Symposium Program

Technological advances in the 20th century enabled many countries to systematically collect aerial photographs of their territories. Over the past decade, these rich image collections have been digitized and made public. Because these photographs were often acquired in stereo mode at high spatial resolution, they can be used in 3D modeling and 3D change detection over time.

However, despite their merits, historical imagery remains underexploited in spatial analysis and research. This is often due to the poor quality of the archived analogue films and the lack of automated processing methods. In this talk, I will present our experiences in processing historical photography. The first part will focus on aerial cases, and in the second part I will discuss historical satellite sensors, notably the Corona KH-H satellite. Results from three case-studies, on landslide, earthquake and glacier volume mapping, will also be presented.