Etsa setšoantšo sa mohaho oa digital (MDT / DTM) ka Microstation 'me u tšoanele li-orthophoto

Nakong e fetileng re ne re bona kamoo MDT e entsoeng kateng, le li-contours ka AutoCAD ho hlahisa melahare ea lithako.

Lenaneo le loketseng la ho etsa sena ke GeoPack, e tsoang Microstation e lekanang le Civil3D ho tsoa AutoDesk, e ka etsoa hape ka Descartes, e lekanang le AutoCAD Raster Design. Ka mananeo ana mokhoabo oa mehato oa bolokoa empa maemong ana re tla etsa joalo feela ka Microstation V8.

1. Mohloli faele

Re tla sebelisa faele e se e ntse e e-na le lesela la lintlha ka litekanyo tse tharo, tse bitsoang 220_Points.dgn, re ne re kile ra bua ka hore na o ka kenya joang ka maqephe a xyz ho tloha lebokoseng Excel ho Microstation. Re tsamaea le ho bula "Lintlha” e le mohlala o sebetsang.

2. Ho hlahisa mohlala oa sebaka

• Re bōpile sebaka se secha se bitsoang DTM
• Khetha 'mala le mofuta oa mola
• Re etsa boemo bo sebetsang
• Re khetha lintlha tsohle ebe re thaepa bareng ea taelo ea mongolo (lisebelisoa / key-in) "mdl load facet;", ntle le mantsoe a qotsitsoeng
• Ebe ka lebokoseng le latelang re khetha tabo Lintlha tsa XY ebe o kenya tshebetsong"Atolosa ho Rectangle”, ho tšoaea terata moo re batlang hore tsamaiso e be ea triangulate mohlala oa naha

• Joale re tobetsa konopo "Lintlha tsa Triangle XY”

• Ntho e 'ngoe ke ho sebelisa motsoako ona oa ho kenya lebokose: mdl load facet;. Sena se tla hlahisa liphetho tse tšoanang, ho tlosa tlhokahalo ea ho bula mabokose a puisano. Ho hlakile hore kenyelletso ena ea keyboard e tla sebelisa boemo ba hajoale (ho tima / ho tima) ba "Atolosa ho Rectangle”.
• Nakong ea ts'ebetso ea moloko, MicroStation e tla boela e bule fensetere ea eona e nyenyane ea temana 'me e bontše tse tharo tse etelletsoeng pele ke mangolo a latelang:
  V - Palo ea lintlheng ka ntlha e hlahisoang.
  F - Palo ea lifahleho kapa tse tharo ka karolo e hlahisoang.
  C - Palo ea lihlahisoa tsa mesh tse kopanetsoeng. Bakeng sa ts'ebetso ea triangulation, bohlokoa bona bo lokela ho ba 1 kamehla.

3. Ho hlophisa Leseli ho Fana ka Litefiso

Re tla etsa phetolelo ea sebaka, pele u beha li-orthophoto.
E le hore re fumane phetolelo e molemo ea mohlala ona, re tla qala ho lokisa khanya e akaretsang.

• Re khetha "Lisebelisoa / Pono / Phepelo / Mabone a Lefatše Lohle” 'me ka lebokoseng la lebokose la lebokose le reng re fetola melao ea boitšoaro e le hore e bapane le graph e latelang.

• Ho fana ka bokaholimo, ho tsoa lebokoseng la lithulusi le tšoanang, khetha "Fana ka” 'me u fetole litekanyetso tse latelang:
  Sepheo = View, Mokhoa oa ho fana = Smooth, le Shading Type = Normal.
  Kenya ntlha ka pono ea isometric 'me u khahloe ke liphetho tsa hau.

4 Ho lata setšoantšo sa raster ho microstation

• Ho tsoa ho Motsamaisi oa Raster, khetha "Faele / Eketsa" ebe o khetha "220_Image.jpg”. Setšoantšo sena ke georeferenced, kahoo etsa bonnete ba hore ha u khethe "Beha ka kopanelo” ea "link" lebokose la puisano.

Re fumana lintlha tse latelang tsa thepa ea setšoantšo:

• Re khutlela ho litlhophiso tsa litšupiso ka Raster Manager. Re ea ho tab "Sebaka” 'me u bone lintlha tse latelang:
• litekanyo - Ena ke boholo bo boholo ba setšoantšo seo setšoantšo se nang le sona, 5,286 limithara ka bophara le 5,228 limithara tse phahameng.
• Pixel Size (Pixel Size) - Ena ke boholo ba pixel, ka lihlopha tse kholo. Setšoantšo sa rona se na le boholo ba pixel ea limithara tsa 1.
• Origin (Mohloli) - Lena ke sebaka sa XY sekhutlong se ka tlaase sa setšoantšo. Kahoo kona e ka tlase e letšehali ea setšoantšo e kenngoa XY = 378864.5, 5993712.5

5. Ho theha boitsebiso bo thehiloeng ho Aerial photography (Ortofoto)

Morero oa ho bōpa thepa o tsofetse ho Microstation, joaloka mohlala ho etsa pontšo; tabeng ena re tla e sebelisa ho etsa hore e shebahala joaloka lintlha tseo re tla li sebelisa ho fana ka li-orthophoto joaloka litšoantšo tse ling ka mokhoa oa mohlokomeli.

• Ho tsoa lebokoseng la lisebelisoa "RenderingTools”, re khetha"Hlalosa Lisebelisoa”.
• Ha o fihlella lebokoseng lena ka lekhetlo la pele, MicroStation e tla lula ka lehlakoreng le letšehali ka keno e lekanang le lebitso la faele. Kena ho kena qalong ea tafoleng ea lintho tse bonahalang (tafoleng ea marulelo) e leng file e nang le katoloso .mat. Tafole ea lintho tse bonahalang e boloka likabelo tsa thepa linthong tse fapaneng tse fapaneng le tse nang le 'mala o itseng.

• Ho tswa ho menu bar, khetha "Palete > Ncha”
  MicroStation e araba ka ho eketsa "Palete e Ncha (1)" tlase tafoleng ea thepa.
• Re reha sena hape e le "PhotoDrape” khetha "Palette / Boloka Joalo, kapa ka ho letona ka ho le letona le ho khetha 'Boloka joalo ea lenane.
  Ka ho etsa sena, MicroStation e hlahisa fense e nyenyane, e nang le katoloso .pal.

 
• Ho theha thepa re kenya konopo "Boitsebiso bo bocha” 'me re reha lebitso" Lintho tse Ncha (1)” joalo ka "Aerial"
• Ho abela foto ea moeeng joalo ka ntho e bonahalang, tobetsa letšoao le lenyenyane le totobalitsoeng setšoantšong se ka tlase ebe u khetha "120_Image.jpg”.

 

 

• Hona joale re sebelisa lintlha tseo re neng re li fumane pele ho setšoantšo:
• "Mapa" ho "phahamiso
  X Size = 5286 'me Y Size = 5228
  Offset X = 378864.5 'me Offset Y = 5998940.5

• Re koala lebokose la "pattern" ebe re boloka liphetoho ka ho tobetsa "Boloka ” ka lebokoseng la puisano la "Material Editor".

6. Ho ea ho Aerial Photography (orthophoto) ho ea DTM e fana ka eona

 
• Re koala lebokose la "Material Editor" ebe u khetha "Sebelisa Boitsebiso” ho tsoa lebokoseng la lithulusi”Lisebelisoa tsa ho Fana”.
• Re ile ra hlahloba hore re na le palette e nepahetseng le boitsebiso bo khethiloeng joalokaha ho bontšitsoe chate e latelang.

 

• Re tobetsa "Abela ho ea ka Boemo/Mmala” 'me u khethe karolo ea mesh e emelang sebaka.
• Ho tsoa lebokoseng la lisebelisoa "Sesebelisoa sa ho Fana”, re khetha sesebelisoa "Fana ka” 'me u fetole litekanyetso tse latelang:
  Sepheo = View, Mokhoa oa ho fana = Smooth, le Shading Type = Normal.
• Hona joale re etsa hore pono ea isometric e sebetse 'me ke sona seo.

Bakeng sa poso ena re sebelisitse mokhoa o bontšitsoeng ke Jorge Ramis leqepheng la khale la Geocities e lokelang ho pholosa hobane ka letsatsi le leng Yahoo ena e nyamela tšebeletso ena, ena e fetoletsoe ho tloha Askinga.

Liphetolelo tsa morao-rao tsa Microstation li na le tshebetso ho etsa sena le litšoantšo tsa Google Earth le Bentley li na le likōpo tse nang le bokhoni bo khethehileng bakeng sa ho sebetsana le mehlala ea libaka tsa digital.