Sugarcane production is a source of varied opinions and conflicting realities. While on the one hand it is contributing both to the takeover of farmland and to minor clearing of rainforest areas in South America, particularly Brazil, it also has the potential to serve as a renewable source of sustainable […]
Cameron Windham
Spatial Analysis
ASTER and the Spectral Recipe for Finding Gold
In the last section of this series, we took a look at both the ASTER sensor and the vast library of spectral profiles built as a standard reference for multi-spectral analysis and material classification. In this article, we will take a look at land cover investigations through spectral unmixing, which is […]
GIS Data
The ASTER Spectral Library – a True Monument of Remote Sensing Data
In the first part of this series, Cameron Windham from Apollo Mapping takes a look at the nuts and bolts of the widely-used ASTER Spectral Library.
Spatial Analysis
The Rainforest Magician – Optical Illusions and the Spectra of the Canopy
Cameron Windham from Apollo Mapping discusses the the findings of a recent paper published in Nature about a sun-sensor geometry arrangement being the cause for historically high readings of green-ness in the rainforest canopy.
Spatial Analysis
Shadows and Angles: Measuring Object Heights from Satellite Imagery
Because of the wonderful metadata that comes with satellite images, shadows can be employed to estimate the height of the objects which cast them.
GIS Data
The Role of High-Resolution Imagery and GIS in Flood Relief Efforts in Colorado
With the recent flooding events that swept the western United States, a lot of attention has turned towards assessing flood-related damages in order to assign and focus relief efforts, and towards mitigating future damages by identifying and fortifying high-risk regions . Of particular utility to these interests has been high-resolution […]