 7.99cm, thabatha umahluko wokwenyani wesikhundla, amaxabiso empazamo ngala: - 4.37cm, -1.98cm, -1.32cm, 1.99cm, umahluko omkhulu wesikhundla ngu-4.37cm, ukuvumelanisa kwekhamera kunokulawulwa ngaphakathi kwe-5ms;

Khangela impazamo

I-RMS yamanqaku olawulo aqikelelweyo kunye nawoqobo asuka kwi-0.12 ukuya kwi-0.47 pixels.

3. Imodeli ye-3D

Umboniso Womfuziselo

Bonisa iinkcukacha

Siyabona ukuba ngenxa yokuba i-RIY-DG4pros isebenzisa iilensi ezinde ezigxininisiweyo, indlu esezantsi kwemodeli ye-3d icace gca ukubona. Elona xesha lincinci lokuvezwa kwekhamera linokufikelela kwi-0.6s, ngoko ke nokuba ireyithi ethe kratya ye-longitudinal inyusiwe ukuya kuma-85%, akukho foto-leakge eyenzekayo.
Iinyawo zezakhiwo eziphakamileyo eziphakamileyo zicacile kwaye zithe tye ngokuthe ngqo, nto leyo eqinisekisa ukuba sinokufumana iinyawo ezichanekileyo kwimodeli kamva.

4. Ukuhlola ukuchaneka

Sisebenzisa isikhululo siphelele ukuqokelela idatha yesikhundla sokutshekisha kwaye emva koko singenise ifayile yeDAT kwiCAD. Emva koko uthelekise ngokuthe ngqo amanqaku abeka idatha kwimodeli ukuze ubone ukungafani kwabo.
Sisebenzisa isikhululo siphelele ukuqokelela idatha yesikhundla sokutshekisha kwaye emva koko singenise ifayile yeDAT kwiCAD. Emva koko uthelekise ngokuthe ngqo amanqaku abeka idatha kwimodeli ukuze ubone ukungafani kwabo.

5. Isiphelo

Kulo vavanyo, ubunzima kukuba ukuhla okuphezulu kunye nokuphantsi kwendawo, ukuxinana okuphezulu kwendlu kunye nomgangatho onzima. Ezi zinto ziya kubangela ukwanda kobunzima bokubhabha , umngcipheko ophezulu, kunye nemodeli embi kakhulu ye-3D , eya kukhokelela ekunciphiseni ukuchaneka kwi-survey ye-cadastral.

Ngenxa yokuba ubude be-RIY-DG4pros ubude bude kuneekhamera eziqhelekileyo ezigudileyo, iqinisekisa ukuba i-UAV yethu inokubhabha kwindawo ekhuselekileyo ngokwaneleyo, kwaye isisombululo somfanekiso wezinto ezisemhlabeni singaphakathi kwe-2 cm. Ngelo xesha, i-lens ye-full-frame inokusinceda ukuba sibambe ii-angles ezininzi zezindlu xa sihamba ngeenqwelo-moya kwiindawo zokwakha ezixineneyo, ngaloo ndlela siphucula umgangatho wemodeli ye-3D. Ngaphantsi kwesiseko sokuba zonke izixhobo ze-hardware ziqinisekisiwe, sikwaphucula ukugqithwa kwendiza kunye nobuninzi bokusabalalisa amanqaku okulawula ukuqinisekisa ukuchaneka kwemodeli ye-3D.

ukufotowa kwe-oblique kwiindawo eziphakamileyo ze-cadastral survey, kanye ngenxa yokulinganiselwa kwezixhobo kunye nokungabikho kwamava, kunokulinganiswa kuphela ngeendlela zendabuko. Kodwa impembelelo yezakhiwo eziphakamileyo kwi-RTK yesiginali nayo ibangela ubunzima kunye nokuchaneka okungalunganga kokulinganisa. Ukuba sinokusebenzisa i-UAV ukuqokelela idatha, impembelelo yezibonakaliso zesathelayithi inokupheliswa ngokupheleleyo, kwaye ukuchaneka ngokubanzi kokulinganisa kunokuphuculwa kakhulu. Ngoko impumelelo yolu vavanyo ibaluleke kakhulu kuthi.

Olu vavanyo lubonisa ukuba i-RIY-DG4pros inokulawula ngokwenene i-RMS ukuya kuluhlu oluncinci lwexabiso, ine-3D efanelekileyo yokuchaneka kwemodeli, kwaye inokusetyenziswa kwiiprojekthi zokulinganisa ezichanekileyo zezakhiwo eziphakamileyo.

Ngaphambili:Yintoni ukusebenza kakuhle kwe-DG4Pros? Ndizicwangcisa njani iiparamitha ezifanelekileyo?

Okulandelayo:Indlela i-chromatic aberration kunye nokugqwesa kuyichaphazela ngayo i-ima

Buyela