Ubude befocal buthinta kanjani imiphumela yemodeli ye-3D

1, Isingeniso

Ukuthatha izithombe ezitshekile, kunezigcawu ezine okunzima kakhulu ukwakha amamodeli e-3D:

Indawo ekhanyayo engakwazi ukubonisa ulwazi lwangempela lokuthungwa kwento.Isibonelo, indawo yamanzi, ingilazi, indawo enkulu yamabhilidi angaphezulu okuthungwa okukodwa.

Izinto ezihamba kancane. Isibonelo, izimoto ezimpambanweni zomgwaqo

Izigcawu lapho izici zingakwazi ukufaniswa noma izici ezifanayo zinamaphutha amakhulu, njengezihlahla nezihlahla.

Izakhiwo eziyinkimbinkimbi ezingenalutho. Okufana nama- guardrail, iziteshi eziyisisekelo, imibhoshongo, izintambo, njll.

Ezigcawini zohlobo 1 no-2, kungakhathaliseki ukuthi ungayithuthukisa kanjani ikhwalithi yedatha yoqobo, imodeli ye-3D ngeke ithuthuke noma kunjalo.

Ngohlobo lwe-3 nohlobo lwezigcawu ezi-4, ekusebenzeni kwangempela, ungathuthukisa ikhwalithi yemodeli ye-3D ngokuthuthukisa ukulungiswa, kodwa kuselula kakhulu ukuba ne-voids nezimbobo kumodeli , futhi ukusebenza kahle kwayo kuyoba phansi kakhulu.

Ngaphezu kwalezi zigcawu ezikhethekile ezingenhla, ohlelweni lokumodela lwe-3D, esikunaka kakhulu ikhwalithi yemodeli ye-3D yezakhiwo. Ngenxa yezinkinga ezihlobene nokusetha imingcele yendiza, izimo zokukhanya, imishini yokuthola idatha, isofthiwe yokufanisa ye-3D, njll., kulula futhi ukwenza isakhiwo sibonise: i-ghosting, ukudweba, ukuncibilika, ukuguqa, ukuguqulwa, ukunamathela, njll. .

Kunjalo, izinkinga ezibalulwe ngenhla zingabuye zithuthukiswe nge-3D model-modify. Kodwa-ke, uma ufuna ukwenza umsebenzi wokuguqula amamodeli amakhulu, izindleko zemali nesikhathi zizoba zikhulu kakhulu.

Imodeli ye-3D ngaphambi kokuguqulwa

Imodeli ye-3D ngemva kokuguqulwa

Njengomkhiqizi we-R & D wamakhamera e-oblique, i-Rainpoo icabanga ngokombono wokuqoqwa kwedatha:

Uyiklama kanjani ikhamera etshekile ukuze uthuthukise ngempumelelo ikhwalithi yemodeli ye-3D ngaphandle kokukhulisa ukugqagqana komzila wendiza noma inombolo yezithombe?

2, Buyini ubude bokugxila

Ubude bokugxila belensi buyipharamitha ebaluleke kakhulu.Inquma usayizi wesihloko endaweni yokuthwebula, okulingana nesikali sento nesithombe. Uma usebenzisa ikhamera emile yedijithali (DSC), inzwa ngokuyinhloko i-CCD ne-CMOS . Uma i-DSC isetshenziswa ocwaningweni lwasemoyeni, ubude bokugxila bunquma ibanga lesampula lomhlabathi (GSD).

Lapho udubula into efanayo eqondiwe ebangeni elifanayo, sebenzisa ilensi enobude bokugxila okude, isithombe sale nto sikhulu, kanti ilensi enobude obufushane bokugxila incane.

Ubude bokugxila bunquma usayizi wento esesithombeni, i-engeli yokubuka, ukujula kwenkundla kanye nombono wesithombe. Kuye ngohlelo lokusebenza, ubude bokugxila bungahluka kakhulu, busuka ku-mm ambalwa kuya kumamitha ambalwa. Ngokuvamile, ukuthwebula izithombe zasemoyeni, sikhetha, sikhetha ubude obugxile kububanzi obungu-20mm ~ 100mm.

3, Yini i-FOV

Kulensi yokubona, i-engeli eyakhiwe indawo emaphakathi yelensi njenge-apex kanye nebanga eliphakeme lesithombe sento engadlula kulensi ibizwa ngokuthi i-engeli yokubuka. Uma i-FOV ibe nkulu, iba yincane i-optical magnification. Ngokwemibandela, uma into eqondiwe ingekho ngaphakathi kwe-FOV ukukhanya okuboniswa noma okukhishwa into ngeke kungene kulensi futhi isithombe ngeke senziwa.

4, Ubude befocal&FOV

Ngobude obugxile bekhamera etshekile, kunokungaqondi kahle okubili okuvamile:

1) Uma ubude bendawo bubude, buphakama ubude bendiza yama-drones, futhi iba nkulu indawo engamboza isithombe;

2) Uma ubude bendawo bude, indawo yokumboza iba nkulu kanye nokusebenza kahle komsebenzi;

Isizathu salokhu kungezwani okubili okungenhla ukuthi ukuxhumana phakathi kobude be-focal ne-FOV akwaziwa. Ukuxhumana phakathi kwalokhu okubili yilokhu: uma ubude bendawo bude, buncane i-FOV; lapho ubude bendawo bufushane, i-FOV iba nkulu.

Ngakho-ke, uma usayizi woqobo wohlaka, ukulungiswa kohlaka, nokulungiswa kwedatha kufana, ushintsho lobude bokugxila kuzoshintsha kuphela ubude bendiza, futhi indawo embozwe isithombe ayishintshile.

5, Ubude beFocal & Ukusebenza Ngekhono

Ngemva kokuqonda ukuxhumana phakathi kobude obugxilile kanye ne-FOV, ungase ucabange ukuthi ubude bobude obugxilile abunawo umthelela ekusebenzeni kahle kwendiza.Ku-Ortho-photogrammetry, ilungile uma iqhathaniswa (uma sikhuluma ngokuqinile, uma ubude bendawo bude, buphakeme kakhulu. ukuphakama kwendiza, amandla engeziwe ewadlayo, isikhathi sendiza siba mfishane futhi sinciphisa ukusebenza kahle kokusebenza).

Ezithombeni ezitshekile, ubude bendawo bude, buyancipha ukusebenza kahle kokusebenza.

Ilensi etshekile yekhamera ivamise ukubekwa ku-engeli engu-45 °, ukuze kuqinisekiswe ukuthi idatha yesithombe sohlangothi olungaphambili lwendawo eqondisiwe iyaqoqwa, umzila wendiza udinga ukunwetshwa.

Ngenxa yokuthi ilensi iboshelwe ku-45°, kuzokwakhiwa unxantathu wesokudla we-isosceles. Uma sicabanga ukuthi isimo sokundiza kwe-drone asicatshangelwa, i-axis enkulu ye-optical lens ye-oblique lens ivele ithathwe emaphethelweni wendawo yokulinganisa njengemfuneko yokuhlela umzila, bese umzila we-drone unweba ibanga elilingana nobude bendiza ye-drone. .

Ngakho-ke uma indawo yokumboza umzila ingashintshile, indawo yokusebenza yangempela yelensi yobude bendawo emfishane inkulu kunaleyo yelensi ende.