Sharing and cooperation in geo-information technology

Aziz, T. Lukman

Bibliographic data

Monograph

Persistent identifier:: 856479470

Author:: Aziz, T. Lukman

Title:: Sharing and cooperation in geo-information technology

Sub title:: ISPRS Commission VI Symposium, April 15 - 17, 1999, Bandung, Indonesia

Scope:: 1 Online-Ressource (130 Seiten)

Year of publication:: 1999

Place of publication:: London

Publisher of the original:: RICS Books

Identifier (digital):: 856479470

Illustration:: Illustrationen, Diagramme

Language:: English

Usage licence:: Attribution 4.0 International (CC BY 4.0)

Publisher of the digital copy:: Technische Informationsbibliothek Hannover

Place of publication of the digital copy:: Hannover

Year of publication of the original:: 2016

Document type:: Monograph

Collection:: Earth sciences

Chapter

Title:: WG VI/3: INTERNATIONAL COOPERATION AND TECHNOLOGY TRANSFER

Write comment:: Der Aufsatz "Promotion Of The General Understanding And Improvement Of Public Relations, [...] ist im Original nicht enthalten.

Document type:: Monograph

Structure type:: Chapter

Chapter

Title:: PROCEDURES OF CORRECTION OF THE GEOMETRY DISTORSIONS FOR DIGITAL IMAGES. F. Barison, A. Guamieri, A. Vettore

Document type:: Monograph

Structure type:: Chapter

International Archives of Photogrammetry and Remote Sensing. Vol. XXXII, Part 6. Bandung-lndonesia 1999 57 PROCEDURES OF CORRECTION OF THE GEOMETRY DISTORSIONS FOR DIGITAL IMAGES F. Barison A. Guamieri, A. Vettore Dip. Costruzioni e Trasporti - Università di Padova - Italy Dip. Territorio TESAF - Università’ di Padova - Italy Via Marzolo 9-35100 Padova AGRIPOLIS - Statale Romea 16 35020 Legnaro (Padova) Phone +39-049-8275580 , fax +39-049-8372713 e-mail: vettoan@ux 1. unipd, i t ABSTRACT Since a few years digital fotocameras have widely spread on the market, principally because of their price, quality image improvement and easy of use. In order to extract from these digital images reliable 3D informations regarding objects position and dimension, both the exact knowledge about perspective and dimensional relations between image and scene, and the knowledge about the geo-metric distortions parameters are needed. Therefore, the aim of this work was to develope an alternative method to estimate the parameters of the major forms of geometric distortions, i.e. radial, tangential, decentering and thin-prism. The proposed method, based on Tsai calibration algorithm and Leveberg-Marquardt non linear optimi-zation procedure, starts with a first estimate of inner and exterior orientation parameters in absence of distortion, taking into account only center image points. Then a non linear estimate of all digital camera parameters is carried out, taking into account all image points in order to compute the geo-metric distortions as well. The method has been implemented in such a way to allow a full camera calibration or a compu-tation of the exterior orientation parameters only, using inner orientation and distortion parameters determined from previous full calibration. This approach can be useful if only an estimate of new targets positions is required, in which the inner and distortion parameters are already given.

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