Sauke taswirar titi daga Google Earth

A iliminmu, babu wani shiri (duk da haka) wanda zai iya sauke titunan Google Earth a cikin yanayin vector. Kodayake zaku iya daga Taswirar Open Street, amma kash babu su daga dukkan biranen.

Amma idan wani yana sha'awar titunan Google Earth, to hanyar fita ita ce zazzage su a matsayin hoto, sannan kuma suyi kama da dabba a kansu. Anan akwai wasu nasihu don rage matakin dabbanci:

1. Sanya siffar baƙar fata

Muna yin wannan, don kada hoton tauraron ɗan adam ya tsoma baki kuma ya inganta ganiyar tituna. Ana yin hoton bmp baki a Mspaint kuma ana kiran sa daga Google Earth, yana shimfida shi akan yankin da yake sha'awa.

2. Sauke hoto tare da Stitchmaps

Yanzu, ta yin amfani da Stitchmaps, mun zaɓi wani abin da ya dace da mu don ganin matakan kauri da ƙasa da ƙananan titi.

Duba yadda, ko da yake Google Earth ba ta ga duk tituna a tsawo na hoton ba, Stitchmaps duka ne, za mu zaɓi ƙananan tayi, a wannan yanayin 384 mita.

Da zarar an bayyana mosaic, za mu ba da umarnin zazzagewa, kuma mu jira mosaic ya daidaita. a ƙarshe mun adana shi tare da tiff format, kuma tare da fayil din kifi na OziExplorer (.map). Hoton yana kama da wannan: hoton da ke hannun dama yana faɗaɗawa:

A matsayin iyaye, idan muna son canza shi zuwa .ecw, a Mapping Global mun kawo shi, sanya shi tsinkaye kuma mu gaya masa ya gyara shi daga fayil .map. Sannan ana iya fitar dashi zuwa .ecw don kyakkyawan sarrafawa daga wani shirin.

3. Yi nazari tare da shirin makirci

Zana layi na iya zama rabi mai zurfi, idan kana son motsawa cikin sauri, zaka iya amfani da shirin fassarar atomatik, kamar Microstation Descartes.

An fahimci cewa hoton .ecw yana da georeferenced, (ko da yake ana iya aikatawa daga Descartes), abin da yazo shine canza hoton zuwa vector, tare da irin aikin da muke nunawa a cikin wani akwati na baya.

Ana yin abin rufe fuska don sautunan rawaya, da wani don sautunan launin toka sannan kuma muna gaya masa don canza su zuwa vector tare da tsabtace yanayin yanayi. Bangaren da rubutun yake, ba za a ƙirƙiri vector ba, dole ne muyi haɗin gwiwa da ƙafa, kodayake idan kuna son cin gajiyar Descartes, akwai yiwuwar ya canza waɗancan sautunan rubutun zuwa launin toka na titi, shi ya sa mun sanya shi karami Idan rubutu zai zama vectorized, yi amfani da umarni don daidaitaccen rubutu.

4. Idan ba'a da Microstation Descartes ba

Haka kuma ya kamata ya yi kama da AutoDesk Raster Design, ArcScan, da yawa GIS, har ma Corel Trace.