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Hng dn chi tit ly nh t Google Earth chuyn v h ta VN2000.
- Lu ri ln mng ton i download ti liu sn c hc, nay rnh ri lm mt
ti liu, ch
ny tuy c nhng y cng l hng dn chi tit, mong mun gi ti
www.svquanlydat.com vi
mc ch chia s vi cc bn sinh vin c thm ti liu nghin cu.
- V kin thc cn hn hp, t hc t cc ngun v ch dn t cc bc tin bi,
mong mun cc
Pro c kinh nghim hng dn v chia s thm ti liu c chnh xc v phong
ph. Chn
thnh cm n!
Bc 1: Cc bc ci t phn mn ly nh v tinh l : Universal Maps
Downloader (Ci ny
nn thng chnh xc cao) hoc StitchMaps.v2.4 (Ly nh mi nht do Google
upload ln
GE m cha down c bng phn mm Universal Maps Downloader).
Bc 2: Cc bc tip tc ci t phn mn chuyn v s l nh down v: em dng
Global
Mapper 14. Cc phn mn trn cc bc ln google tm nh. Em khng c upload
ln trang ring.
Bc 3: Tin hnh ly nh v tinh t G.E
- Vo Web: http://maps.google.com/
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+ Chuyn qua ch xem nh v tinh, ti ni cn ly nh: y ti ly Ng 6 ca
TP.Bun
Ma Thut.
+ Click chut phi , la y l g ly ta :
- Bt phn mn Universal Maps Downloader v lm theo hng dn:
Task name: Tn qu trnh ang thc hin
Maps type: Chn ngun d liu bn mun ti
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Zoom level: chi tit ca bn cn ti
Khung Latitude: Cc ta tri, phi, trn, di ca khu vc cn ti bn
Path to save: ng dn lu tp tin
+ Copy ta c trn khung dn theo hng dn, im cn li bm gc khung ng
Nam
trn Google Map ly ta right Longtude.
+ Lu Tap Maptype ch : Google Satellite Maps nh.
+ Chn ni lu file nh v tinh sau khi ddowwn v: y ti chn mc nh
l
Path to save: C:\Umdtask
+ Nhn Start download nh, hin nh hnh trn l nh ddowwn c.
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+ Sau khi download nh, ta ghp cc tm nh li vi nhau bng cch vo
Tap: Tool --
Map combiner.
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Nguyn Thi An ng . Mail: [email protected]
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+ Sau tm n file lu nh v tinh nh hnh trn:
+ Sau nhn Combine nh cc bc. Vy l c nh Lu trong File lu cc tm nh
nh
sau khi down load v, lu , phn mn ny c ly c ta nn tt nht l File
nh sau
khi ghp li ti th mc , trch copy thiu file li mt ta Longlat.
Bc 4: Chuyn nh download sang ta VN2000 theo 7 tham s.
- Bt phn mn Global Mapper, sau chn Open your own data Files
+ Dn ti th mc lu file va Compine (va ghp nh) ca ti l
C:\Umdtask\.....
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+ Lu sau khi load nh vo, cc bc nguyn ch ny cho ng ta Lat Long
(H
ta trong Google Earth , Google Earth Pro: l h to quc t Lat/Long
WGS84(phin
bn mi c thm h ta UTM).
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+ nh sau khi c load ln phn mn: ta nm gc ng Nam nh em bi .
+ Sau ta tin hnh chuyn sang VN-2000
+ Vo tap Tools Configure nh hnh di:
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+ Chuyn sang Tap Projection, chn Load From File
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+ Tm n th mc cha file h ta .prj ca th mc ci t (Ca ti l ak Lak nn
chn
108 30 mi 3 .
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+ Sau khi la file ta , bn xem li cc thng s nh hnh Trang s 9.
+ Sau khi bm OK chuyn bn c hnh nh trn, gc khung ng Nam ca
phn
mn nh, y ti bi cho d nhn, ta c chuyn sang VN-2000 ri nh cc
Pro.
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+ Sau ta tin hnh xut file ra s dng.
+ Vo File\Export\ Export Raster/Image Format
+ La file : Geo TIFF nh cc bc.
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+ Sau chuyn qua Tap: Export Bounds
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+ Bm tick vo trn Global Projection. V sau tin hnh lu file ni bn
thch
+ nh chuyn cc bc c th s dng Mi 8 load ch Raster, kim tra vi file
bn
xem c khp ta khng.
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+ V y l mt file ti th lng kim tra: (Trn Mi8 nh cc tnh iu)
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- Ngoi ra bn c th s dng phn mm DPSurvey 2.8 kim tra li mt vi
ta
VN2000 so snh vi nh nn.
- Cc bn cng c th s dng phn mn: StitchMaps.v2.40 download mt s nh
do
G.E upload mi nht nh hnh di ( y mnh v d l Th x Gia Ngha, cc
bc
c 2 mu r rt, nh trng l nh mi hn). Cch ny mnh thy chnh xc khng
cao
lm nn post phn sau ny.
- u tin bn ch trc khung nh cn ly trong Google Earth.
- Sau khi ng phn mm StitchMaps.
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+ y mnh chn 1 rows v 1 columns cho tin theo di.
+ Sau bm vo : Stich and calibrate Google Earth images gc ng Nam
ca
phn mm.
+ Cc bc lu 2 Settings v Map nh.
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+ Sau bm chut chn Map.
+ Hin ln hnh nh di y.
, lu nh tick vo trn c ch
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Globalmap nh, ri sau bm Scan.
+ Sau cc bc bm vo : Calibration gn ta latlong
+ Lm tip nh hnh di, v bm vo save hnh ny. nh lu nh, thng chnh
lu trong Settings, ca em mc nh l D:\
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+ Sau cc bc m Global Mapper ra v Open file ti th mc lu file nh
hnh trn:
+ Tip tc thc hin chuyn nh v VN2000 (Thng mnh thy nh ny nm rt
mo,
khng c chnh xc cao, bc no cao th s dng phn mm ny, xin c chia
s
thm kinh ngim.
Phn mm Global Mapper cn rt nhiu ng dng, cc bc hy ln Google
search file
video v nghin cu thm. i vit s dng mi chiu ring ph hp vi Mi
chiu
ca tnh c quy nh.
Vy l ht! Mong mun c giao lu v c hc hi thm t cc ng nghip. Nguyn
Thi An ng Sinh vin lp Qun l t ai K05, trng i hc Ty Nguyn Mail:
[email protected]
Yahoo, Skype: nguyenthaiandong
Facebook: https://www.facebook.com/nguyenthaiandong
n
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