LiDAR Data Published via Standard Web Services in the Spanish NSDI

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3 Νοε 2013 (πριν από 3 χρόνια και 9 μήνες)

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LiDAR Data Published via Standard Web Services in the Spanish
NSDI


A. F. Rodríguez,
P. Abad, E. López. A. Sánchez, M. Juanatey, C. Soteres,

C. Ruiz
,
J. Martínez,

J.C. Ojeda

National Geographic Institute, Madrid, Spain



The National Spanish Spatial Data
Infrastructure (
www.idee.es
)
, leaded by IGN Spain,

was born in 2004 and
embraces more than
1,000
s
tandard
w
eb
s
ervices published by
National, Regional and Local governments as well as academia and private companies,
all of
them under the umbrella of Inspire Directive.



By the other hand, IGN Spain not only is leading this wide SDI movement, but also has
launched several big collaborative production projects, as PNOA (Aerial
Ortophoto
graphy

National

Program
) which
produces a

complete coverage of

Spa
i
n

w
ith
submetric ortophoto each 2 years
under a collaborative framework between National
and
Regional Gover
n
ments.

Th
e Web Map Service publishing PNOA ortophotos since
2008 h
av
e

more than 30 M of individual petitions per month.



In PNOA project, LiDAR data has been incorporated from 2009
w
ith a
density
of 1/2
point per m
2

and very recently we have opened
s
tandard
w
eb
s
ervices and some
applications publishing this information

for the 40% of Spanish territory
on the Web:


-

A W
MS

show
ing LiDAR points in several styles (
height
,
intensity
,
classification
) with the GetFeatureInfo operation
enabled
.

-

An
on
-
line
application to comput
e
profiles

allowing

users to do measurements
.

-

An on
-
line application to compute 3D visualization of the point
cloud.


Next step
s

are:

reengineering the service to fulfil Inspire requirements defined in
Implementing Rules

on network services, visualization services and data specification;
extend the extent to have full coverage of Spanish territory; implementing a
WMTS
service to speed up the visualization; implementing a download service under the IGN
data policy defined in FOM 956/2008; and explore the possibility of offering standard
analysis applications of LiDAR data.


In this communication we will describe the

services and functionality implemented, the
main difficulties and problems founded

and the con
c
l
usions and lessons learnt.


We think this line of work, based on free and open publication of LiDAR data of all
Spain via
s
tandard
w
eb
s
ervices, is a wonderfu
l opportunity of offering a detailed and
precise
description of the Spanish territory to all kind of users and applications.