I-Georeferencing isithombe se-GoogleEarth

Ngangikhulume ngaphambili layisha i-orthophoto ku-Google Earth uma sazi isimo sayo.

Manje ake sizame ngakwesinye isici, uma sinombono we-GoogleEarth, ungayilanda kanjani kanye nesimo salo.

Into yokuqala, ukuthi siyazi ukuthi yini enhle nokuthi kungani kungenjalo i-Google Earth, ngaphambili sesivele sikhuluma ngalokho. Nokho, into yokuqala ukuthi umbono uboniswe, futhi esikufunayo ukulanda leso sithombe kanye ne-georeference yaso. Kumelwe sivale inketho ye-terrain ukuze isibonisi se-three-dimensional singaphazamisi ukubuka kwethu, kufanele futhi siqinisekise ukuthi ikhampasi isenyakatho kanye nokubuka okuqondile.

I-1. Ukumaka indawo yenzalo

Kumelwe wenze ibhokisi ngethuluzi le-polygon ye-Google Earth, emagumbini amane esikhala ofuna ukusisika. Bese usondela ngokwanele ukuze uthole izixhumanisi ze-UTM, ubeka isikhombi ekhoneni, khumbula ukuthi ukunemba kwe-GoogleEarth kungamamitha angamashumi amathathu ngakho ungazihluphi ngamadesimali.

Manje sizokwehlisa ibhokisi, kumele sithuthele ukuze imibhalo nekhampasi zingekho ngaphakathi kwebhokisi futhi senza isikrini esiphezulu ngekhibhodi bese sikopisha ukuze sipende.

Kuleli zinga ungakwazi ukusika ngopende, ngoba ukwenza ngokunemba okwengeziwe kuwukuchitha isikhathi phakathi kokuthi umugqa obomvu ungaphakathi noma ngaphandle. Ngiyagcizelela, ukunemba kwe-GoogleEarth akufanelekile ukulwa namamitha ambalwa. Manje siyivula nge-Office Picture Manager (iza neWindows) ukuze usike imiphetho ngobunono ngenketho yokunqampuna futhi sihudule iziphetho, ngikwenza lapha ngoba ngifuna ukuthuthukisa umehluko wesithombe kancane.

Lona isithombe esiphumelelayo ngokushintsha nokugqama kokushintsha.

I-2. Ukungenisa ibhokisi ku-Microstation

Manje sesizoyikhomba nge-georeference sisebenzisa i-Microstation V8, sikopisha idatha yokuxhumanisa ibe yi-excel ngo-x,y,z oda futhi siyilondoloze ngefomethi ye-.txt ukuze z isebenzise uziro. Lokhu ukugwema ukuthayipha ngezinyawo amaphuzu nge-keyin.

Manje ku-Microstation, uma iphalethi yokungenisa idatha ye-xyz ingasebenzi, siyenza isebenze ngamathuluzi/amabhokisi wamathuluzi bese siyikhetha ekugcineni. Ngaleli thuluzi singenisa amaphuzu kusuka kufayela le-excel futhi yilokho, sesivele sinesisekelo sokwelula isithombe.

Ukuze wenze amaphuzu avele ngaphezulu, ungashintsha umbala nokuqina kwephuzu.

I-3. I-Georeferencing isithombe ku-Microstation

Manje okusele nje ukungenisa isithombe, kulokhu sisebenzisa umyalo wemenenja ye-raster, ngenketho ethi "indawo esebenzisanayo" futhi siyibeke ngaphakathi kwamaphuzu amane.

Ukuze silule, sisebenzisa umyalo we-warp, ngenketho yezinkomba ezine, futhi ukhombise ikona ngayinye yesithombe ngokumaka amaphuzu ahambisana ngawo.

Uma siwakhombisile amaphuzu amane sichofoza kwesokudla esikrinini futhi yilokho. Isithombe se-googleearth se-georeferenced. Manje kusukela lapha ungagcina lesi sithombe nganoma iyiphi ifomethi ye-georeferenced.

I-4. Ukuchotshoza ngokubaluleka kwalokhu 🙂

Ngifakazela njengeseluleko sokugcina, le nqubo ende ngiye ngayichaza ukuba ngichithe isikhathi esincane salolu hambo esivele ngikhathele. Ungasebenzisi lokhu imisebenzi embi, ngoba idatha ye-GoogleEarth ayisebenzi kulokho. Ukuze ngikubonise isibonelo, ngimboza imephu ye-cadastre.

Ukuvuselela, ukulanda izithombe ngendlela ebuhlungu kakhulu kungenziwa ngokuxhuma ngokuqondile uhlelo oluthe xaxa noma nge I-Google Maps Image Downloader