Nroog daim ntawv qhia tuaj yeem yog nyob hauv raster lossis vector daim ntawv. Cov kab ntawv raster zoo li "duab thaij duab" ntawm daim ntawv qhia. Nws tuaj yeem yog daim duab qhia tau pej xeem saum toj ib txwm los ntawm lub nroog lossis daim duab ntawm daim ntawv qhia hluav taws xob. Feem ntau, cov ntawv qhia chaw raster ua lub hauv paus rau kev tsim cov duab qhia vector. Daim duab qhia vector yog qhov tshwm sim ntawm "digitizing" raster; nws muaj cov ntaub ntawv txheej uas muaj cov khoom ntawm tib hom - npog, vaj tse, txoj kev, zaub, thiab lwm yam. Peb yuav qhia koj txog txoj cai dav dav ntawm kev tsim nroog daim phiaj.
Cov Lus Qhia
Kauj ruam 1
Muaj ntau ntau cov kev pabcuam los tsim cov duab hluav taws xob ntawm cov nroog, suav nrog cov kws tshaj lij. Tab sis cov txheej txheem ntawm kev tsim daim ntawv qhia yog ua tiav hauv lawv kwv yees tib txoj kev. Thaum pib, koj xav tau ib lub raster subframe. Nws tuaj yeem yog cov xov tooj hloov chaw ntawm cov nroog, tab sis tseem zoo dua yog tias nws yog cov duab satellite, txij li cov duab kos saum toj kawg nkaus ntawm cov nroog ntawm cov lag luam tsis tau hloov kho ntev ntev. Cov xov tooj cua zoo zoo yuav tuaj yeem coj los ntawm GoogleMaps.
Kauj ruam 2
Cov duab raster yuav tsum raug ntsuas ntsuas, i.e. "Khi" nws kom tiaj tus geodetic lossis chaw khiav haujlwm. Qhov no yuav tso cai rau koj mus txheeb xyuas qhov kev ncua deb ntawm cov ntsiab lus ntawm daim duab, cim nrog tus cursor, nrog qhov nrug deb ntawm hauv av. Kev ntsuas ntsuas tso cai rau koj los txiav txim siab linear qhov ntev nrog qhov siab ntawm qhov tseeb.
Kauj ruam 3
Los ntawm cov kab hlau scaled nws yog twb tau mus rau digitize cov khoom. Digitization, lossis vectorization, txhais tau tias yog nqus cov khoom ntawm qhov khoom raws nws cov ntsiab lus nodal. Cov khoom tuaj yeem yog ob qho tib si contour - vaj tse, tsho tiv no, chaw ntim dej, thiab kab ncaj qha - txoj kev, tsheb nqaj hlau. Tseem muaj cov khoom taw tes - memorials thiab monuments, boiler kav. Txhua yam khoom yuav tsum muaj nws txheej txheej txheej txheem.
Kauj ruam 4
Txiav txim seb cov ntaub ntawv txheej dab tsi koj xav pom ntawm koj daim duab qhia chaw. Rau cov phiaj xwm hauv nroog, cov txheej txheem tsawg kawg yuav tsum muaj me me: cov tuam tsev nrog tus lej, txoj kev nrog npe, zaub, kev tsheb nqaj hlau, dej khoom.
Kauj ruam 5
Koj yuav tsum tau digitize txhua cov ntaub ntawv txheej nyias nyob nyias. Txhawm rau hais meej cov lej ntawm lub tsev thiab cov npe kev, koj yuav tsum tau mus rau qhov chaw los yog siv lwm cov ntaub ntawv ntxiv. Los ntawm kev sib txuas txhua cov ntaub ntawv txheej, koj tuaj yeem tau txais daim duab pheeb suab ntawm lub nroog, uas tuaj yeem luam tawm ntawm cov nplai xav tau lossis ua haujlwm nrog nws hauv ntau cov phiaj xwm geoinformation.
