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Ruth S. DeFries

University Professor
Department: 
Ecology, Evolution and Environmental Biology Department
Office: 
10th Floor Schermerhorn Ext. 1200, Amsterdam Avenue New York, NY 10027
Email: 
rd2402@columbia.edu
Phone: 
212-851-1647
Fax: 
212-854-8188
Appointments
  • Co-director, Undergraduate Program in Sustainable Development
  • Member, Faculty Steering Committee, Columbia Global Centers | Mumbai
Biography

Ruth DeFries’ research examines human transformation of the landscape and its consequences for climate, biogeochemical cycling, biodiversity, and other ecosystem services that make our planet habitable. The work is based on the premise that land use change involves tradeoffs between human necessities such as food and unintended environmental consequences such as greenhouse gas emissions and habitat loss. A particular focus is tropical deforestation and its impacts on atmospheric carbon emissions and conservation. The research analyzes land use changes over broad scales through the lens of satellite observations. She is actively involved in linking scientific information into policy decisions.

Research & Other Works
Report
DisCo: Displays that Communicate
Report
Phasor Imaging: A Generalization of Correlation-Based Time-of-Flight Imaging
Report
Focal Sweep Camera for Space-Time Refocusing
Article
Multiplexed Illumination for Scene Recovery in the Presence of Global Illumination
Article
Video from a Single Coded Exposure Photograph using a Learned Over-Complete Dictionary
Article
Diffuse Structured Light
Article
Micro Phase Shifting
Report
When Does Computational Imaging Improve Performance?
Report
Aperture Evaluation for Defocus Deblurring and Extended Depth of Field
Report
Parametric Feature Detection
Report
A Theory of Pattern Rejection
Report
Automatic Generation of RBF Networks
Report
Stereo in the Presence of Specular Reflection
Report
Computational Cameras: Approaches, Benefits and Limits
Report
Projection Volumetric Display using Passive Optical Scatterers
Report
Speech Enabled Avatar from a Single Photograph
Report
A Framework for 3D Pushbroom Imaging
Report
A General Framework for Designing Catadioptric Imaging and Projection Systems
Report
Jitter-Camera: High Resolution Video from a Low Resolution Detector
Report
Blurring of Light Due to Multiple Scattering by the Medium: A Path Integral Approach
Report
A Theory of Catadioptric Image Formation
Report
Non-Single Viewpoint Catadioptric Cameras: Geometry and Analysis
Report
Reflectance and Texture of Real-World Surfaces
Report
Reflectance and Texture of Real-World Surfaces
Report
Time-Varying Textures
Report
The Appearance of Human Skin
Report
Pararover: A Remote Controlled Vehicle with Omnidirectional Sensors
Report
Polycameras: Camera Clusters for Wide Angle Imaging