Google ntiaj teb yuav txhim kho koj cov DTM thiab ntau dua ...

Google pib kev sib tw hauv kev tshawb nrhiav ntau cov ntaub ntawv, orthophotos, cov qauv av, digital, 3D qauv ntawm cov tuam tsev ... qhov no tuaj yeem hloov lub tswvyim uas Google Earth cov ntaub ntawv Lawv tsis muaj txiaj ntsig rau kev ua haujlwm hnyav.

Qhov tseeb tias Google nyob tom qab cov ntaub ntawv no yog vim tsis yog kev sib tw nrog Virtual Eath, tab sis hais tias cov ntaub ntawv muaj peev xwm muab ntau dua qhov tseeb rau cov ntaub ntawv uas twb muaj lawm thiab ntau dua cov kev pab ... peb xav tias, thiab txij li thaum peb kwv yees;

Dab tsi hauv Google Earth nrhiav thiab rau lub hom phiaj dab tsi?

1. Cov qauv kab qauv (DTM lossis MDT)

Txawm li cas los peb hu nws, peb paub tias qhov tau hais tias digital struts cov qauv nrog cov chaw hauv cheeb tsam tuaj yeem coj qhov muaj txiaj ntsig ntawm Google Earth mus rau lub hom phiaj tsis txaus siab, suav nrog kev txhim kho nyob rau hauv meej meej ntawm orthophotos lossis satellite duab yog tias nws tuaj yeem txuas nrog rau ob peb tswj cov ntsiab lus uas tam sim no Google qauv tuaj yeem muaj.

Rau qhov no, Google nug tias koj sau ib daim ntawv uas koj qhia seb hom duab twg nrog lub peev xwm los khaws cov ntaub ntawv hauv av koj muaj. Qhia txog qee cov qauv siv nrov, suav nrog: Gtiff, tif, aig (ArcInfo Binary Grid), asc (ArcInfo ASCII Grid), img (Erdas Xav txog Duab), ddf (SDTS Raster), dem (USGS ASCII Dem)

Nws tseem thov kom muaj lub pixel loj, kev pom zoo thiab Datum.

2 Satellite dluab thiab Orthophotos

MMM, qhov no tau txais nthuav ntau dua, vim tias Google xav ua kom tiav nws cov kev tiv thaiv nrog cov duab tsis yog tsuas yog sub-meter daws teeb meem tab sis ntawm ntau dua meej. Rau qhov no, nws nug rau tib lub pixel loj, xim, kwv yees thiab Datum, ntxiv rau cov qauv duab uas nws tau hais txog: GeoTIFF, JPEG2000, TIFF nrog worldfile (tfw), MrSID, tsis txawv nws tsis hais ecw.

3. 3D cov ntaub ntawv ntawm cov tuam tsev

Cov no tuaj yeem ua hom .shp, .csv lossis .kmz yog tias muaj kev hloov chaw ntawm ru tsev nrog nce nrog. Kev ua 3D lub tsev qauv, cov qauv tawm mus rau .dae (collada), .3ds, thiab .max thiab lawv ua qhov sib cais yog muaj nrog lossis tsis muaj tus qauv.

Qhov phem tshaj plaws txog Google yog tias tsis muaj dab tsi xav them, tab sis nws muab peb ntau ntawm nws cov kev pab dawb, nyob rau hauv rooj plaub no nws nug:

Koj puas muaj orthophotos uas koj xav qhia? Qhia peb tias qhov twg koj muaj thiab peb qhia koj thaum koj tuaj yeem tso lawv ... thaum peb khwv nyiaj nrog lawv thiab peb yuav muab ob peb xees rov qab rau hauv AdSense clicks !!!

Txawm hais tias nws hais txog qee qhov zoo uas yuav muaj nyob yog tias tib neeg faib lawv cov ntaub ntawv, nws zoo li tias txhua yam nyob hauv qab qhov chaw Sketchup! thiab tias 350 lab ntawm Google ntiaj teb cov neeg siv xaus rau hauv kev hlub / ntxub kev sib raug zoo ... tsawg kawg ntawm daim vis dis aus zoo saib.