Paul Bryan

A Robust Surface Matching Technique for Integrated Monitoring of Coastal Geohazards

At the dynamic coastal fringe, numerous processes interact with local morphology. In soft-cliff environments, this can often lead to the occurrence of coastal geohazards. These can pose a major threat to property and cultural heritage, and an effective monitoring strategy is therefore essential. While contemporary monitoring techniques have been applied, these are often unsuitable in isolation. This paper presents an integrated approach, with the development of weighted surface matching software enabling reliable dataset fusion and multi-temporal change detection, even where significant surface differences exist. Evaluation of this approach is presented and discussed.

Photogrammetric survey of the Adivino Pyramid at the Maya archaeological site of Uxmal, Yucatan, Mexico

In 1999, the Adivino Pyramid, located at the Maya archaeological site of Uxmal in the state of Yucatan, Mexico was documented using close-range stereo photogrammetry This paper summarizes the process of photogrammetric survey, the historical context that led to the use of close-range photogrammetry, and highlights the adoption of this technology by the Autonomous University of Yucatan (UADY) in Merida, Yucatan to support heritage preservation in Mexico and other Latin American countries.

Using Geospatial Imaging Techniques to Reveal and Share the Secrets of Stonehenge

Stonehenge is perhaps the most famous prehistoric monument in the world. Begun as a simple earthwork enclosure, it was built in several stages with the unique lintelled stone circle being erected in the Neolithic period around 2,500 BC. Today Stonehenge, together with Avebury and other associated sites, forms the heart of a World Heritage Site (WHS) with a unique and dense concentration of outstanding prehistoric monuments. In 2011 English Heritage embarked on a new survey of the monument using a range of geospatial imaging techniques. Undertaken by the Greenhatch Group, a commercial survey company based near Derby, they used a combination of laser scanning and photogrammetric approaches to generate the scale and detailed level of outputs required by English Heritage. This paper will describe the background to this project and its context within previous survey activities at the site. It will explain the data acquisition technology and processes undertaken on site, the datasets derived from post-processin...