Sezvo georeferenced orthophotos mu Google Earth

Ndakanga ndambotaura pamusoro Nzira ye georeference maps MuGoogle Earth, izvozvi tichaona maitiro atinoita zvakafanana neiyo orthophoto. Iyo inonzwisiswa neorthophoto, chifananidzo chakarongedzwa, icho chatinoziva georeferenzi yayo.

Google Earth anobvunza zvidimbu zvina mashoko, izvo dzinoenderana nzvimbo nerimwe divi orthophoto (ona mufananidzo pazasi), vakawanda vanodavira kuti hurongwa ane kumahombekombe kwokukanganisa kubvira orthophotos ane waMosesi hadzisi grid ane kumicheto uwirirane wechokwadi kuchamhembe, asi ivo vari mapazi eumambo meridians uye kufanana.
Zvisinei, hapana chikanganiso mune izvi, nokuti Google Earth inokumbira mitsara mina ye orthophoto muhupamhi nepamuganhu, kuti zvive zvakakosha kuwana dzose.

Muchiitiko ichi tichaenda kufunga kuti tinozviita mu Microstation.
Ngatitangei zvadaro nhanho nhanho:

Ziva data yemufananidzo

1. Ratidza orthophoto muMicrostation, nekuti iyo iwe unovhura faira, sarudza raster maneja / batanidza, dzima iyo nzvimbo yekudyidzana sarudzo uye bvuma.

2. Kana iwe usingaone mufananidzo, sarudza kubva kune raster maneja nebhatani rekurudyi rembeva uye shandisa sarudzo "fit raster kuona"

3. Zvino, kuziva zvinorongeka, shandisa maturusi/mabhokisi/xyztext turusi uye shandisa “label coordinates” murairo.

2. Unoda kurongeka kwepakati pemiganhu ye orthophoto, saka nzira yakanakisisa ndeyokuita mitsara yakaipoteredza, zvino sarudza "label coordinates" murairo uye chengeta papakati pepakati pemitsara.

4. Naizvozvi unotova neanoratidzira x zvishoma, x kunonyanyisa, uye kushoma, uye kuwanda.

5. Nenzira, tumira mufananidzo kune mafomu anotsigirwa neGoogle Earth, munyaya yangu iri mu. nyaya iyo Ndichatumira kune .tif fomati

Kugadzirisa mamiririri eUTM kuenda kuGiographic

Kunyangwe iwe uchigona kuvatora zvakananga nevamwe kurongwa kubva ku microstation, isu tinoratidzira iyi nhanho nguva dzose.

6.Nzvimbo yangu iri muHonduras, maordaundi angu anotevera: X = 489885.60, Y = 1579986.30 X = 493260.30, Y = 1577678.70

sezvo ndinofanira kuchinja latitudes uye longitudes, ndichaita kushandisa nzvimbo iyi sezvo shamwari yedu Gabriel Ortiz rine peji rako pasi. Mune ino saiti ini ndinosarudza iyo spheroid, mune yangu iri Clarke 1866, kozoti iyo nharaunda, iri gumi nematanhatu, yekuchamhembe hemisphere (N) uye pinda mubatanidzwa.

Sezvo Google Earth ichindibvunza iyo data mune fomati fomati, ini ndinoshandura masekondi kuenda kudesimali ndichivagovanisa nemakumi matanhatu, ipapo zvakafanana nemaminetsi uye ini ndinovawedzera. Maitiro mamwechete anoitwa nemakorokoza mana, usatenderedze nekuti mune ino fomati fomati decimal yechipiri zvinoreva chinhambwe chakakosha. Iwe unogona zvakare kuita izvi nechirongwa chakasarudzika, kune akawanda eari kunze uko, haisiyo nyaya yepositi.

Kuisa mufananidzo muGoogle Earth

7 Vhura Google Earth uye uwane zvimwe zvishoma munyika umo orthophoto ichava; Ndinofunga kuti iwe waive neGoogle Earth yakavharwa nokuti inodya zvakawanda zvezvinhu.

8. Sarudza sarudzo "wedzera mufananidzo kuvhara", iwe unotarisa mufananidzo mubrowser uye woupa zita rinobatsira kune zvinangwa zvako

9. Mune yekupedzisira tebhu repaneru iro (nzvimbo) pinda magwaro mana muzvidimbu zvidhi, chenjerera kuti usabvisa chidimbu chechidimbu.

10 Iye zvino edza kufungidzira munzvimbo, uye iwe uchaona ortho yakarongwa; Chiratidzo chakanaka ndechokuti bhokisi rine zviyero zvemufananidzo.

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Mune inotevera tichaedza kudzoreredza, tora mufananidzo kubva kuGoogle Earth uye ugadzire georefereferenzi yacho. Rombo rakanaka uye ndizivise kana ini ndikakutumira iwe isiriyo meseji :)).