Maitiro ePhotogrammetry muMagwaro ekare
Kunyora magwaro ndeimwe yematanho akakosha mukutsvaga kwezvicherwa zvematongo. Kuwanikwa kwese—kubva pazvinhu zvidiki uye zvinhu zve stratigraphic kusvika kuzvivakwa zvekare—kwakasiyana uye kazhinji hakudzokororwi mushure mekuchera. Nokudaro, vanochera matongo vanoda nzira dzakarurama, dzakadzama, uye dzinoshanda dzekunyora. Mumakumi emakore achangopfuura, photogrammetry yakabuda senzira inotungamira yekunyora nzvimbo nezvinhu zvematongo. Nekushandisa mapikicha akatorwa kubva kumativi akasiyana, photogrammetry inogona kugadzira mamodheru chaiwo ane mativi matatu (3D), akakwana nemagadzirirwo anoonekwa. Chinyorwa chino chinokurukura pfungwa huru, matanho ebasa, mabhenefiti, uye matambudziko ephotogrammetry muzvinyorwa zvematongo.
Kunzwisisa Photogrammetry uye Mashandiro Ainoita
Photogrammetry inzira yekuyera nekugadzira mifananidzo yezvinhu zvichibva pamifananidzo. Chinangwa chayo chikuru ndechekugadzirazve maumbirwo e3D kubva mumifananidzo ye2D yakatevedzana. Software iyi inotsvaga mapoinzi akafanana mumifananidzo yakawanda (kufananidza maficha), yobva yaverenga nzvimbo dzekamera uye geometry yezvinhu uchishandisa triangulation. Mhedzisiro yacho inogona kuva makore epoinzi dense (muunganidzwa wemapoinzi dense), meshes (polygonal surfaces), uye mapoinzi epoinzi (mapoinzi epoinzi).
Munyaya yezvekuchera matongo, photogrammetry inzira isingaparadzi uye inogona kushandiswa mumunda (nzvimbo dzakashama, zvivakwa, matongo) uye murabhoritari (zvinhu zvekare, mapfupa, ivhu, zvakanyorwa). Kusanganiswa kwedata rekuona nerejometri kunoita kuti rive rinobatsira zvikuru pakuongorora nekuburitsa.
Sei Photogrammetry Yakakosha Mukuchera Matongo?
Kugadzira mifananidzo kwave kufarirwa nekuti kunogona kugutsa zvinodiwa nemagwaro ekare, izvo zvinoda kunyatsorongeka uye kushanda zvakanaka. Nzira dzekare dzekurekodha dzakadai sekudhirowa nemaoko, kuyerwa nemaoko, uye kutora mifananidzo nguva dzose dzichiri kukosha, asi dzine zvipingamupinyi: dzinotora nguva, dzakaoma kubata maumbirwo akaomarara, uye kazhinji hadzina kukwana pakuongorora nzvimbo zvakadzama.
Nekushandisa photogrammetry, vanochera matongo vanogona:
1. Nyora pasi mamiriro enzvimbo nekukurumidza usati wachera zvakadzika.
2. Inogadzira modhi ye3D inogona kuverengerwa, kuitira kuti daro, nzvimbo uye huwandu zvigone kuverengerwazve chero nguva.
3. Gadzirai zvinyorwa zvedhijitari zvechigarire, zvinobatsira pakuchengetedza nekutsvaga patsva.
4. Wedzera kujeka kwesainzi, nekuti ruzivo runogona kugoverwa kuti rwusimbiswe.
Matanho eKushandiswa kwePhotogrammetry Mumunda
Kuongororwa kwemifananidzo panzvimbo dzekuchera matongo kunowanzo tevera matanho anotevera.
1. Kuronga neKugadzirira
Vasati vatora mifananidzo, timu inofanira kuona zvinangwa: kana vachida kunyora nzvimbo yekuchera, zvinhu zvakananga (semuenzaniso, pasi, madziro, makuva), kana kuti nzvimbo yacho. Kuronga kunosanganisira kuona kukura, kupenya kunodiwa, uye mamiriro emwenje.
Zvakakoshawo kugadzirira nzvimbo dzekudzora, dzakadai seGround Control Points (GCPs) kana zviyero zvekuyera. MaGCP akayerwa neGPS yakasiyana kana chiteshi chose achavandudza kurongeka kwenzvimbo dze3D.
2. Kutora Mifananidzo (Kutora Data)
Hunhu hwemufananidzo hunoenderana zvikuru nehunhu hwemufananidzo. Mimwe yenheyo huru dze photogrammetry ndeiyi:
- Kupindirana kwakanyanya: inenge 70–80% pakati pemifananidzo.
- Makona akasiyana-siyana ekupfura: mapikicha kubva kumusoro uye kubva kudivi kuitira kuti ruzivo rwechimiro rutorerwe.
- Kutarisa nguva dzose uye kuratidzwa: dzivisa kusviba kana kuti mifananidzo yakasviba zvakanyanya/yakajeka.
– Mwenje wakasimba: mimvuri yakapinza inogona kuita kuti kuvaka patsva kuve kwakaoma; kupfura muchiedza chakaenzana kazhinji ndiko kwakanyanya kunaka.
Mumunda, makamera anogona kubatwa nemaoko, kuiswa pa tripod, kana kushandiswa nema drones munzvimbo dzakakura. Pakunyora zvinyorwa zvekuchera pamusoro, mifananidzo ye nadir (yakatarisana nepamusoro) yakajairika.
3. Kugadzirisa muSoftware
Kana mapikicha aunganidzwa, data racho rinogadziriswa uchishandisa software ye photogrammetry (semuenzaniso, Agisoft Metashape, RealityCapture, kana software yakavhurika senge Meshroom). Matanho ekugadzirisa anowanzo sanganisira:
- Gadzirisa Mifananidzo: inosarudza nzvimbo yekamera uye inogadzira gore diki rine poindi.
- Vaka Dense Cloud: inoumba muunganidzwa wemapoinzi akaomarara.
– Vaka Mesh: inovaka pamusoro pemuenzaniso.
- Kuvaka Magadzirirwo: inonamira magadzirirwo emufananidzo pamusoro.
- Kuyera/Kutarisa Georeferencing: isa chiyero kana macoordinates eGCP kuitira kuti modhi ienderane nehukuru chaihwo.
Mhedzisiro yekupedzisira inogona kutumirwa kune mamwe mafomati (OBJ, FBX, LAS/PLY, GeoTIFF orthomosaic) kuti iongororwe zvakanyanya.
4. Zvigadzirwa zveMagwaro: Orthophotos, 3D Models, uye Mepu
Photogrammetry inogadzira zvinhu zvinokosha zvikuru, zvinosanganisira:
– Orthophoto/orthomosaic: mufananidzo wepamusoro wakagadziriswa kuti ukanganise maonero uye unogona kushandiswa semepu.
- Mhando dze3D dzakagadzirwa: dzakakodzera kuratidzira uye kuongorora chimiro.
– Digital Elevation Model (DEM): muenzaniso weelevation unobatsira muzvidzidzo zve micro-topographic panzvimbo.
Chigadzirwa ichi chinogona kubatanidzwa neGIS kuti chiongororwe nzvimbo, semuenzaniso kuyera kugoverwa kwezvakawanikwa kana kunzwisisa hukama huripo pakati pezvinhu.
Photogrammetry yeZvinhu Zvakawanikwa uye Zvakawanikwa Zvidiki
Kunze kwenzvimbo, photogrammetry inonyanya kushanda pazvinhu zvidiki zvakaita sehari, zvishandiso zvematombo, zvidhori, kana zvakanyorwa. Mifananidzo inowanzotorwa munzvimbo yakadzorwa ine background isina kuvharika, mwenje unopararira, uye tafura inotenderera kuti ive nechokwadi chekuti makona akaenzana.
Chinhu chikuru chakanakira kugona kwayo kubata zvinhu zvidiki, zvakaita semavanga ekupfekwa, kushongedza, kana kuti mitswe. Mhando dze3D dzezvinhu zvakagadzirwa nemaoko zvinogona kushandiswawo ku:
- Kugadzirwazve kwezvidimbu zvedhijitari,
- Kugadzira kopi kuburikidza nekudhinda kwe3D,
– Kuratidzwa kwepamhepo pamamiziyamu.
Mabhenefiti ePhotogrammetry Kana Tichienzanisa Nedzimwe Nzira
Photogrammetry inowanzo enzaniswa ne laser scanning (LiDAR/terrestrial laser scanning). Ose anogona kugadzira 3D models, asi photogrammetry ine zvakanakira zvakawanda:
- Mari shoma, nekuti inongoda kamera nesoftware chete.
- Magadzirirwo emufananidzo anonyanya kuitika, nekuti anoshandisa mapikicha.
- Inochinjika kune zviyero zvakasiyana-siyana, kubva pazvinhu zvakagadzirwa kusvika kunzvimbo dzine madrone.
Zvisinei, laser scanning inobudirira zvikuru mumamiriro ekunze asina chiedza chakawanda uye inogona kugadzikana zvakanyanya panzvimbo dzisina magadzirirwo akawanda. Muchokwadi, mapurojekiti mazhinji ekuchera matongo anosanganisa zviviri izvi.
Matambudziko Nekuganhurirwa
Kunyange zvazvo zvichibatsira zvikuru, photogrammetry ine matambudziko anofanirwa kutarisirwa:
1. Nzvimbo dzakafanana kana dzinoratidza chiedza (semuenzaniso dombo rakakweshwa, simbi inopenya) dzakaoma kuvaka patsva nekuda kwekushaikwa kwenzvimbo dzinoonekwa.
2. Zvirimwa nezvinhu zvinofamba (vanhu vanopfuura, vachifuridza mashizha) zvinogona kuunza ruzha mumodhi.
3. Kugona kushandisa kombiyuta: kugadzirisa mapikicha ane resolution yepamusoro kunoda komputa ine RAM neGPU zvakakwana.
4. Kutarisira data: mafaira emifananidzo uye mhedzisiro yekugadzirisa inogona kunge yakakura kwazvo, zvichida sisitimu yekuchengetedza yakarongeka uye metadata.
5. Kururama kunoenderana nekudzora zviyero: pasina GCPs kana zviyero, modhi ye3D inogona "kunaka" zvinoonekwa asi isingashande pakuenzanisa kwesainzi.
Saka, mitemo yekushanda mumunda, kurekodha ma parameter ekamera, uye nzira dzekuyera kudzora zvinokurudzirwa zvikuru.
Zvinokonzera Kuchengetedza uye Kuparadzira Veruzhinji
Kugadzira mifananidzo hakungobatsiri vaongorori chete asiwo vanochengetedza zvinhu neveruzhinji. Mamodheru e3D anobvumira kutarisa kukuvara nekufamba kwenguva, semuenzaniso, pamifananidzo yetemberi yakaparadzwa. Uyezve, mhedzisiro yemifananidzo inogona kushandiswa pakudzidzisa, kushanya panzvimbo dzepamhepo, uye zvinhu zvekuratidzira zvinopindirana. Saka, kugadzira mifananidzo kunobatsira kubatanidza tsvakurudzo yedzidzo nezvinodiwa zvekuchengetedza nekutaurirana neveruzhinji.
Mhedziso
Matekiniki ePhotogrammetry ave chishandiso chakakosha muzvinyorwa zvemazuva ano zvekuchera matongo. Nekukwanisa kugadzira mamodheru e3D akarurama ane ruzivo rwakawanda, photogrammetry inovandudza kurekodha, kuongorora, uye kuchengetedza data rekuchera matongo. Kunyange zvazvo iine zvipingamupinyi—zvakadai sekudiwa kwekubatanidza zvakanyanya, kudzora zviyero, uye kugadzirisa data kwakaoma—matambudziko aya anogona kukundwa nekuronga nokungwarira uye maitiro akajairwa. Pakati pekudiwa kuri kukura kwekuchengetedza uye mukana wakakura wekuwana ruzivo, photogrammetry inopa vanochera matongo nzira itsva yekunyora zvakapfuura nekururama kwakanyanya, pachena, uye nhaka yezvinyorwa zvedhijitari zvenguva refu.
Kana muchida, ndinogona kugadzirisa chinyorwa ichi kuti chive chedzidzo yepamusoro (nemashoko akanyorwa uye bhuku remabhuku), kana kuchinja chinangwa chayo kuita drone photogrammetry, stratigraphic excavation documentation, kana museum artifact photogrammetry.
