Indlela yokwenza i-georeference ibalazwe elithwetshiwe

Esikhathini esidlule sakhuluma ngendlela yokwenza le nqubo usebenzisa i-Microstation, futhi nakuba kwakuyisithombe esinciphile se-Google Earth, sisebenza ngokulingana nemephu eneziqondiso ezicacisiwe ze-UTM.

Manje ake sibone ukuthi singakwenza kanjani inqubo efanayo ngokusebenzisa ezininginingi.

1. Ukuthola i-Control Point Coordinates

Okungenani amaphuzu amane kumephu anezixhumanisi ezaziwayo ayadingeka ... qaphela, futhi nokuqagela okungase kube njalo I-NAD27, i-WGS84 noma okunye. Ngokuvamile lezi zixhumanisi zisemakhoneni njengesithombe esingezansi.

Endabeni yemephu engenazo izixhumanisi, lezi zingathathwa ziye ensimini nge-GPS, kusetshenziswe amaphuzu abonakala kahle. Kulokhu ngisebenzise isisekelo seThales Mobile Mapper nesinye ukuthola amaphuzu, lapho-ke ngenze ukulungiswa okuhlukile ngeHhovisi le-Mobile Mapper, ngakho-ke ukunemba kwamaphoyinti kuyi-submetric.

Uma sesitholile idatha, siyifaka efayeleni elihle kakhulu, enekholomu emibili, eyodwa yezingxube x (ubude) kanti enye enye yezixhumanisi y (ama-latitudes)

Ukungenisa isithombe ku-Manifold de usa ifayela / ukungenisa / ukudweba futhi sikhetha isithombe esithwetshiwe.
2. Ngenisa Amaphoyinti Wokulawula Kwisistimu Ebonakalayo

Kusuka ku-Manifold sikhethiwe ifayela / ukungenisa / ukudweba futhi sikhetha ukukhetha kwamafayela we-xls, bese sithola ifayela.
Ibhokisi lengxoxo livela, kufanele ukhethe amakholomu aqukethe idatha yentshisekelo.

Amakholomu: gcina isheke kumakholomu X 'no-Y', kwezinye zisuse isheke.

X / Longitude: X '

Y / Latitude: Y '

Manje cindezela Vula, futhi ngokuzenzakalelayo ithebula lingeniswa efayeleni le-manifod.

I-3. Nika ukubonakala kwedatha engenisiwe

Ewindini leProjekthi sichofoza inkinobho yangempela kumdwebo omusha ongenisiwe (uphela ngo *Ikhomba umdwebo) futhi kwimenyu enwetshiwe ukhethe uku-Projection. Lungiselela uhlelo lokuxhumanisa kuleli cala sizosebenzisa indawo ye-UTM 16N, ne-datum WGS84.

I-4. Ukudala amaphuzu wokulawula.

Finyelela kwimenyu "Amathuluzi / Yenza ngokwezifiso" futhi ibhokisi lengxoxo iboniswa lapho sikhetha ibhokisi elihambelana nalo Amaphoyinti Wokulawula bese vala.

Ngakwesokudla kweskrini ibhokisi Amaphoyinti Wokulawula, chofoza okulodwa kuthebhu I-Point Control entsha, futhi sithola iphuzu ngalinye lokulawula ngosizo lwe-Snap kuya Kumaphoyinti, lokhu esimweni sebalazwe esinazimboni zethu.

Endabeni yebalazwe esiye sithatha amaphuzu nge-GPS, singenisa ifayela le-DXF ngenketho Ifayela / ukungenisa / ukudweba bese sikhetha amafayela wesigaba dxf. Konke okunye kuyafana nesinyathelo esedlule, ngaso sonke isikhathi kunikezwa ukuqagela ngezinyathelo zephoyinti 3.

I-5. Georeferencing isithombe esithwetshiwe

Ukungenisa isithombe sikhetha ifayela / ukungenisa / ukudweba ukhetha inketho yamafayela we-jpg, noma ifomethi isithombe sethu esinayo. Ngemuva kwalokho sengeza ukubonakala ngokulandela izinyathelo ephuzwini 3.
Manje sivula isithombe ngokuchofoza kabili kuso, bese ukhetha ithuluzi I-Point Control entsha, ukumaka iphuzu ngalinye endaweni efanayo yamaphoyinti aboniswe ngenhla, kanye ncamashi nomyalelo ofanayo abelwe kuwo emephini.

Manje ebhokisini Lokulawula Amaphoyinti esikukhethayo Register, y ebhokisini elibonisiwe siqinisekisa imingcele elandelayo:

• Izikhombo: UMoseki
• Indlela: I-Affine (isilinganiso, shintshela, shintsha) bese sicindezela OK
  
  Ukugcina isithombe ngefomethi ye-georeferenced, kufanele uchofoze kuso ngqo, bese uthumela ngaphandle. Ingagcinwa ngefomethi ye-.ecw engasindi kangako.

Yiqiniso, indlela engcono kakhulu yokwenza i-google image Earth Earth (noma i-Virtual Earth, noma i-Yahoo amamephu) ngokuningi ubambe ngqo inkonzo yezithombe ... futhi uzisindisa kuyo yonke le mpi.