| Titre : |
Performance of tie-point extraction in automatic aerial triangulation |
| Type de document : |
Chapitre/Contribution |
| Auteurs : |
Christian Heipke, Auteur |
| Editeur : |
Francfort sur le Main : Institut für Angewandte Geodäsie |
| Année de publication : |
December 1998 |
| Collection : |
Official Publication OEEPE, ISSN 0257-0505 num. 35 |
| Importance : |
pp 125 - 183 |
| Langues : |
Anglais (eng) |
| Descripteur : |
[Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] aérotriangulation numérique
[Termes IGN] extraction automatique
[Termes IGN] points homologues
|
| Résumé : |
(Auteur) The European Organisation for Experimental Photogrammetric Research (OEEPE) and the International Society for Photogrammetry and Remote Sensing (ISPRS) have carried out a test on the performance of tie point extraction in automatic aerial triangulation (AAT). The aims of the test were to investigate the geometrical block stability, the accuracy of the tie points and the derived orientation parameters, and the limitations of existing commercial and experimental software systems. In order to separate the essentially new aspect of digital processing, namely automation, from conventional issues of aerial triangulation, control information was not assessed, and the test blocks to be processed had an arbitrary block datum. The Chair for Photogrammetry and Remote Sensing, Technische Universität München acted as pilot centre for the test. In early 1997 various small blocks of different scene content were distributed to interested participants. Their task was to generate tie points in an automatic way. The results of 21 participants, including all major software vendors of AAT and users of their systems, have been analysed and are presented in this report. Given a large number of tie points per image has been extracted, the blocks were found to be mostly stable. Under good conditions (open, flat terrain) an accuracy for the tie points of up to 2.2 mm corresponding to 0. 11 pixel could be reached, while under less favourable conditions, the result was 49 mm or 0.20.3 pixel. These figures were found to be very similar for the different systems. In mountainous and forested areas, some systems failed to produce acceptable results. Reliable self control is a feature missing in all systems to date. Also, it seems that considerable experience is required to properly run the systems. |
| Numéro de notice : |
H1998-009 |
| Affiliation des auteurs : |
non IGN |
| Thématique : |
IMAGERIE |
| Nature : |
Chapître / contribution |
| Permalink : |
https://documentation.ensg.eu/index.php?lvl=notice_display&id=75596 |
Performance of tie-point extraction in automatic aerial triangulation [Chapitre/Contribution] / Christian Heipke, Auteur . - Francfort sur le Main : Institut für Angewandte Geodäsie, December 1998 . - pp 125 - 183. - ( Official Publication OEEPE, ISSN 0257-0505; 35) . Langues : Anglais ( eng) | Descripteur : |
[Vedettes matières IGN] Photogrammétrie numérique
[Termes IGN] aérotriangulation numérique
[Termes IGN] extraction automatique
[Termes IGN] points homologues
|
| Résumé : |
(Auteur) The European Organisation for Experimental Photogrammetric Research (OEEPE) and the International Society for Photogrammetry and Remote Sensing (ISPRS) have carried out a test on the performance of tie point extraction in automatic aerial triangulation (AAT). The aims of the test were to investigate the geometrical block stability, the accuracy of the tie points and the derived orientation parameters, and the limitations of existing commercial and experimental software systems. In order to separate the essentially new aspect of digital processing, namely automation, from conventional issues of aerial triangulation, control information was not assessed, and the test blocks to be processed had an arbitrary block datum. The Chair for Photogrammetry and Remote Sensing, Technische Universität München acted as pilot centre for the test. In early 1997 various small blocks of different scene content were distributed to interested participants. Their task was to generate tie points in an automatic way. The results of 21 participants, including all major software vendors of AAT and users of their systems, have been analysed and are presented in this report. Given a large number of tie points per image has been extracted, the blocks were found to be mostly stable. Under good conditions (open, flat terrain) an accuracy for the tie points of up to 2.2 mm corresponding to 0. 11 pixel could be reached, while under less favourable conditions, the result was 49 mm or 0.20.3 pixel. These figures were found to be very similar for the different systems. In mountainous and forested areas, some systems failed to produce acceptable results. Reliable self control is a feature missing in all systems to date. Also, it seems that considerable experience is required to properly run the systems. |
| Numéro de notice : |
H1998-009 |
| Affiliation des auteurs : |
non IGN |
| Thématique : |
IMAGERIE |
| Nature : |
Chapître / contribution |
| Permalink : |
https://documentation.ensg.eu/index.php?lvl=notice_display&id=75596 |
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OEEPE survey on 3D-city models (1998)
Performance of tie-point extraction in automatic aerial triangulation (December 1998)
