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Production and dissemination of national map

Production and dissemination of national map
  • NGII Plan
  • Building National Spatial Imagenery Database
  • Establishment of National Spatial Data Infrastructure
  • Production and dissemination of national map
Types of Maps
Types of General Maps
Classification by scale
Classification by scale
Classification Large scale Medium scale Small scale
Range 1/5000 or larger Between 1/10000 and 1/100000 Smaller than 1/100000
Type 1/1000 and 1/5000 1/10000, 1/25000, and 1/50000 1/250000 and 1/1000000
Type Execution designs, basic designs, and urban planning Urban and local planning Land planning
Classification by purpose
Classification by purpose
Classification General map Thematic map Specific map
Characteristics A map produced by the government, representing all the land in a unified scale A map that highlights a specific theme by using different colors or symbols A map designed for a specific purpose
Types National base map (Topographic map) Map on land use, map on land characteristics, etc. Geologic map, marine chart, traffic map, tourist map, climatic map, etc.
※ General maps are widely used as base maps for thematic or specific maps
Types and Production of Maps Published by the National Geographic Information Institute
Production and details of topographic maps
Production and details of numerical maps
Scale No. of map sheets Period of revision Size of cadastral map Map distance representing 1km (cm)
1/5000 17,383 Ongoing since 1985 1'30'' × 1'30'' 20
1/10000 282 1990-1997 3' × 3' 10
1/25000 811 Ongoing since 1975 7'30'' × 7'30'' 4
1/50000 241 Ongoing since 1975 15' × 15' 2
1/250000 22 Ongoing since 2000 1°45' × 1° 0.4
1/1000000 1 Ongoing since 2000 6° × 12° 0.1
Map on land use 720 1982-1998 7'30'' × 7'30'' 4
Production and details of digital maps
Production and details of digital maps
Scale No. of map sheets Period of revision Size of cadastral map Map distance representing 1km(cm)
1/1000 3,919 Ongoing since 1995 18'' × 18'' 100
1/5000 17,940 Ongoing since 1995 1'30'' × 1'30'' 20
1/25000 844 Ongoing since 1996 7'30'' × 7'30'' 4
1/250000 13 2000 1°45' × 1° 0.4
Land use map 414 2000 7'30'' × 7'30'' 4
Land characteristics map(1/1000) 9,709 1999 18'' × 18'' 100
Land characteristics map(1/5000) 7,125 1999 1'30'' × 1'30'' 20
Production of numerical topographic maps in 1/1000 scale
Production of numerical topographic maps in 1/1000 scale
Grand total   33,919 114,007  
Classification Year Number of projects (map sheets) Project costs (KRW1 million) Target city
1st NGIS 1995 329 755 5 cities including Busan
  1996 4,491 9,560 22 cities including Seoul
  1997 5,171 14,933 26 cities including Seoul
  1998 2,053 7,738 20 cities including Yongin
  1999 384 1,352 4 cities including Seoul
Subtotal   12,428 34,338  
2nd NGIS 2001 1,100 2,975 5 cities including Seoul
  2002 2,734 9,120 14 cities including Seoul
  2003 2,008 6,707 11 cities including Busan
  2004 1,706 6,872 14 cities including Busan
  2005 2,116 8,810 17 cities including Daegu
Subtotal 9,664 34,484  
3rd NGIS 2006 2,479 8,935 17 cities including Incheon
  2007 2,594 9,368 17 cities including Busan
  2008 2,481 9,206 15 cities including Busan
  2009 2,056 9,188 14 cities including Gwangju
  2010 2,217 8,488 16 cities including Incheon
Subtotal   11,827 45,185  

Map Publication
1/5000 scale topographic maps
Large-scale topographic maps that promote the conservation and development of national land, provide fundamental data for statistical research, and support the improvement of land utilization These maps are used for construction design or for detailed land development projects related to roads, railroads, or rivers. So far, 17,524 map sheets have been produced nationwide since 1975.
Production status
Production status
Year Production Revision Year Production Revision
Total 17,383 37,437 1992 573 240
1975 276 - 1993 421 325
1976 704 - 1994 284 438
1977 634 - 1995 152 375
1978 703 - 1996 136 1,609
1979 849 - 1997 107 1,517
1980 981 - 1998 73 1,141
1981 1,036 - 1999 253 1,042
1982 990 317 2000 1 1,520
1983 1,053 160 2001 312 1,018
1984 950 150 2002 12 100
1985 866 180 2003 37 3,095
1986 900 193 2004 156 3,618
1987 900 200 2005 69 3,087
1988 914 210 2006 69 4,126
1989 800 100 2007 120 2,626
1990 843 200 2008 123 4,238
1991 750 359 2009 236 5,253
Method of production and revision
Aerial images are captured on a scale of 1/20000 and a 1/5000 scale digital map is then created. After a series of processes, involving drawing and editing (generalization, symbolization and exaggeration and/or addition of marginal information in accordance with rules on topographic symbols), a 1/5000 scale topographic map is produced.
Details of representation
Standards for representation
Projection: Transverse Mercator projection based on a plane-rectangular coordinate system
A quadrangle measuring 1.5 minutes of latitude and longitude (an actual distance of approximately 2.75km×2.2km or 55cm×44cm on the map) is created by dividing one grid on a 1/50000 scale map (15 minutes of latitude and longitude) by 100.
Objects for representation
Features that exist at the time of surveying, are impermanent but considered necessary, or would make the map inaccurate if not represented.
Facilities that are under construction but likely to be completed within a short period of time.
Limits to displacement: When features are represented, the displacement for their planar position can be up to 0.7mm.
Roads and railways
Omit when they are less than 1cm long on the map.
Proportionately represented roads: roads that are 3.0m or wider from their shoulder to shoulder
Small roads: roads that are 1.6m or wider and less than 3.0m wide
Lane: roads are less than 1.6m wide
Railways: omitted when they are less than 2.0mm on the map
Boundaries
Mark the boundaries for Seoul Metropolitan City, provincial metropolitan cities, do (province), gun (county), eup or myeon (township).
Maritime boundaries are indicated only when they are undisputed.
When the administrative unit to which islands are assigned needs to be represented, mark it on an appropriate position between two islands to make clear where each island belongs, based on the path of current administrative boundaries.
Other objects
Triangular point: indicate its order as first, second, third and fourth. The elevation of the triangular point is marked in meters after rounding to one decimal point.
Benchmark: indicate its order as first and second. The elevation is marked in meters after being rounded off to two decimal places.
Elevation point Wherever necessary, an elevation point is marked through potting to represent the conditions in a particular area. Elevation is marked in meters after rounding to one decimal place.
Contour lines
Based on the mean sea level at Incheon as a reference surface (Jeju Island uses its own sea level as a reference surface)
Intermediate contour: intervals of 5.0m
Index contour: intervals of 25m, marked in a single line every five intermediate contours
Half-interval contour: marked with a dashed line at intervals of 2.5m when intermediate contours are insufficient to represent specific shapes or terrain features due to a gentle slope
Supplementary contour: marked at a 1/4 of intermediate contour interval when half-interval contours are insufficient to represent terrain due to of a gentle slope
Coordinates
The values for rectangular coordinates are written on each side at an interval of 500m.
Eastern, central, East Sea and western datum points are used for the origins of the rectangular coordinates.
The coordinate for each datum is X (E) =600,000m, Y (N) =200,000m

*According to the Act on Land Survey, Waterway Survey and Cadastral Records that took into effect on December 10, 2009, the previous coordinates, X(E)=500,000m(550,000m for Jeju Island) and Y(N)=200,000m are changed to X(E)=600,000m and Y(N)=200,000.


1/25000 scale topographic map
Overview
This topographic map is a scaled, accurate and detailed representation of necessary contents such as the results of surveying the condition of the earth´s surface, the names of major places, and administrative boundaries. The map is designed to be used as a reference material or a base drawing for other maps necessary for the utilization and development of national land, and an array of other different projects.
Used for the comprehensive development of national territory, including roads and urban planning, land utilization, forest development and the production of tourist maps.
Production status
Produced 811 map sheets spanning the nation since the launch of the project in 1967
Method of production and revision
In the past, aerial images on a scale of 1/37500 were taken periodically every five to ten years, after which a map was produced and/or revised
Today, a map is produced by scaling down and editing a 1/5000 scale digital map
Make both periodic and as-needed revisions through outsourced projects
Details of representation
Standards for representation
Projection: Transverse Mercator projection based on a plane-rectangular coordinate system
Sectioned as quadrangles measuring 7.5 minutes of latitude and longitude (actual distance of approximately 13.75km×11km, or 55cm×44cm on the map)
Production status of 1/25000 scale topographic map
 
Production status of 1/25000 scale topographic map
Year Production Revision Year Production Revision
Total     811 5,135
Before 1970 247 - 1991 4 153
1971 80 - 1992 - 75
1972 165 - 1993 - 95
1973 110 - 1994 - 91
1974 160 - 1995 - 133
1975 - 115 1996 1 234
1976 - 204 1997 - 123
1977 - 97 1998 - 51
1978 - 33 1999 20 134
1980 - 97 2000 - 5
1981 - 84 2001 3 231
1982 - 107 2002 1 309
1983 - 100 2003 - 793
1984 - 106 2004 1 189
1985 - 109 2005 - 139
1986 - 139 2006 - 176
1987 1 106 2007 - 120
1988 1 99 2008 8 184
1989 - 103 2009 9 258
1990 - 110    
Objects for representation
Features that exist at the time of surveying or are considered necessary
Facilities that are under construction but scheduled to be completed within one year
Permissible error for relocating features´ planar position is up to 0.5mm (12.5m in actual distance), or up to 1.2mm under unavoidable circumstances.
Types of lines
Lines are classified as solid and dashed, and divided into six types depending on their width, ranging from 0.05mm to 0.4mm.
Roads and railways
Minimum length of roads: 1mm on the map (5mm for width)
Designated roads: highways, four-lane, two-lane, and one-land roads, road for carts, lanes
Proportionally represented roads: Roads and avenues that are 1.0 mm or wider on the map (25m in actual width)
Railways: In principle, all railways should be indicated.
Boundaries
Mark the boundaries for Seoul Metropolitan City, provincial metropolitan cities, do (province), gun (county), eup or myeon (township)
Maritime boundaries are indicated up to 1 cm from coastal lines on the map only when they are undisputed.
When the administrative unit to which islands are assigned needs to be represented, mark it on an appropriate position between two islands to make clear where each island belongs, based on the path of current administrative boundaries.
Other objects
Triangular point: Every triangular point installed as part of basic surveying needs to be indicated with a symbol.
The elevation of the triangular point is marked in meters after rounding to one decimal place.
Benchmark: All benchmarks installed as part of basic surveying need to be indicated with a symbol.
The elevation of a benchmark is marked in meters after rounding to one decimal place.
Elevation point
Wherever necessary, an elevation point is marked through potting to represent the conditions in a particular area.
Elevation is marked in meters after rounding to the nearest whole number.
Contour lines
Based on mean sea level at Incheon as a reference surface (Jeju Island uses its own sea level as a reference surface)
Intermediate contour: intervals of 10m.
Index contour: intervals of 50m, marked in a single line every five intermediate contours
Half-interval contour: marked in a dashed line at intervals of 5m and used when intermediate contours are insufficient to represent specific shapes or terrain features due to a gentle slope
Supplementary contour: marked at 1/4 of an intermediate contour interval and used when half-interval contours are insufficient to represent a particular terrain because of a gentle slope

1/50000 scale topographic map
Overview
As a scaled-up and edited version of 1/25000 scale map, this is the topographic map in greatest demand and is mainly designed for comprehensive national land development plans, inventorying of forests, and production of tourist maps.
Production status
Produced 241 map sheets spanning the nation since the launch of the project in 1973
Production status of 1/50000 scale map
Production status of 1/50000 scale map
Total     241 1,271
Year Production Revision Year Production Revision
1972 - - 1991 - 42
1973 33 - 1993 - 25
1974 206 - 1994 - 28
1975 - - 1995 - 45
1976 - 30 1996 - 48
1977 - 39 1997 - 30
1978 - 34 1998 - 7
1979 - 10 1999 - 2
1980 - 47 2000 - 1
1981 - 40 2001 - 41
1982 - 30 2002 - 153
1983 - 30 2003 - 40
1984 - 32 2004 - 62
1985 - 34 2005 - 38
1986 - 36 2005 - 38
1986 - 36 2006 - 46
1987 - 37 2007 - 32
1988 - 27 2008 2 54
1989 - 28 2009 - 80
1990 - 30      
Details of representation
Standards for representation
Projection: Transverse Mercator projection based on a plane-rectangular coordinate system
Sectioned as quadrangles measuring 15 minutes of latitude and longitude (actual distance of approximately 27.5km×22km, or 55cm×44cm on the map)
Objects for representation
Features that exist at the time of surveying or are impermanent but considered necessary
Facilities that are under construction but scheduled to be completed within one year
Permissible error for relocating features´ planar position is up to 0.5mm (25m in actual distance), or up to 1.2mm under unavoidable circumstances
Types of lines
Lines are classified as solid and dashed, and divided into six types depending on width, ranging from 0.05mm to 0.4mm.
Roads and railways
Minimum length of roads: 10mm on the map (5mm for width)
Designated roads: highways, four-lane, two-lane, and one-land roads, road for carts, lanes
Proportionally represented roads: Roads and avenues that are 1.0mm or wider on the map (50 m in actual width)
Railways: In principle, all railways should be indicated.
Boundaries
Mark the boundaries for Seoul Metropolitan City, provincial metropolitan cities, do (province), gun (county), eup or myeon (township)
Maritime boundaries are indicated up to 1 cm from coastal lines on the map only when they are undisputed.
When the administrative unit to which islands are assigned needs to be represented, mark it on an appropriate position between two islands to make clear where each island belongs, based on the path of current administrative boundaries.
Other objects
Triangular point: Every triangular point installed as part of basic surveying needs to be indicated with a symbol.
The elevation of a triangular point is marked in meters after rounding to one decimal place.
Benchmark: All the benchmarks installed as part of basic surveying need to be indicated with a symbol.
The elevation of a benchmark is marked in meters after rounding to one decimal place.
Elevation point
Wherever necessary, an elevation point is marked through potting to represent conditions in a particular area.
Elevation is marked in meters after round to the nearest whole number.
Contour lines
Based on mean sea level at Incheon as a reference surface (Jeju Island uses its own sea level as a reference surface)
Intermediate contour: intervals of 10m
Index contour: intervals of 50m, marked in a single line every five intermediate contours
Half-interval contour: marked in a dashed line at intervals of 5m and used when intermediate contours are insufficient to depict specific shapes or terrain features due to a gentle slope
Supplementary contour: marked at 1/4 of an intermediate contour interval and used when half-interval contours are insufficient to identify particular terrain due to a gentle slope
Coordinates
Indicate geological coordinates at the four corners on an inner map quadrangle
The values for rectangular coordinates are written on each side at an interval of 1 km.
Eastern, central, East Sea and western datum points are used for origins of the rectangular coordinates.
The coordinate for each datum is X (E) = 600,000m (550,000m for Jeju Island), Y (N) =200,000m

1/1000000 scale Map of Korea
Overview
This map is designed to be used as a resource for policymaking, education and tourism, allowing an accurate portrayal of overall information about Korean national territories including locations, geographical features, transportation networks and administrative districts.
Production status
The map was first produced in six colors in 1965, and a revision was published in 2000.
Method of production and revision
The map is produced by scaling up and editing 1/25000 scale topographic maps.
In 2000, a revision was produced by scaling up and editing 1/25000 scale maps that had been modified based on satellite images.
Details of representation
Standards for representation
Projection: Transverse Mercator projection based on a plane-rectangular coordinate system (lines of latitude and longitude drawn every 30 minutes)
Objects for representation
Objects to be represented need to be determined after a thorough examination of their significance and shape. Important objects are not to be omitted or depicted as different from their actual features.
Permissible error for relocating features´ planar position is up to 0.5mm (125m in actual distance), or up to 1.2 mm under unavoidable circumstances.
Types of lines
Lines are classified as solid and dashed, and divided into six types depending on their width, ranging from 0.05mm to 0.4 mm.
Roads and railways
Minimum length of roads: 10mm on the map
Indicate all highways, general national roads and provincial roads (including other important roads).
Boundaries
Mark the boundaries for Seoul Metropolitan City, provincial metropolitan cities, do (province), gun (county), eup or myeon (township)
Place indications of the administrative unit to which islands are assigned in an appropriate position.
Contour lines and coordinates Triangular point and elevation point
Contour lines are divided into 100m, 500m, 1,000m and 2,000m
The values of geological coordinates are written on each side of the coordinate on every map.

1/3000000 scale Map of Northeast Asia
Overview
The map has been produced and distributed to raise awareness both at home and abroad about Korea´s precise location and its geological relationship with neighboring nations, thus increasing its national status.
  • 1/3000000 Scale Map of Northeast Asia 1/3000000 Scale Map of Northeast Asia
Timeline
In 1996, a research project for the production of a special map was carried out by the Korean Society of Surveying, Geodesy, Photogrammetry and Cartography.
Produced both a Korean and English-language version of a 1/3000000 map of Northeast Asia
In 1997, the first edition was printed and distributed.
In 2000, the map was distributed for promotional purposes at the 29th International Geographical Congress, held in Seoul, Korea.
In 2000, the English edition was offered twice to the Korean Overseas Information Services, a division of the Government Information Agency.
Targeted at overseas diplomatic offices and major overseas map producers, publishing companies, university libraries and media
Used for promoting the use of the name East Sea (15,000 copies printed)
Requested to adjust the names of places on the map in compliance with the new Korean Romanization (officially announced on July 7, 2000)
Requested to mark East China Sea on the map
Allowed for use by Korea Information Service, indicated at the bottom of the map
In 2005, a revised edition was published.
In 2008, a revised edition was published.

Publication of land use map
Land use map (1972-1998)
Overview
Produced in accordance with Article 14 (2) of the Act on the Utilization and Management of the National Territory (Management Obligation by Specific Use Area) and Article 12 (9) of the Act´s Enforcement Decree (Research on Land Use Status)
Served as a basic resource for developing national territory and land utilization plans
1/25000 scale map that classified uses of land according to land cover characteristics
Production status
Between 1973 and 1980 produced 720 map sheets spanning the nation
Classified land into 41 categories, including sufficiently-irrigated fields, according to the condition of land use by conducting field research based on 1/25000 topographic maps
Method of production and revision
Revised 483 map sheets from 1982 to 1998 based on field research
The rate of revision stood at only 67% due to low demand and insufficient funding
Digital map of land use (2000)
Produced in accordance with Article 14 (2) of the Act on the Utilization and Management of the National Territory (Management Obligation by Specific Use Area) and Article 12 (9) of the Act´s Enforcement Decree (Research on Land Use Status)
Served as a basic resource for developing national territory and land utilization plans
1/25000 scale map that classified uses of land according to land cover characteristics
Production status
Produced 414 map sheets spanning the nation as part of the year 2000 project of creating a digital map of land use
Estimated budget was KRW7.6 billion
Method of production and revision
Based on aerial photography and field research, produced digital map (shp format) that classifies land use into 38 categories according to land cover characteristics
In 2000, the digital map project was undertaken as part of public works program in response to the computerization of thematic maps.
In 2001, the project was suspended for the second year due to the Board of Audit and Inspection´s recommendation that a project of computerizing the land use map was inappropriate.
Details of 2000 land use map project
Project overview
Project title: Digital mapping of land use map
Project period: November 11, 1999-November 10, 2000
Project scope: 414 map sheets at 1/25000 scale (about 55% of the entire national territory)
Project details:
Project details
Title of public work projects Budget Budget Commissioned Project executor
Digital mapping of land use map KRW7.8 billion KRW7.6 billion To private organization Korea Institute of Construction Technology
Project objective
To examine the current status of land use and enhance the basis for developing national territory utilization plans and making policies, as well as to allow public access to information on the conditions of land cover
Project effects
Provide regular daily employment for 440 people and create jobs for 109,500 people a year
Boost related industries by producing a land use map that represents the changes in national territories´ spatial structure and status of land utilization, allowing it to be used as basic data for national resource management

Production of map of Dokdo Island
Background and objective
Claims over the ownership of Dokdo (designated Natural Monument No. 336), which is a part of Korean territory, are emerging as a diplomatic issue between Korea and Japan.
A great number of institutions have collected, examined and offered a vast amount of information about the island´s history, geography, culture and geographical features, but this research is being done sporadically and is focusing on diverse areas. This can lead to damage to the information´s credibility at home and abroad.
NGIS´ performances and timeline
December 1961: Conducted an astronomical survey of Dokdo and produced a 1/3000 scale topographic map (plane table surveying)
May 1980: Conducted an aerial and astronomical survey
-Took a 1/5000 scale aerial photograph and produced a 1/5000 scale map
May 1998: Conducted a precise primary control point survey using GPS (Triangular point Dokdo 11)
August 2000: Conducted an aerial survey and produced a 1/1000 scale digital map
-Took a 1/5000 aerial photograph and surveyed a ground control point using GPS
March 2001: Officially announced the outcome of the surveys of Dokdo (1/1000 scale digital map)
December 2004: Conducted a third control point for Ulleungdo Island and Dokdo Island using GPS
-Officially announced and promoted the results of the survey
April 2005: Produced a three-dimensional stereo image map of Dokdo
-Used Aero-Lidar and digital photography
June 2005: Officially announced government standards of Dokdo´s general information
-Coordinates, land size, circumference, number of affiliated islands, etc.
December 2005: Codified the names of Dokdo´s affiliated islands
December 2005: Published "The Geography of Korea" (southeastern region including Dokdo)
April 2006: Produced both Korean and English-language versions of a world map that names Dokdo
December 2006: Planned to install a GPS observation station
September 2007: Launched a project to establish a digital library covering Dokdo´s geographical information
Revised the 1/1000 and 1/5000 digital maps, photographed using Lidar and digital cameras, and produced promotional materials
The project was launched according to the Plan for Sustainable Use of Dokdo Island (former Ministry of Maritime Affairs and Fisheries)
2000 report on Dokdo surveying (open to public)
Geographical location: Seodo (west island) is at the center of the islands, and Dongdo (east island) is located at the Dokdo 11 triangulation point
-Seodo: 37° 14´ 30.6" N, 131° 51´ 54.6´´ E
-Dongdo: 37° 14´ 26.8" N, 131° 52´ 10.4´´ E
Land Area: 185,059.01m²
-Seodo: 87,848.52m²
-Dongdo: 71,757.05m²
Geographic shape: Composed of two main islands together with 78 rocky islets and reefs
-Circumference: 5.4 km (Dongdo: 2.8km, Seodo: 2.6km)

Revision Plan for National Base Map (2011--2012)
Periodic revision
Produce a revised map through correction plotting based on aerial images
Revision was conducted every four to five years over the past decade and the majority of the modifications were completed nationwide. Over the coming few years, the map will be revised only for those areas identified in aerial photographs as having changed.
The level of difficulty of terrain in areas such as metropolitan cities, cities, and counties will be taken into consideration.
Reproduction will proceed for some areas that show a low level of accuracy.
About 1,000 map sheets that were created by scanning a paper map (central inland area)
Island areas where field surveying and research were difficult
About 3,000 map sheets covering large urban areas where the full maps were produced too long ago (capital area and Busan)
  • Year of Completed Map Production Year of Completed Map Production
    (Completed map is yet to be produced)
  • Areas Scheduled for Reproduction Areas Scheduled for Reproduction
Modifications to the national base map will be made at the time of field research
The representation of terrain and features on the map was previously based on the timing of aerial photography.
Following aerial photography, roads and major structures that are newly built or scheduled to be competed will be examined through supplementary field surveys (aligned with ongoing revision).
Ongoing revision
Make occasional modifications to those areas that have undergone territorial changes over a certain scale range (length: 1 km, area: 53,8200ft²)
Take advantage of as-built drawings, aerial images, field surveys, MMS (mobile mapping system), and other methods
Monitor alterations by using Korea Online E-Procurement System or public surveying system
Minimize omissions by monitoring changes from the commencement of planning stages, including construction drawings
Inform the public of the monitored changes by amending the changes to the National Base Map on a monthly basis
Conduct field surveys when the elevation above ground level changes due to factors like residential land development
Previously, when supplementary field surveying was conducted, only planar coordinates were produced through GPS
Promotion of related research (Prioritizing and promoting on a yearly basis)
Reestablish the level of accuracy for digital maps and study future models of these maps
Conduct research on improving map quality standards to reflect the latest surveying technology
Develop new approaches to improve field research in terms of techniques and items to be examined
Look for ways to improve projection methods and management systems for map sheets
Examine standards for enhancing the use of seamless data
Refine and polish the map to increase the satisfaction of and utilization by paper topographic map users
Conduct research into automatic mapping technology based on integrated digital maps
Overhaul the related rules, including a work standard for writing digital maps and review the estimated manpower and materials
Develop a customized work standard, such as digital plotting and digitalizing
Focus research on specific areas: objects for representation, standards, symbols, colors, and attributes
Reexamine the supply system, including metadata for each map sheet and layer, as well as pricing policy
Manage metadata based on a shortened cycle of periodic revision and year-round modification
Establish a cooperative system for establishing administrative boundaries and monitoring topographical changes
Work with related authorities including the Ministry of Public Administration and Safety, the Ministry of Land, Transport and Maritime Affairs, and local governments
Develop measures to monitor changes using the databases of other organizations
Aerial photography
2011 aerial photography will cover areas scheduled for map revision in 2012 (Geospatial Imagery Information and Photogrammetry Division).
Capture a digital color aerial photograph with spatial resolution 25cm or higher (East-south region).
Amount of investment
Amount of investment
Category 2011 2012 Subtotal
Digital aerial photography 4,491 4,500 8,991
Revision of National Base Map (Periodical) 28,957 32,089 61,046
Revision of National Base Map (Ongoing) 2,000 2,000 4,000
Related research projects 500 500 1,000
Grand total 35,948 39,089 75,037
* Scheduled aerial photography is subject to adjustment in connection with the project to establish three-dimensional spatial data.

Periodic Revision Estimated Breakdown
Periodic Revision Estimated Breakdown
Region Type of revision Number of map sheets(1/5000) Unit price per map sheet (KRW) Amounts(KRW1 million)
West region (Capital Area + Chungcheong-do and Jeollabuk-do) Full revision 1.951 6,866 13,396
Partial revision 5,275 2,950 15,561
Subtotal 7,221 - 28,957
East-south region (Gyeongsangnam-do and Jeolla-do+ Gangwon-do and Gyeongsangbuk-do) Full revision 1,333 6,360 8,478
Complete revision 8,810 2,680 23,611
Subtotal 10,148 - 32,089
Total 17,369 - 61,046
* The breakdown above was calculated based on current standards of design. Some of the estimates are subject to change, depending on fluctuations in labor and materials costs.