Hurefu hwefocal hunokanganisa sei 3D modelling results

1. Nhanganyaya

Kune oblique kutora mafoto, kune mana mapikicha akaoma kwazvo kuvaka 3D mhando:

The reflective surface iyo isingagoni kuratidza chaiyo texture information yechinhu.Somuenzaniso, pamusoro pemvura, girazi, nzvimbo huru single texture surface zvivakwa.

Zvinhu zvinononoka kufamba. Somuenzaniso, motokari pamharadzano

Zviratidziro umo maficha-mapoinzi asingakwanisi kufananidzwa kana maficha-mapoinzi ane zvikanganiso zvakakura, semiti nemakwenzi.

Hollow yakaoma zvivakwa. Zvakadai sevarindi, zviteshi zvepasi, shongwe, waya, nezvimwe.

Kune mhando 1 uye 2 zviratidziro, zvisinei kuti ungavandudza sei kunaka kweiyo data yepakutanga, iyo 3D modhi haizovandudza zvakadaro.

Kune mhando 3 uye mhando 4 zviratidziro, mukushanda chaiko, unogona kuvandudza mhando yemhando ye3D nekuvandudza kugadzirisa, asi zvichiri nyore kuve nemavoids nemaburi mumuenzaniso, uye kushanda kwayo kunenge kwakadzikira.

Pamusoro pezviratidziro zviri pamusoro apa, muiyo 3D modelling process, chatinonyanya kutarisisa ndeye 3D modhi yemhando yezvivakwa. Nekuda kwematambudziko ane chekuita nekugadzika maparamita ekubhururuka, mamiriro emwenje, dhizaini yekutora data, 3D modelling software, nezvimwewo, zvakare zviri nyore kuita kuti chivakwa chiratidze: ghosting, kudhirowa, kunyungudika, dislocation, deformation, adhesion, nezvimwe. .

Ehe, matambudziko ataurwa pamusoro anogona zvakare kuvandudzwa ne 3D modhi-modhi. Nekudaro, kana iwe uchida kuita yakakura-yemhando yekushandura basa, mutengo wemari nenguva uchave wakakura kwazvo.

3D modhi isati yagadziriswa

3D modhi mushure mekugadzirisa

Semugadziri weR & D weoblique kamera, Rainpoo inofunga kubva pamaonero ekuunganidza data:

Maitiro ekugadzira oblique kamera kuti ibudirire kuvandudza mhando ye3D modhi pasina kuwedzera kupindirana kwenzira yekubhururuka kana nhamba yemifananidzo?

2, Chii chinonzi focal urefu

Kureba kwelenzi kunokosha zvikuru.Inotarisa ukuru hwechinyorwa pamufananidzo wemifananidzo, wakaenzana nechiyero chechinhu uye mufananidzo. Paunenge uchishandisa dhijitari ichiri kamera (DSC), sensor inonyanya kuve CCD neCMOS. Kana DSC ichishandiswa muaerial -survey, iyo yakatarisa kureba inotarisa pasi sampling chinhambwe (GSD).

Paunenge uchipfura chinhu chimwe chete chaunonangidzirwa pachinhambwe chimwe chete, shandisa lenzi ine kureba kwakatarisa, mufananidzo wechinhu ichi wakakura, uye lenzi ine hurefu hwekutarisa hupfupi idiki.

Hurefu hwepakati hunotara hukuru hwechinhu chiri mumufananidzo, kona yekutarisa, kudzika kwemunda uye maonero emufananidzo. Zvichienderana nekushandiswa, kureba kwekutarisa kunogona kuve kwakasiyana kwazvo, kubva pamamirimita mashoma kusvika pamamita mashoma. Kazhinji, yekutora mifananidzo yemuchadenga, tinosarudza, tinosarudza kureba kwe20mm ~ 100mm.

3, Chii chinonzi FOV

Mune lenzi yemaziso, kona inoumbwa nepakati peiyindiro seapex uye hupamhi hwemhando yemufananidzo wechinhu chinogona kupfuura nemu lenzi inonzi kona yekuona. Iyo yakakura iyo FOV, idiki iyo yekuona magnification. Mukutaura, kana chinangwa chisiri mukati meFOV chiedza chinoratidzwa kana kubudiswa nechinhu chacho hachizopindi mulenzi uye mufananidzo haungagadziriswi.

4、Kureba kwekutarisa&FOV

Pakureba kweiyo oblique kamera, pane zviviri zvakajairika kusanzwisisana:

1) Iyo yakareba kureba kwekutarisa, kukwirisa kureba kwendege yemadrone, uye yakakura nzvimbo iyo mufananidzo unogona kuvhara;

2) Iyo yakareba iyo yakatarisa kureba, yakakura nzvimbo yekuvhara uye yakakwirira yekushanda kwekushanda;

Chikonzero chekusanzwisisana kuviri kuri pamusoro ndechekuti kubatana pakati pefocal kureba neFOV hakuzivikanwe. Kubatana pakati pezviviri ndeichi: kurebesa kureba kwefocal, idiki FOV; kupfupika kwekureba kwefocal, ndiko kukura kweFOV.

Naizvozvo, kana hukuru hwechimiro chechimiro, chigadziriso chefuremu, uye dhizaini yedata yakafanana, shanduko yehurefu hwakatarisana inongochinja kureba kwekubhururuka, uye nzvimbo yakafukidzwa nemufananidzo haina kuchinjika.

5, Kureba kwekutarisa & Kushanda Kushanda

Mushure mekunzwisisa kubatana pakati pehurefu hwefocal neFOV, unogona kufunga kuti kureba kwefocal kureba hakuna zvazvinoita pakubhururuka kwendege.KuOrtho-photogrammetry, ichokwadi (kunyatso kutaura, kureba kwehurefu, kukwirisa kureba kwendege, simba rakawanda rinopedza, kupfupika kwekufamba kwendege uye kuderera kwekushanda kwekushanda).

Kune oblique mafoto, iyo yakareba kureba kwekutarisa, kuderera kwekushanda kwekushanda.

Iyo oblique lens yekamera inowanzoiswa pakona ye45 °, kuitira kuti ive nechokwadi chekuti iyo data yemufananidzo wemupendero facade yenzvimbo inotarirwa inounganidzwa, iyo nzira yekubhururuka inoda kuwedzerwa.

Nokuti lenzi inosungirirwa pa45 °, isosceles yekona yekona ichaumbwa. Tichifunga kuti maitiro ekubhururuka kwe drone haacherechedzwe, iyo main optical axis ye oblique lens inongotorwa kumucheto kweyeyero nzvimbo sezvinodiwa kuronga nzira, ipapo nzira ye drone inowedzera kureba EQUAL kusvika pakubhururuka kwe drone. .

Saka kana nzvimbo yekuvhara nzira isina kuchinjika, iyo chaiyo yekushanda nzvimbo yeipfupi focal kureba lens yakakura kupfuura iyo yakareba lens.