GIS-34: PROGRESS IN MAP REVISION PROCESSES

Order No:

GIS-34

Total Length:

90 minutes

It is widely recognized that the revision of digital topographic databases is the main task of map makers for the future; superimposition of new imagery and both old and new map data is an important, effective but not entirely perfect tool; and there is wide interest and some practical success in detecting and recording change for small-scale mapping using satellite imagery, with automation already making some impact on practical procedures.


Devising Automated Technology for Large-Scale Mapping in Bulgaria

Reference No:

GIS 34-1

A brief (8-minute) overview of an automated technology for compilation and revision of large-scale maps by photogrammetric measurements which was devised at the Photogrammetry and Remote Sensing Section of the Geodesy And Photogrammetric Company for Research and Technology, in Sofia, Bulgaria.

Lecturer:

  • Ivan Katzarsky, Geodesy and Photogrammetry Co., Bulgaria

Suitability for
Level of
Instruction:

  • University (Undergraduate)
  • Advanced Research
  • Professional

Duration:

12 minutes

Year of
Presentation:

1992

Suggested
Presentations:

GIS-29

 

Automatic Revision of the European Community's Corine Land Cover Database Using Satellite Images

Reference No:

GIS 34-2

The CORINE Land-Cover Project, dating the land-code database for the whole of Europe, is producing a number of data layers covering the whole of the European Community. The idea is to create a map of the whole European Community at 1:100,000 scale, which means covering an area of 2.25 million HA. Digitized parcels plus class attributes constitute the database. The initial database production is based on a manual photo-interpretation method, utilizing mainly satellite photos (not digital).

Lecturer:

  • Graeme Wilkinson, Institute for Remote Sensing Applications, Italy

Suitability for
Level of
Instruction:

  • University (Undergraduate)
  • Advanced Research
  • Professional

Duration:

25 minutes

Year of
Presentation:

1992

Suggested
Presentations:

GIS-38, GIS-41

 

Semi-Automatic Revision of Topographic Maps from Satellite Images

Reference No:

GIS 34-3

he main aim of the project was to develop a prototype computer system to perform semi-automatic revision of 1:50,000 topographic map data in digital form by means of pattern recognition of satellite imagery of 10 and 20m resolution. The proposed revision result is inspected and can be manually corrected by an operator before the map data base is updated.

Lecturer:

  • Oysten B. Dick, Agricultural University of Norway

Suitability for
Level of
Instruction:

  • University (Undergraduate)
  • Advanced Research
  • Professional

Duration:

20 minutes

Year of
Presentation:

1992

Evaluation of Spot Data for Topographic Map Revision at the National Land Survey of Sweden

Reference No:

GIS 34-4

In 1990 the first map sheets of the new topographical map were published and produced by the National Land Survey of Sweden. The new map has an increased amount of feature types compared to earlier maps, including clearings. Introducing clearings in the new map required frequent revisions. The planned revision cycle is every 5 years for a few sets of objects, and every 10 years with a larger set of objects. After 20 years a new map is made with fieldwork. The question here is what type of image material (SPOT vs high-altitude aerial photographs) to use for the different revision types.

Lecturer:

  • Agneta Engberg, Swedish Space Corp.

Suitability for
Level of
Instruction:

  • University (Undergraduate)
  • Advanced Research
  • Professional

Duration:

9 minutes

Year of
Presentation:

1992

 

Accuracy of Superimposition

Reference No:

GIS 34-5

The presentation focuses on a study analyzing the precision of image superimposition in analytical plotters using mono systems.

Lecturer:

  • Dr. A. Van Voorden, University of Delvids, The Netherlands

Suitability for
Level of
Instruction:

  • University (Undergraduate)
  • Advanced Research
  • Professional

Duration:

24 minutes

Year of
Presentation:

1992

Suggested
Presentations:

GIS-29, GIS-44, GIS-45

 

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