cadastreMicrostation-Bentley

Hloov dluab rau vector

Rau ib txhia lub sij hawm, cov qhov tso zis Digitising ntxhuav twb luam maps lw, ces tuaj lub scanner, tab sis neeg ua hauj lwm yog tsis tsuas thov kom luam maps tab sis lwm tus neeg raug hloov dua siab tshiab rau hauv cov duab los yog PDF thiab tsis muaj lub vector hom.

Cov txheej txheem kuv yuav qhia tau tias yog siv Microstation Descartes, tab sis tib yam yuav ua tau rau lwm cov kev pab cuam: AutoDesk Raster Tsim (Ua ntej CAD Overlay), ArcScan, manifold GIS (Cov cuab yeej lag luam), Kuv nco ntsoov tias ntev ntev kuv tau ua nrog Corel Draw.

1 Daim duab

Muaj qee yam cuam tshuam mus rau hauv kev ua vectoring yam tsis muaj mob taub hau me. Ntawm cov qauv duab, png lossis tiff yuav muab cov txiaj ntsig zoo dua, thaum lub jpg yuav luag tsis yooj yim; Cov kev daws teeb meem uas nws tau xa tawm kuj tseem cuam tshuam, vim tias yog nws hloov dua siab tshiab los ntawm luam ntawv los yog luam tawm module, feem ntau nws yuav muaj kev ntsuas cuam tshuam nrog cov ntawv loj, qhov loj dua ntawm daim ntawv loj dua, qhov kev daws teeb meem zoo dua tuaj yeem xav tau los yog tsawg dua cov kev mob zoo dua li yooj yim luam tawm screen.

daim ntawv qhia luam rau vector

Cov piv txwv kuv mam li siv yog ib tug cadastral daim ntawv qhia 1: 1,000 uas tau exported los ntawm cov printing module Microstation, ib tug 24 "x36" daim ntawv tiff.

2 Lub georeference

Ib daim ntawv qhia zoo li qhov no yog ib qho yooj yim rau txoj kev siv nyiaj, vim nws muaj hauj lwm hauv cov npoo. Kuv tau kos cov ntsiab lus siv qhov kev hais kom ua "qhov chaw taw tes", Thiab nkag mus rau keyin lub koom haum hauv daim ntawv "xy = X coordinate, Y coordinate", Cov no yog cov ntsiab lus hauv xiav ntawm qhov qis duab.

Tom qab ntawd kuv tau hu cov duab siv, tso nws me ntsis sab nraum ntawm cov ntsiab lus ntawd. Tom qab ntawd kuv tau tso tib lub ntsiab lus nyob rau hauv cov xim sib txawv, sib tshuam nrog cov kab ntsuab, ib txwm siv ib qho tuab heev los ua kom lawv pom. Thiab thaum kawg siv "hloov, warp" los ntawm tus saib xyuas raster, Kuv tau thov plaub qhov chaw tswj ua haujlwm raws li pom hauv daim duab. Koj yuav tsum tam sim no muaj peev xwm vectorize rau teev.

daim ntawv qhia luam rau vector

Txawm hais tias Microstation V8i txhawb kev hu rau pdf ua ib daim duab thiab qhov no yuav tsum tau georeferenced nrog cov txheej txheem dhau los, vectorization txheej txheem tsis siv vim nws xav kom koj muaj txoj cai sau ntawv. Nws yuav tsim nyog rau ntsaws nws, thiab txuag nws li duab (txoj cai khawm, txuag tau li...).

3 Lub vectorization

daim ntawv qhia luam rau vectorKuv tabtom siv Microstation Descartes V8i. Txawm hais tias qhov no ua haujlwm zoo ib yam nrog rau cov ua ua dhau los.

Qhib Descartes cov cuab yeejdaim ntawv qhia luam rau vectorRau qhov peb ua "cov cuab yeej, raster, raster discards hloov”Thiab cov ntawv ntawd qhia qhov bar uas muaj cov cuab yeej yooj yim rau kev tsim duab.

Cia peb ua qhov kev ua si hauv 15 apple los piav qhov scribbles Yuav ua li cas:

Xaiv lub npog ncaujCov. Thawj lub cim tso cai rau koj los tsim cov npog qhov ncauj, raws li cov qauv, hauv qhov no kuv yuav siv cov xim, qhia tias kuv xav ntxiv cov txiv kab ntxwv rau lub npog ntsej muag. Koj yuav tsum txav kom ze rau hauv nruab nrab ntawm kab, thiab xaiv ib lub thawv hauv thaj chaw uas cov xim zoo li tiaj. Txhawm rau kho cov xim uas koj xav ua kom pom lub npog ntsej muag, ua nrog xaiv "xim ntsej muag dialog"Hauv kuv tsev neeg kuv tau xaiv ntsuab. Nws tseem muaj peev xwm los tsim cov tawv nqaij ntau yam thiab txuag tau lub configuration hauv .msk hom

daim ntawv qhia luam rau vector

Tam sim dab tsi xaiv nyob rau hauv lub npog ncauj hloov mus rau qhov qhia xim (ntsuab). Koj tuaj yeem ntxiv ntau xim rau tib lub npog ntsej muag, lossis rho lawv.

daim ntawv qhia luam rau vectorVectorize lub voj voogCov. Peb tab tom yuav tsim lub voj voog uas tau pom hauv tus lej ntawm cov lej, rau qhov no nws thov kom muaj lub vojvoog thiab tom qab ntawd peb tsuas yog kom kov cov kab ntawm txhua lub voj voog. Super yooj yim, Kuv siv lub magenta xim thiab tuab txaus rau cov teeb meem pom kev. Koj yuav tsum qhia kom meej txoj kab ntau tshaj plaws, qhov no yog ua los ntawm ntsuas qhov kev ncua deb uas tshaj kab ntawm txoj kab hauv duab. Rau kev tswj hwm zoo dua, nws yog qhov tsim nyog los qhia nws kom lwv cov duab vectorized.

Qhov Kev Ntsuas.  Kom tsis txhob ua ntau yam ntxiv vim yog pixelated, ib qho kev ntsuas tau raug faib. Cov piv txwv yog cov uas tsis yog ib txwm muaj, saib seb cov kab cuam tshuam li cas los ntawm pixelation.

daim ntawv qhia luam rau vector

Vectorize ib thaj tsam nrog topologyCov. Tam sim no kuv xav digitize cov ciaj ciam, yog tias kuv ua lub ntsej muag cais rau thaj tsam ntawm cov kua, nws yuav muaj qhov teeb meem uas lawv yuav tsis muaj kev tu topological hauv kev sib cais ntawm thaj chaw sab hauv. Txhawm rau ua qhov no, kuv ntxiv cov txiv kab ntxwv thiab xim dub rau lub npog ntsej muag, tom qab ntawd kov cov vectors nyias. Qhov teeb liab yog tias lawv txhua tus yuav muab tso rau hauv cov xim ntawm lub npog ntsej muag, ces tsuas yog kov tau siv cov kev xaiv "hloov cov kab"

daim ntawv qhia luam rau vector

Yooj yim, tus ntawd yog nws. Saib cov ntaub ntawv nthuav dav, tias cov nodes tau raug lees paub khaws cia topological coincidence nyob rau hauv cov kis kab, cov ntshav tuaj yeem khaws cia ua .nod hom ntawv. Koj tuaj yeem xaiv qhov hloov pauv ntawm cov xim lossis qib thaum koj xav tau, nws yog qhov kuv tau ua dhau los cais ciam ntawm qhov thaiv los ntawm cov cuab yeej txawm ua haujlwm nrog ib daim npog ntsej muag.

Hloov cov ntawv nyeem. Rau qhov no, muaj lwm yam cuab yeej uas tso cai rau koj xaiv kab rov tav, tig, muaj ntau cov ntawv nyeem, ntawm lwm tus, los ntawm kev thov OCR. Txoj cai nyob ntawd nws yog kom hloov cov roj (hlwb).

daim ntawv qhia luam rau vector

daim ntawv qhia luam rau vector Lwm cov kev xaiv vectorCov. Thaum tau siv lub npog ntsej muag, cov haujlwm uas tuaj yeem thov muaj xws li:

4 Hloov kab ib lub zuj zus
5 Hloov kom tag nrho thaj chaw nyob rau hauv ib lub thawv
6 Hloov tag nrho cov khoom txuas rau hauv daim ntawv qhia
7 Tsim cov kab contour, nws xav tau nyob rau hauv 3D noob ntawv.
8 Ua voj voog
9 Yooj yim zog vectors, qhov no yog rau txoj kab chains uas muaj ntau theem

Lub precisionCov. Kuv tau ntsuas qhov kev ncua deb ntawm pem hauv ntej ntawm cov cuab yeej naj npawb 2, thiab nws tau muab rau kuv 28.9611 meters, qhov qub yog 29.00, vectoring nws ntawm ko taw yuav tau ua qhov sib txawv, tab sis qeeb qeeb, nrog lub rooj digitizing nws yuav muaj kev phem dua. Hauv qhov tseeb no, ntau yam yuav tsum tau txiav txim siab, xws li qhov zoo
d ntawm lub luam theej duab, yog tias daim ntawv tsis muaj kev puas tsuaj, nplai ntawm daim qhia kev, qhov zoo tshaj ntawm pixelated thiab tshwj xeeb tshaj yog cov georeferencing ntawm subsection 2 ntawm no ncej.

Loj loj heev.

Yog tias koj muaj ob-xim duab, los sis yog tias koj maj, nws muaj peev xwm ua qhov vectoris loj heev, tab sis rau qhov no koj yuav tsum coj mus rau hauv tus account qee yam:

  • Yog tias daim pheem thib tsuas muaj cov ciam teb, tsuas yog thaum xeem cov ntawv xeem tiav, nws yuav ua tau raws li qhov yooj yim.
  • Yog hais tias daim ntawv qhia muaj cov ntawv, qhov zoo tagnrho yog hloov cov thawj, ces nrog cov duab tu cov cwj pwm tshem tawm cov qias neeg seem qis
  • Yog hais tias PP nyob rau hauv cov xim, nrog ib tug siv tau scan, zoo li ib daim ntawv qhia daim ntawv 1: 50,000, koj yuav ua li cas xim, thiab ua qhov ncauj qhov ntswg nrog pab npe (contour kab, vaj tse, txoj kev, daim phiaj, thiab lwm yam) nyob rau hauv thiaj li thov nws kom niaj hnub zoo li txawv dluab. 
  • Thaum twg koj muaj daim ntaw tas li, nws yog qhov zoo tshaj yog hu rau lawv ob leeg, ua kom tau txais kev hloov los ntawm koom thiab vectoring muaj cov nplooj ntawv xaiv tau ntau.
  • Nws yog ib qho tsim nyog ua tom qab kev saib xyuas, tshwj xeeb tshaj yog nyob rau hauv cov pob qij txha thiab cov chaw sib ze ntawm cov kab.

Golgi Alvarez

Tus kws sau ntawv, kws tshawb fawb, tus kws tshaj lij hauv Kev Tswj Xyuas Cov Qauv. Nws tau koom nrog hauv kev xav thiab kev siv cov qauv xws li: National System of Property Administration SINAP hauv Honduras, Qauv ntawm Kev Tswj Xyuas Kev Sib Koom Tes Hauv Honduras, Kev Sib Koom Ua Qauv ntawm Cadastre Management - Registry hauv Nicaragua, Kev Tswj Xyuas Kev Tswj Xyuas Thaj Chaw SAT hauv Colombia . Editor ntawm Geofumadas kev paub blog txij li xyoo 2007 thiab tus tsim ntawm AulaAGEO Academy uas suav nrog ntau dua 100 cov kev kawm ntawm GIS - CAD - BIM - Digital Twins cov ncauj lus.

lwm yam khoom

ib Comment

  1. Kuv xav tias nws yog qhov zoo rau kuv mus ua haujlwm nrog 8.5 vim tias nws tseem ceeb heev.

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