Chapter 6 Photogrammetry

n Perspective (central) projection: aerial photographs vs. maps n Co-linearity equation n Photogrammetric orientation n Digital photogrammetry n Photo-interpretation Introduction

Photo-interpretation n Basic: tone/color n 2 nd order (geometric arrangements of tone/color): size, shape n 2 nd order (spatial arrangements of tone/color): texture, pattern n 3 rd order (positional elements): site, association n 3 rd order: height, shadow

Elements of Image Interpretation  Primary Elements  Black and White  Tone Color  Stereoscopic Parallax  Spatial Arrangement of Tone and Color  Size  Shape  Texture  Pattern  Based on Analysis of Primary Elements  Height  Shadow  Contextual Elements  Site  Association

Dot grid methodGrid square method Transect methodPolygon method Area measurement

References n Jensen, J.R., 2000, Remote Sensing of the Environment: An Earth Resource Perspective, Upper Saddle River, NJ: Prentice Hall, 544 pages. [Ch 5 pages ] Avery T. E. and G. L Berlin, 1992, Fundamentals of remote Sensing and Airphoto Interpretation, Fifth Edition, New York, Macmillan Publishing Company, 472 p. [pages 51-67] n Paine, D. E, 1981, Aerial Photography and Image Interpretation for Resource Management, New York, John Wiley and Sons, 571 p.

Mikail “ Modern Photogrammetry ” Wolf “ Photogrammetry ”

Questions 1. Discuss tilt and relief displacements based on collearity equations. 2. How do you think future developments in remote sensing and photogrammetry will affect each other and their integration with GIS?