GIS-45: PHOTOGRAMMETRY - SOFTCOPY II

Order No:

GIS-45

Total Length:

80 minutes



Relative Orientation Using Features

Reference No:

GIS 45-1

To perform photogrammetric relative orientation, a mathematical technique has been developed that requires lines or features digitized on different photos without the need to digitize the same image points. A test is presented for this method and its accuracy is evaluated. This method is also very useful in monoscopic digitizing and 3D robot vision.

Lecturer:

  • Riadh Munjy, Dept. of Civil & Surveying Engineering, California State University, Fresno, CA

Suitability for
Level of
Instruction:

  • University (Undergraduate)
  • Advanced Research
  • Professional

Duration:

13 minutes

Year of
Presentation:

1992

Suggested
Presentations:

GIS-29

 

Digital Matching Under the Presence of Extreme Scale Variations

Reference No:

GIS 45-2

This paper presents a digital photogrammetric strategy to identify and subsequently precisely match features whose images in a stereopair display significant scale differences. Experiments with both synthetic and real data are reported to demonstrate the performance of the presented strategy.

Lecturer:

  • Toni Schenk, Dept. of Geodetic Science & Surveying, Ohio State University, Columbus, OH

Suitability for
Level of
Instruction:

  • University (Undergraduate)
  • Advanced Research
  • Professional

Duration:

22 minutes

Year of
Presentation:

1992

Suggested
Presentations:

GIS-29

 

A Hierarchical Approach for Digital Image Compression

Reference No:

GIS 45-3

One of the important components of digital photogrammetric systems is image compression. Image compression is concerned with minimizing the number of bytes required to represent a digital image. In this paper a new hierarchical approach for image compression is presented. The radiometric and geometric qualities of the reconstructed images after compression by this hierarchical approach are investigated and compared with those of the JPEG (Joint Photographic Expert Group) algorithm. The JPEG algorithm achieves more compression than the hierarchical approach for the same reconstructed image quality; however, the hierarchical approach is about three times faster than the JPEG algorithm.

Lecturer:

  • Fayez Shanin, Dept. of Geodetic Science & Surveying, Ohio State University, Columbus, OH

Suitability for
Level of
Instruction:

  • University (Undergraduate)
  • Advanced Research
  • Professional

Duration:

18 minutes

Year of
Presentation:

1992

 

Experiences with Automatic Image Patch Matching

Reference No:

GIS 45-4

Softcopy systems effectively support multi-image operations because of their flexible multi-window based displaying capabilities and the relatively quick access to images they provide. Multi-image matching is a critical and therefore very important task in aerotriangulation. This presentation describes experiences on multi-image matching, in particular with determining approximations. After theoretical investigations, several solutions were implemented and their performance checked. All the experiments have been carried out in Intergraph's Image Station environment, as part of a larger project concerning the development of an automatic aerotriangulation system.

Lecturer:

  • Toni Schenk, Dept. of Geodetic Science & Surveying, Ohio State University, Columbus, OH

Suitability for
Level of
Instruction:

  • University (Undergraduate)
  • Advanced Research
  • Professional

Duration:

28 minutes

Year of
Presentation:

1992

 

[back]