Kamar yadda georeferenced orthophotos a Google Earth

Ya rigaya ya yi magana game yadda za a tsara taswirar georeference A cikin Google Earth, yanzu za mu ga yadda muke yin daidai tare da orthophoto. An gane shi ta hanyar orthophoto, hoto mai gyaran ortho wanda muka san yanayin sa.

Google Earth yana buƙatar bayanai hudu, wanda ya dace da cibiyoyi a kowane bangare na rubutun (duba siffar ƙasa), mutane da yawa sun gaskata cewa tsarin yana da ɓangaren kuskuren tun lokacin da rubutun ƙwayoyin mosaic ba grid ba ne wanda gefuna ya dace da gaskiya arewacin, maimakon haka sun kasance ƙungiyoyi masu kama da juna.
Duk da haka, babu kuskure a cikin wannan, saboda Google Earth yana buƙatar waɗannan ƙa'idodi huɗu na rubutun a cikin latitude da tsawo, don haka zai zama dole don samun duk hudu.

A wannan yanayin zamu ɗauka cewa munyi shi a Microstation.
Bari mu tafi mataki-mataki sa'an nan:

georeferenciation-images-microstation.JPG

San bayani game da hoton

1 Nuna orthophoto a Microstation, don wannan ka buɗe fayil, zaɓi mai sarrafa fyaɗe / haɗe, hana zaɓin wurin ma'amala da karɓa.

2 Idan baku ganin hoton ba, zaɓi shi daga mai sarrafawa tare da maɓallin linzamin kwamfuta na dama kuma kunna zaɓi «Fit raster don duba»

3. Yanzu, don sanin haɗin gwiwar, kunna kayayyakin aikin kayan aiki / kayan aiki / xyztext kuma amfani da umarnin "lakabin lakabi"

2 Kuna buƙatar daidaitawar wuraren tsakiyar cibiyar iyakokin orthophoto, don haka hanya mafi kyau ita ce yin layin da ke kusa da shi, yanzu zaɓi umarnin "masu daidaita lamuni" kuma danna maɓallin tsakiyar layin.

4 Tare da wannan kun riga kun sami daidaitawa x ƙaran, x iyakar, da ƙarami, da matsakaici.

5 Af, fitar da hoton zuwa nau'ikan da Google Earth ke goyan baya, a cikin maganata yana cikin .ecw, don wannan kawai a cikin mai sarrafa raster ka zaɓi hoton tare da maɓallin linzamin kwamfuta na dama ka zaɓi «ajiyewa kamar yadda», a wannan yanayin zan fitar da shi zuwa .tif tsari

Ana canza haɗin UTM zuwa Geographic

Ko da yake za ka iya samun su kai tsaye tare da wasu saituna Daga microstation, koyaushe zamuyi misali da wannan matakin.

6 Matsayina a cikin Honduras, masu daidaitawa kamar haka: X = 489885.60, Y = 1579986.30 X = 493260.30, Y = 1577678.70

Kamar yadda nake buƙatar canza su zuwa latitudes da kuma dogon lokaci, zan yi amfani da wannan shafin tun lokacin aboki Gabriel Ortiz Shafinku yana ƙasa. A cikin wannan rukunin yanar gizon na zaɓi spheroid, a cikin maganata shine Clarke 1866, sannan yanki, wanda shine 16, arewacin hemisphere (N) kuma na shiga cikin daidaitawa.
hadewa-maida-utm.JPG

Tunda Google Earth tana tambayata a cikin tsari na tsari, sai na juyar da sakanni zuwa na decim ta hanyar raba su sittin, sannan daidai tare da mintuna da jimloli. Haka aka yi su tare da daidaitawa guda hudu, kada a zagaye domin a cikin wannan tsarin tsararren adadin na karo na biyu yana nufin ma'anar nesa. Hakanan zaka iya yin wannan tare da shirin musamman, na waɗanda akwai su da yawa a can, ba batun post ɗin bane.

Ana shigo da hoton zuwa Google Earth

7. Bude Google Earth kuma gano wuri ko žasa a cikin ƙasar inda rubutun za su kasance; Ina tsammanin kuna da Google Earth rufe domin yana cin wadata albarkatu.

8 Zaɓi zaɓi «Ƙara murfin hoto«, Ka nema hotunan a cikin mai bincike sannan ka ba shi suna mai amfani don dalilanka

9 A saman shafin na wancan kwamitin (location) shigar da jagororin hudu a cikin digiri na nakasassu, kula kada ku share alamar digiri.

10. Yanzu ƙoƙarin zuƙowa a cikin yankin, kuma za ku ga kotho mai tsarawa; Alamar kirki ita ce akwatin yana da siffar hoton.

11. A cikin lokaci, a sama da shafuka a cikin wannan rukunin za ka iya zaɓar zabi mai gaskiya, to, zaɓin "karɓa" kuma an yi.

georefimagenes.JPG

A na gaba za mu sake gwadawa ta wannan hanyar, zazzage hoto daga Google Earth kuma ƙirƙirar yanayin ƙasa. Fatan alheri kuma bari in san idan na turo maka da sakon ingantaccen tsari :)).

5 tana nunawa ga "Ta yaya za a raba rubutun kalmomi a Google Earth"

  1. mai kyau ga kowa
    Na zama sabon zuwa wannan, amma ina da shakkar cewa ɓangaren ɓata na da abubuwan da aka samo daga google duniya zuwa ga rundunar 3d

  2. Barka da yamma ... Ina tsammanin wannan taron yana da kyau. na gode zan jira wasu tambayoyi ..attm

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