LiDAR vs Photogrammetry: Yibuphi Ubuchwepheshe Obungcono Kakhulu Kwezindawo?
Uma uhlola indawo enamahlathi nge-drone ye-photogrammetry kanye ne-drone ene-LiDAR, uzothola amamodeli amabili omhlaba ahluke ngokuphelele. I-photogrammetry ibona iziqongo zezihlahla kuphela, kanti imishayo ye-laser ye-LiDAR ingena ezikhaleni zamaqabunga ukuze ihlole umhlabathi wangempela ngaphansi. Lo mehluko unquma ubuchwepheshe obudingwa iphrojekthi yakho.
Kokubili i-LiDAR ne-photogrammetry kukhiqiza amamodeli omhlaba e-3D kusuka kudatha yasemoyeni, kodwa indlela okuqoqa ngayo idatha ihluke kakhulu. I-photogrammetry yakha imodeli ye-3D kusuka ezithombeni ezihlanganyelwe. I-LiDAR idubula imishayo ye-laser futhi ikale isikhathi sokubuya kwayo ukuze inikeze ukuphakama komhlabathi okuqondile.
Buka Ukungena Phansi Kwezihlahla Bukhoma
LiDAR vs Photogrammetry Ngaphansi Kwezihlahla
Qhathanisa Ubuningi be-Point Cloud
Umehluko Kwenani Lama-Point Cloud
Thola Ibhalansi Phakathi Kwezindleko Nokunemba
Izindleko vs Ukunemba Kwephrojekthi
Ithebula Lokuqhathanisa Eliphelele
| Isici | Photogrammetry | LiDAR |
|---|---|---|
| Ukungena ezihlahleni | Cha, ithatha kuphela ingaphezulu elibonakalayo | Yebo, imishayo ye-laser ifinyelela phansi |
| Izinga lezindleko | Ishibhile (₹500-1,500/acre) | Iphindaphindwe ka-2 kuya ku-3 kunefotogrametri |
| Indawo engcono | Izindawo ezivulekile ezingenawo amahlathi | Amahlathi amakhulu, izihlahla eziwugqinsi nezintaba |
| Idatha ephumayo | Ibalazwe le-Orthomosaic + DTM | I-point cloud eminyene enokuhlukaniswa komhlabathi |
Ezindaweni ezivulekile ezinotshani obuncane, i-photogrammetry inikeza ukunemba okufanayo ngezindleko eziphansi kakhulu. Gcina i-LiDAR ezindaweni ezinamahlathi lapho amakhamera ejwayelekile engakwazi ukubona umhlabathi phansi.
I-photogrammetry ithatha isithombe salokho okubonakalayo. I-LiDAR ikala ngokunembile lokho okukhona ngempela, ngisho noma kufihlekile.
Ukukhetha Ubuchwepheshe Obufanele
Khetha ubuchwepheshe ngokuya ngesimo somhlaba hhayi nje ibhajethi kuphela. Ithimba lethu le- drone survey lihlola ukuminyana kwezihlahla ngaphambi kokuncoma, kanti yonke imibiko ye- LiDAR scan ifaka idatha yomhlabathi ehlukaniswe kahle.
Awunasiqiniseko sokuthi indawo yakho idinga i-LiDAR?
Yabelana nathi ngohlobo lomhlaba nesimo sezihlahla, sizokuncoma ubuchwepheshe obungcono kakhulu.
Imibuzo Evame Ukubuzwa
I-LiDAR isebenzisa imishayo ye-laser engena phakathi kwezihlahla ukuze ikale umhlaba, kanti i-photogrammetry ithembele ezithombeni.
Cha. Ezindaweni ezivulekile, i-photogrammetry inikeza imiphumela efanayo ngezindleko eziphansi kakhulu.
Izinsimbi ze-LiDAR ziyabiza kakhulu, zikhiqiza idatha enkulu kakhulu futhi zidinga isofthiwe ekhethekile yokuhlaziya.
Cha. I-photogrammetry ithembele ekukhanyeni okubonakalayo ngakho ayikwazi ukubona umhlabathi ngaphansi kwezihlahla.
I-LiDAR ikhiqiza idatha eminyene kakhulu futhi elinganayo ezindaweni ezinamahlathi.
Yebo, njengoba i-LiDAR ikhipha ukukhanya kwayo kwe-laser, isebenza kahle ngisho nasebumnyameni obuphelele.
Izindawo ezinamahlathi amakhulu, imithambeka enezihlahla eziningi nezindawo ezinamawa.
I-photogrammetry izobonisa phezulu kwezihlahla kuphela. Ukuze uthole umhlabathi wangempela (DTM), kudingeka i-LiDAR.
Yebo, amaphuzu e-GCP akalwe nge-DGPS ayadingeka ukuze kuqinisekiswe ukunemba kocwaningo.
I-photogrammetry ivamise ukucutshungulwa ngokushesha ngoba usayizi wayo wefayela mncane uma uqhathaniswa ne-LiDAR.
Lolu cingo luqondiswe kuphela emisebenzini yamaphrojekthi. Sicela ungathinti mayelana nokuqeqeshwa noma imisebenzi.