Developing monocular visual pose estimation for arctic environmentsStephen Williams; Ayanna M. Howard · 2010

Calibration and Validation of Earth-Observing Sensors Using Deployable Surface-Based Sensor NetworksWilliams, Stephen; Parker, Lonnie T.; Howard, Ayanna M. · IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing · 2010

[IEEE 2008 IEEE International Conference on Robotics and Automation (ICRA) - Pasadena, CA, USA (2008.05.19-2008.05.23)] 2008 IEEE International Conference on Robotics and Automation - A single camera terrain slope estimation technique for natural arctic environmentsWilliams, Stephen; Howard, Ayanna M. · 2008