Initial GMES Service for Geospatial Reference Data Accesseda.europa.eu › docs › documents › dem.pdf · 2012-10-16 · Indra. Remote Sensing Systems Department Brussels, 07-06-2011

Indra. Remote Sensing Systems DepartmentBrussels, 07-06-2011

Initial GMES Service forGeospatial Reference Data Access

2

INITIAL GMES SERVICE for GEOSPATIAL REFERENCE DATA ACCESS

CONTENTS

00 About Indra

01 What is a DEM?

02 What do I need a DEM for?

03 DEM sources

04 Interoperability and availability issues

05 EU-DEM

06 Hydrography

3


About Indra

The premier IT company in Spain and a leading IT multinational in Europe and Latam

31,000 professionals 110 countriesRevenues: M2,557€

Own solutions and technology

R+D+i: 7%-8% revenues

Differential business model based on Innovation

Among the 3 largest European IT services companies by market cap

4


About Indra

10%

Tel

eco

m &

Med

ia

13%14%15%20%27%

Fin

anci

alS

ecto

r

Hea

lth

& P

ub

licA

dm

inis

trat

ion

En

erg

y&

In

du

stry

Sec

uri

ty&

Def

ence

Command Control & Comms.

Aerial Defence

Electronic Warfare

Simulation

Homeland Security

(…)

Space

51%International

5


About Indra

18 years experience in satellite ground

segment

Helios I & II

Pleiades

SMOS

SEOSAT & SEOSAR

METOP

Etc.

High level data processing and

dissemination systems

Civilian and Defence systems

Spatial Data Infrastructures

MoD exploitation systems

SAR data processing

Urban geoinformation management

Remote Sensingapplications and

services

GMES

R&D

Training

High volume cartographicproduction

Imagery supply

Advanced geoinformation

Certified developer forERDAS, ESRI, Intergraph

Consultancy and marketstudies

6


CONTENTS

00 About Indra

01 What is a DEM?


03 DEM sources


05 EU-DEM

06 Hydrography

7


A DEM can be defined as a digital statistic numeric representation of the land surface, using x, y, z point coordinates related to a known georreferenced axis system (Miller y Laflamme 1958).

What is a DEM?

8


What is a DEM?

0

10

20

30

40

5005

1015

2025

3035

4045

50

0

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

9


5 10 15 20 25 30 35 40 45 50

5

10

15

20

25

30

35

40

45

50

What is a DEM?

0.2

0.4

0.6

0.8

1.0

10


What is a DEM?

11


What is a DEM?

0

10

20

30

40

500

10

20

30

40

50

0

0.2

0.4

0.6

0.8

1

12


What is a DEM?

0

10

20

30

40

500

10

20

30

40

50

0

0.5

1

13


What is a DEM?

0

5

10

15

20

25

30

35

40

45

50 0

10

20

30

40

50

00.51

14


What is a DEM?

0

10

20

30

40

50

0

5

10

15

20

25

30

35

40

45

50

15


What is a DEM?

0 5 10 15 20 25 30 35 40 45 50

0

5

10

15

20

25

30

35

40

45

50

h=0

h=1

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

h=0.5

16


What is a DEM?

0 5 10 15 20 25 30 35 40 45 50

0

5

10

15

20

25

30

35

40

45

50

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

17


What is a DEM?

0 5 10 15 20 25 30 35 40 45 500

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

1

18


What is a DEM?1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28

1 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.002 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

3 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.004 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

5 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.006 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.00 0.00

7 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.02 0.02 0.02 0.02 0.02 0.02 0.02

8 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.02 0.03 0.04 0.05 0.05 0.05 0.05 0.05 0.05 0.059 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.09 0.10 0.09 0.09 0.08

10 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.04 0.05 0.07 0.09 0.10 0.12 0.13 0.14 0.14 0.15 0.14 0.14 0.1311 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.03 0.05 0.07 0.09 0.11 0.13 0.15 0.17 0.19 0.20 0.20 0.21 0.20 0.20 0.19

12 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.03 0.05 0.08 0.10 0.13 0.16 0.19 0.21 0.23 0.25 0.26 0.27 0.27 0.27 0.26 0.2513 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.03 0.06 0.08 0.11 0.15 0.18 0.21 0.24 0.27 0.30 0.32 0.33 0.34 0.35 0.34 0.33 0.32

14 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.03 0.05 0.08 0.12 0.15 0.19 0.23 0.27 0.31 0.34 0.37 0.39 0.41 0.42 0.42 0.42 0.41 0.39

15 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.05 0.08 0.11 0.15 0.20 0.24 0.29 0.33 0.37 0.41 0.44 0.47 0.48 0.50 0.50 0.50 0.48 0.4716 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.04 0.07 0.10 0.15 0.19 0.24 0.29 0.34 0.39 0.44 0.48 0.51 0.54 0.56 0.57 0.58 0.57 0.56 0.54

17 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.03 0.05 0.09 0.13 0.18 0.23 0.29 0.34 0.40 0.45 0.50 0.54 0.58 0.61 0.64 0.65 0.65 0.65 0.64 0.6118 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.04 0.07 0.11 0.16 0.21 0.27 0.33 0.39 0.45 0.51 0.56 0.61 0.65 0.68 0.71 0.72 0.73 0.72 0.71 0.68

19 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.05 0.09 0.13 0.19 0.24 0.31 0.37 0.44 0.50 0.56 0.62 0.67 0.71 0.75 0.77 0.79 0.79 0.79 0.77 0.7520 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.03 0.06 0.10 0.15 0.21 0.27 0.34 0.41 0.48 0.54 0.61 0.67 0.72 0.77 0.80 0.83 0.85 0.85 0.85 0.83 0.80

21 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.04 0.07 0.12 0.17 0.23 0.30 0.37 0.44 0.51 0.58 0.65 0.71 0.77 0.82 0.85 0.88 0.90 0.90 0.90 0.88 0.85

22 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.05 0.08 0.13 0.19 0.25 0.32 0.39 0.47 0.54 0.61 0.68 0.75 0.80 0.85 0.89 0.92 0.94 0.95 0.94 0.92 0.8923 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.05 0.09 0.14 0.20 0.26 0.33 0.41 0.48 0.56 0.64 0.71 0.77 0.83 0.88 0.92 0.95 0.97 0.98 0.97 0.95 0.92

24 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.05 0.09 0.14 0.20 0.27 0.34 0.42 0.50 0.57 0.65 0.72 0.79 0.85 0.90 0.94 0.97 0.99 0.99 0.99 0.97 0.9425 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.05 0.10 0.15 0.21 0.27 0.35 0.42 0.50 0.58 0.65 0.73 0.79 0.85 0.90 0.95 0.98 0.99 1.00 0.99 0.98 0.95

26 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.05 0.09 0.14 0.20 0.27 0.34 0.42 0.50 0.57 0.65 0.72 0.79 0.85 0.90 0.94 0.97 0.99 0.99 0.99 0.97 0.94

27 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.05 0.09 0.14 0.20 0.26 0.33 0.41 0.48 0.56 0.64 0.71 0.77 0.83 0.88 0.92 0.95 0.97 0.98 0.97 0.95 0.9228 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.05 0.08 0.13 0.19 0.25 0.32 0.39 0.47 0.54 0.61 0.68 0.75 0.80 0.85 0.89 0.92 0.94 0.95 0.94 0.92 0.89

29 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.04 0.07 0.12 0.17 0.23 0.30 0.37 0.44 0.51 0.58 0.65 0.71 0.77 0.82 0.85 0.88 0.90 0.90 0.90 0.88 0.8530 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.03 0.06 0.10 0.15 0.21 0.27 0.34 0.41 0.48 0.54 0.61 0.67 0.72 0.77 0.80 0.83 0.85 0.85 0.85 0.83 0.80

31 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.05 0.09 0.13 0.19 0.24 0.31 0.37 0.44 0.50 0.56 0.62 0.67 0.71 0.75 0.77 0.79 0.79 0.79 0.77 0.7532 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.04 0.07 0.11 0.16 0.21 0.27 0.33 0.39 0.45 0.51 0.56 0.61 0.65 0.68 0.71 0.72 0.73 0.72 0.71 0.68

33 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.03 0.05 0.09 0.13 0.18 0.23 0.29 0.34 0.40 0.45 0.50 0.54 0.58 0.61 0.64 0.65 0.65 0.65 0.64 0.61

34 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.04 0.07 0.10 0.15 0.19 0.24 0.29 0.34 0.39 0.44 0.48 0.51 0.54 0.56 0.57 0.58 0.57 0.56 0.5435 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.05 0.08 0.11 0.15 0.20 0.24 0.29 0.33 0.37 0.41 0.44 0.47 0.48 0.50 0.50 0.50 0.48 0.47

36 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.03 0.05 0.08 0.12 0.15 0.19 0.23 0.27 0.31 0.34 0.37 0.39 0.41 0.42 0.42 0.42 0.41 0.3937 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.03 0.06 0.08 0.11 0.15 0.18 0.21 0.24 0.27 0.30 0.32 0.33 0.34 0.35 0.34 0.33 0.32

38 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.02 0.03 0.05 0.08 0.10 0.13 0.16 0.19 0.21 0.23 0.25 0.26 0.27 0.27 0.27 0.26 0.2539 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.03 0.05 0.07 0.09 0.11 0.13 0.15 0.17 0.19 0.20 0.20 0.21 0.20 0.20 0.19

40 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.04 0.05 0.07 0.09 0.10 0.12 0.13 0.14 0.14 0.15 0.14 0.14 0.13

41 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.03 0.04 0.05 0.06 0.07 0.08 0.09 0.09 0.10 0.09 0.09 0.0842 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.02 0.02 0.03 0.04 0.05 0.05 0.05 0.05 0.05 0.05 0.05

43 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.02 0.02 0.02 0.02 0.02 0.02 0.0244 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.01 0.01 0.01 0.00 0.00

45 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0046 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0047 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

48 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.0049 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

50 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00

19


What is a DEM?

5 10 15 20 25 30 35 40 45 50

5

10

15

20

25

30

35

40

45

50

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

20


What is a DEM?

21


DEM features

DEM quality specification

Resolution or pixel size or posting

Vertical accuracy

Coverage

Format, datum and metadata

Spatial resolution Vertical accuracy (90%)DTED-1 90m x 90m <30mDTED-2 30m x 30m <18m

22


CONTENTS

00 About Indra

01 What is a DEM?


03 DEM sources


05 EU-DEM

06 Hydrography

23


What do I need a DEM for?

5 10 15 20 25 30 35 40 45 50

5

10

15

20

25

30

35

40

45

50

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9

24



Accurate and interoperable cartography generation

Very High Resolution imagery processing

Satellite imagery acquisition planning

3D scenario generation

Viewshed and Route Intervisibility

Trafficability analysis; route analysis

Flight simulation

UAV flight planning

3D Mission planning

Ballistic trajectory determination and tracking

Flooding risk mapping

etc

25



3D terrain visualization

26




27




28



Cartographic production from airborne and satellite images

A DEM is required to generate an accurate map out of a satellite image. Else…

Image can be poorly geolocated (absolute location error up to a few hundred metres)

Image can have severe deformations (case of radar imagery)

29



Putting the satellite image into adequate coordinates

X,Y

30



Providing map coordinates and projection for every pixel in the satellite image

X,Y

+

4º 55’ 60” N52º 19’ 60” W

31



Providing map coordinates and projection for every pixel in the satellite image: the image undergoes deformations

32



Having an accurate DEM is critical to have accurate maps

a = Actual distanceb = Distance assuming flat Earth (no topography)

Satellite / camera

Error=b-a

33



Examples from Google Earth

Error=13m

34



Range

Easting

Azimut

35


CONTENTS

00 About Indra

01 What is a DEM?


03 DEM sources


05 EU-DEM

06 Hydrography

36


DEM sources

LIDAR – Laser scanner

Airborne / satellite stereo images

Synthetic Aperture Radar Interferometry

From Lidar: Using an airborne laser device. It emits a laser pulse and it receive the bounce and user the time between emit and bounce to calculate the height in a point.

From radar. Using airborne or spaceborne intereferometry / radargrammetry

From Stereo Flight or Satellite with Stereo Capacity: combining images taken from different angles to create 3D stereo effect

37


DEM availability

Public Global scale (nearly full Earth coverage)

GTOPO 30 30 arc seconds (900m) resolution.

SRTM 90m resolution

ASTER 30m resolution

Commercial products from multiple vendors

Variable coverage and resolution

Technologies:

Satellite optical imagery

Airborne photogrammetry

Synthetic Aperture Radar (SAR): Insar / Radargrammetry

LIDAR

38


CONTENTS

00 About Indra

01 What is a DEM?


03 DEM sources


05 EU-DEM

06 Hydrography

39


DEM interoperability and availability issues

010

2030

4050

0

20

40

600

0.2

0.4

0.6

0.8

1

PR of WesternBananastan

PR of EasternBananastan

40



5 10 15 20 25

5

10

15

20

25

30

35

40

45

505 30 35 40 45 50



The ideal situation but…

41



5

10

15

20

25

30

35

40

45

5 30 35 40 45 50



DEMs are displaced and they do not match in the border (location error)

5 10 15 20 2550

Error

42



5 30 35 40 45 50

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9


10 20 30 40 50

10

20

30

40

50

60

70

80

90

100


DEMs are of different resolution

43



5 30 35 40 45 50

0.1

0.2

0.3

0.4

0.5

0.6

0.7

0.8

0.9


10 20 30 40 50

10

20

30

40

50

60

70

80

90

100


h=1,0h=1,1

h=0,1h=0,0

DEMs have different reference height (datum)

44


5 10 15 20 25

5

10

15

20

25

30

35

40

45

50




DEMs have different projection

45


5 10 15 20 25

5

10

15

20

25

30

35

40

45

50




A resampling is needed…

46


5 10 15 20 25

5

10

15

20

25

30

35

40

45

50



There is no DEM!


47


5 10 15 20 25

5

10

15

20

25

30

35

40

45

50



We are foreced to use a “global DEM”…


48



Western Bananastan

Eastern Bananastan

SouthernBananastan

Pinenastan

49


The DEM has to be considered an infrastructure

The same way as the maps, the DEM is an infrastructure that if made available it can result in a boom of downstream applications

Satellite imagery production centres working with Defence(Helios, Pleiades, Cosmo Skymed, SARLupe, etc.) or commercial satellites (SPOT-5, Ikonos, GeoEye, etc.) need DEMs

50


CONTENTS

00 About Indra

01 What is a DEM?


03 DEM sources


05 EU-DEM

06 Hydrography

51


EU-DEM

Many GMES applications are requiring a DEM

A seamless DEM for Europe

Which DEM to use?

52


EU-DEM

Requirements

30m pixel

+/- 7m height accuracy

Fulfilling Land Mapping and Emergency Response Servides (LMCS and ERCS)

Solution

ASTER GDEM based

SRTM for accuracy improvement -> Manual Edition

Access to NEXTMap 1 arcsec for LMCS

Access to NEXTMap 0,15 arcsec for ERCS

Ownership of EU-DEM by EC

53


Service Definition

Product Coverage Data Sources

Resolution Vertical Accuracy

Access

LMCS

EU-DEM EEA38 SRTM & ASTER

1 arc-second +/- 7.0 metres RMSE

Unrestricted

NEXTMap Enhanced EU-DEM

20 Western EU countries

NEXTMap

Europe DTM

1 arc-second (resampled from 0.15 arc-second)

+/- 1.0 metre RMSE

Restricted as per End User License Agreement

ERCS

NEXTMap Europe DTM Core Product

20 Western EU countries

NEXTMap

Europe

0.15 arc-second +/- 1.0 metre RMSE

Restricted as per End User License Agreement

(30m)New!

54


Production Methodology - Intermap

1. Data Preparation

• Aligning input data (NEXTMap®, GDEM ASTER, …)

• Pilot area definition (2° x 2°)

• Total of 1,165 tiles (1°)

NEXTMap

SRTM

GDEM

60°N

55



2. Processing Steps

• ASTER GDEM void masking

• Horizontal/Vertical shift correction

• Gap filling

• Flattening water bodies

• Documenting

56



ASTER GDEM harmonisation with NEXTMAP DTM

57



• Edge matching of EU-DEM & NEXTMap Enhanced EU-DEM

• Editing of blunders and water features in 3D stereo environment using QCed water layer provided by AGI

GDEM

NEXTMap ASTER „mole runs“

58



3. Final Data QC & Validation

• Vertical accuracy checks using available reference data (LiDAR, VCPs, etc.)

• Tiles review for adherence to product specifications

• Validate adherence to edit rules

• Reports

59


CONTENTS

00 About Indra

01 What is a DEM?


03 DEM sources


05 EU-DEM

06 Hydrography

60


Hydrography

Requirements

1:100.000 scale

Support for WISE applications

Relation with ECRINS and ERM (INSPIRE) current hydrological models

Solution

Extraction of water bodies from IMAGE2006 (based on SPOT/IRS data)

Delineation of river lines on top of IMAGE2006

Reference material: ECRINS, Topographic maps, Google Earth, etc.

Generation of river network topology

Integration / cross check with EU-DEM

61


Production Methodology – HYDROGRAPHY (AGI)

1. Data Preparation

Download IMAGE 2006/2009 Transformation to production-ready CRS and formatsCreation of satellite imagery database and spatial index for easy search and preview of the available scenesSelection of the best available imagery for production:

– Early-to-mid-summer season– Cloud-free coverage (<5%)

Mosaicking of identified image “batches” (same date)Selecting replacements for patching areas not suitable for production (clouds/shadows, snow/ice, etc.)Acquisition of the ancillary datasets:

– GEONAMES (toponyms)

– Euro-Regional Map (1:150,000)– National datasets (if available)

62


IMAGE 2006 NDVI

REFLECTANCE WATER

3. Data Processing

63

INITIAL GMES SERVICE for GEOSPATIAL REFERENCE DATA ACCESS4. Data Editing & Harmonization

Accuracy – up to 10 mAutomatic cleanup of coverages

100% inspection for artefacts

QC – 20% of all objects

64


Watersheds and sub-watersheds

65


Production Coordination

Requirements

Integration of water bodies with EU-DEM

Assignment of node heights based on EU-DEM

Ensuring rivers flowing down for river polygons

Solution

Production workflow

66


EU-HYDRO / EU-DEM overlay

PRODUCTION SEQUENCE

67


EU-HYDRO / EU-DEM overlay

68


Access to EU-DEM and EU-HYDRO services

Requirements

Services based on open standards

Fulfilling INSPIRE requirements

Client Showcase (web based viewer)

Solution

Final hosting site to be defined

Metadata schema implementing INSPIRE rules for every theme

Base services implemented with open source software

Metadata is GeoNetwork compliant

Implementation of WMS/WCS/WFS standards with GeoServer / GeoWebCache

69


Project Status

• Hydrographic layer content already defined: tables, attributes, metadata, etc.

• EUDEM layer features already defined

• Two Prototype areas produced for testing purposes

• Production started for water bodies (more than 45% tiles in external QC for EU-DEM “burning”)

• Access System and Client Showcase already developed.

70


Project Plan

• EU-DEM planned to be finished by Oct. 2011

• Hydrographic layers to be finished by mid 2012

71


Client Showcase – web based viewer

72


Client Showcase – web based viewer

73


Daniel CarrascoAntonio GarzónJosé Antonio RedondoRemote Sensing Systems [email protected]

Documents

Initial GMES Service for Geospatial Reference Data Accesseda.europa.eu › docs › documents › dem.pdf · 2012-10-16 · Indra. Remote Sensing Systems Department Brussels, 07-06-2011