Alternate title

True Orto 2025

Date (Creation)

2025-11-01

Date (Publication)

2026-03-01

Citation identifier

SCNE / TrueOrto2025

Citation identifier

SCNE / OrthoimageCoverage

Presentation form

Digital image

Purpose

True orthophoto generation is a methodology that allows for the correction of all elements present in the image so that they are projected orthogonally, at a uniform scale, eliminating distortions in buildings and other elevated features, and guaranteeing a completely orthogonal representation of every point. This characteristic makes it indispensable for use cases in urban environments and areas with complex topography.

Credit

Instituto Geográfico Nacional

Credit

O.A. Centro Nacional de Información Geográfica

Credit

Sistema Cartografico Nacional

Point of contact

Organisation name	Individual name	Electronic mail address	Role
Spanish Geographic Institute		ign@transportes.gob.es	Point of contact
National Centre of Geographic Information (CNIG)		consulta@cnig.es	Publisher

Maintenance and update frequency

Irregular

Update scope

Dataset

Maintenance note

Actualización irregular

GEMET - INSPIRE themes, version 1.0

• Ortoimágenes

Keywords

• High-value dataset

High-value dataset categories

• Earth observation and environment
• Orthoimagery

Ámbito espacial

• Nacional

Keywords

• Sistema Cartográfico Nacional

• España

Specific usage

True orthophoto generation is a methodology that allows for the correction of all elements present in the image so that they are projected orthogonally, at a uniform scale, eliminating distortions in buildings and other elevated features, and guaranteeing a completely orthogonal representation of every point. This characteristic makes it indispensable for use cases in urban environments and areas with complex topography.

User contact info

Organisation name	Individual name	Electronic mail address	Role
National Geographic Institute		ign@transportes.gob.es	User

Access constraints

Other restrictions

Other constraints

Sin limitaciones al acceso público.

Use constraints

Other restrictions

Other constraints

No se aplican condiciones de acceso y uso.

Other constraints

Ortoimagen verdadera PNOA 2025 CC-BY 4.0 scne.es

Spatial representation type

Grid

Distance

0.25   0.25 metros

Language

Spanish; Castilian

Character set

UTF8

Topic category

• Imagery base maps earth cover

Description

Extremadura y Región de Murcia

Supplemental Information

Próximamente

Unique resource identifier

ETRS89 UTM huso 29 en la Península.

Unique resource identifier

ETRS89 UTM huso 30 en la parte correspondiente de la Península, Ceuta y Melilla.

Distribution format

Name	Version
Cloud Optimized GeoTIFF, COG	Unknown

Units of distribution

Each mosaic covers one MTN25 sheet.

OnLine resource

Protocol	Linkage	Name
OGC Web Map Service	https://www.ign.es/wms-inspire/pnoa-ma?request=GetCapabilities&service=WMS&VERSION=1.3.0	View service (WMS) for Orthoimagery of Spain
	https://centrodedescargas.cnig.es/CentroDescargas/ortoimagenes-verdaderas	Download portal of CNIG

Hierarchy level

Dataset

Statement

True RGB orthophotos generated from photogrammetric flights in urban areas with 80% longitudinal and 60% transverse overlap.

A Digital Surface Model, obtained through supercorrelation, is used with a grid spacing equal to the GSD size of the generated true orthophoto.

Description

Error medio cuadrático: 3 x GSDof

Metadata

File identifier

spaignTrueOrto2025 XML

Metadata language

Spanish; Castilian

Character set

UTF8

Hierarchy level

Dataset

Date stamp

2026-03-17

Metadata standard name

INSPIRE Regulation Nº1205/2008

Metadata standard version

TG 2.0

Metadata author

Organisation name	Individual name	Electronic mail address	Role
Spanish Spatial Data Infrastructure (IDEE)		ign@transportes.gob.es	Point of contact

Other language

Language	Character encoding
English	UTF8