GEOG 892
Geospatial Applications of Unmanned Aerial Systems (UAS)

Lesson 7 Introduction


Welcome to Lesson 7! In this lesson, you will understand and be familiar with the photogrammetric process, the processing systems, and data generation from an image-based UAS. Most applications of the UAS today include one form or another of a camera system (video or still camera) from which different interpretations and therefore different applications are evolved. You will also develop understanding of processes such as aerial triangulation and ortho rectification, which are the backbone of any image processing facility. The photogrammetric textbook Elements of Photogrammetry with Applications in GIS will be your companion, beside the lesson notes, in understanding the topic.

Lesson Objectives

At the successful completion of this lesson, you should be able to:

  • understand the concept of sensor and product geolocation;
  • understand the concept of direct geo-referencing;
  • understand the concept of aerial triangulation;
  • outline complete UAS data processing workflow;
  • distinguish between different products obtainable from different UAS payload sensors.

Lesson Readings

  • Chapters 1, 11, 16, and sections 17-1 and 17-9 of Chapter 17 of textbook 3: Wolf, et al., Elements of Photogrammetry with Applications in GIS

Lesson Activities

  • Complete the Lesson 7 Quiz.
  • Work on your final project report and presentation. (Due next week.)
  • Practice generating DSM and ortho mosaic at different GSDs using Pix4D and evaluate the differences in qualities.
  • Continue working on your COA Application and the Final Project Report.