Linder Wilfried. Digital Photogrammetry. A Practical Course

2nd Edition. — Springer, 2006. — 214 p.Potential readers/users are students of Photogrammetry, Geodesy, Geography and other sciences, but also all who are interested in this topic. No prior knowledge is necessary, except the handling of standard PCs. Theory is presented true to the motto "as little as possible, but as much as necessary".The main part of the book contains several tutorials. In increasing complexity, accompanied by texts explaining further theory, the reader can proceed step by step through the particular working parts. Most of the standard work in Digital Photogrammetry is shown and trained for example scanning, image orientation, mono and stereo plotting, aerial triangulation measurement (manual and automatic), block adjustment, automatic creation of surface models via image matching, creation of ortho images and mosaics, and others. Not only standard situations are dealt with but also more complex ones, such as unknown camera data, extreme relief or areas with very low contrast. Examples of both aerial and close-range photogrammetry present the power of these type of measurement techniques.The software is not limited to the example data included but may be used for personal projects. Part of the book comprises a complete description of the software.Basic idea and main task of photogrammetry. If you want to measure the size of an object, let’s say the length, width and height of a house, then normally you will carry this out directly at the object. Now imagine that the house didn’t exist anymore – it was destroyed, but some historic photos exist. Then, if you can determine the scale of the photos, it must be pos- ble to get the desired data. Of course you can use photos to get information about objects. This kind of - formation is different: So, for example, you may receive qualitative data (the house seems to be old, the walls are coloured light yellow) from photo interpre- tion, or quantitative data like mentioned before (the house has a base size of 8 by 6 meters) from photo measurement, or information in addition to your background knowledge (the house has elements of the “art nouveau” style, so may be c- th structed at the beginning of the 20 century), and so on.Preface 1st edition.
Preface 2nd edition.
Introduction.
Basic idea and main task of photogrammetry.
Why photogrammetry?
Image sources: Analogue and digital cameras.
Digital consumer cameras.
Short history of photogrammetric evaluation methods.
Geometric principles 1: Camera position, focal length.
Geometric principles 2: Image orientation.
Geometric principles 3: Relative camera positions (stereo).
Some definitions.
Length and angle units.
A typical workflow in photogrammetry.
Included software and data.
Hardware requirements, operating system.
Image material.
Overview of the software.
Installation.
Additional programmes, copyright, data.
General remarks.
Software versions, support.
Scanning of photos.
Scanner types.
Geometric resolution.
Radiometric resolution.
Some practical advice.
Import of the scanned images.
Example 1: A single model.
Project definition.
Orientation of the images.
Model definition.
Stereoscopic viewing.
Measurement of object co-ordinates.
Creation of DTMs via image matching.
Ortho images.
Example 2: Aerial triangulation.
Aerial triangulation measurement (ATM).
Block adjustment with BLUH.
Mosaics of DTMs and ortho images.
Example 3: Some special cases.
Scanning aerial photos with an A4 scanner.
Interior orientation without camera parameters.
Images from a digital camera.
An example of close-range photogrammetry.
Some remarks about lens distortion.
A view into the future: Photogrammetry in 2020.
Programme description.
Some definitions.
Basic functions.
Aims and limits of the programme.
Operating the programme.
Buttons in the graphics windows.
File handling.
Pre programmes.
Aerial triangulation measurement (ATM).
Processing.
Display.
Aerial triangulation with BLUH.
Appendix.
Codes.
GCP positions for tutorial 2.
Technical data of digital camera chips.
References.
Glossary.
List of figures and formulas.
Index.