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International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Vol XXXV, Part B2. Istanbul 2004
Development Agency of Japan) (which was merged to JAXA
(Japan Aerospace Exploration Agency) in 2003) provides the
satellite image data and EORC (Earth Observation Research
Center) provides the application software for the satellite image.
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National Mapping Division
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Figure 1 USA Satellite Imagery Information Service
organization
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Figure 2 Japan Satellite Imagery Information Service
Organization
For the foreign cases, we can note that the information of
satellite image is systematically managed by the government.
For the domestic case, integrated management of satellite
image information service is not constructed, but some
institutes have their own search and distribution service and
another institute. distributes their own data for the institutes
which needs them.
From these facts, the overall information of satellite image
should be constructed for the efficient use of information of
satellite image in KOREA. Though we cannot manage overall
satellite images in Korea, this project will be the basis of the
upcoming integrated management of satellite image information
of Korea.
622
3. SATELLITE IMAGERY METADATA
3.1 State of standard for satellite imagery metadata
ISO/TC 211 Geographic information/Geomatics is
responsible for the ISO geographic information series of
standards. For the metadata about geographic information
metadata, ISO 19115 defines the schema required for describing
geographic information including satellite images and services.
It provides information about the identification, the extent, the
quality, the spatial and temporal schema, spatial reference, and
distribution of digital geographic data.
ISO 19115 defines mandatory and conditional metadata
sections, metadata entities, and metadata elements and optional
metadata elements to allow for a more extensive standard
description of geographic data, if required. It also provides a
method for extending metadata to fit specialized needs. Figure 3
shows the UML of the ISO 19115.
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Figure 3 UML of ISO 19115
To complement standard to ISO 19115 Geographic
information — Metadata, “ISO 19115 Part2” define metadata
clements to support imagery, and gridded data and extend the
UML model for metadata: it support the collection and
processing of natural and synthetic imagery produced by remote
sensing and other imaging processes.
In US, The Federal Geographic Data Committee approved the
Content Standard for Digital Geospatial Metadata (FGDC-STD-
001-1998) in June 1998. In Korea, TTA (Telecommunications
Technology Association) approved the Metadata Standard for
Geographic Information Distribution (TTAS.KO-10.0139) in
December 2002. Since this standard add necessary items for
distribution of geographic information to ISO 19115 which has
target for metadata of vector data, it is necessary to add some
items for satellite imagery information.
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