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Briefs: Physical Sciences
This innovation addresses challenges in lidar imaging, particularly with the detection scheme and the shapes of the detected signals. Ideally, the echoed pulse widths should be extremely narrow to resolve fine detail...
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Articles: Imaging
New Video Documents Three-Year Trek by Mars Rover
A new video compiles 309 images taken by NASA’s Mars Exploration Rover Opportunity, providing an historic record of a three-year trek that totaled about 13 miles across a Martian plain pocked with smaller craters. While Opportunity was traveling from Victoria crater to Endeavour crater, between...
Briefs: Information Technology
Surface Modeling to Support Small-Body Spacecraft Exploration and Proximity Operations
In order to simulate physically plausible surfaces that represent geologically evolved surfaces, demonstrating demanding surface-relative guidance navigation and control (GN&C) actions, such surfaces must be made to mimic the geological processes themselves....
Briefs: Software
Coastal On-line Assessment and Synthesis Tool 2.0
COAST (Coastal On-line Assessment and Synthesis Tool) is a 3D, open-source Earth data browser developed by leveraging and enhancing previous NASA open-source tools. These tools use satellite imagery and elevation data in a way that allows any user to zoom from orbit view down into any place on...
Briefs: Information Technology
Fast Image Texture Classification Using Decision Trees
Texture analysis would permit improved autonomous, onboard science data interpretation for adaptive navigation, sampling, and downlink decisions. These analyses would assist with terrain analysis and instrument placement in both macroscopic and microscopic image data products. Unfortunately,...
Briefs: Software
Image Segmentation, Registration, Compression, and Matching
A novel computational framework was developed of a 2D affine invariant matching exploiting a parameter space. Named as affine invariant parameter space (AIPS), the technique can be applied to many image-processing and computer-vision problems, including image registration, template...
Briefs: Energy
CgWind is a new, high-fidelity simulation tool designed to meet the modeling requirements of advanced wind energy resources. These new resources, targeting 20% of the US...
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Briefs: Information Technology
Multi-Modal Image Registration and Matching for Localization of a Balloon on Titan
A solution was developed that matches visible/IR imagery aboard a balloon in Saturn’s moon Titan’s atmosphere to SAR (synthetic aperture radar) and visible/IR data acquired from orbit. A balloon in Titan’s atmosphere must be able to localize itself autonomously...
Briefs: Information Technology
Visual SLAM Using Variance Grid Maps
An algorithm denoted “Gamma-SLAM” performs further processing, in real time, of preprocessed digitized images acquired by a stereoscopic pair of electronic cameras aboard an off-road robotic ground vehicle to build accurate maps of the terrain and determine the location of the vehicle with respect to the...
Briefs: Information Technology
An Augmentation of G-Guidance Algorithms
The original G-Guidance algorithm provided an autonomous guidance and control policy for small-body proximity operations that took into account uncertainty and dynamics disturbances. However, there was a lack of robustness in regards to object proximity while in autonomous mode. The modified G-Guidance...
Briefs: Software
Planetary Image Geometry Library
The Planetary Image Geometry (PIG) library is a multi-mission library used for projecting images (EDRs, or Experiment Data Records) and managing their geometry for in-situ missions. A collection of models describes cameras and their articulation, allowing application programs such as mosaickers, terrain generators,...
Briefs: Software
Mars Terrain Generation
A suite of programs for the generation of disparity maps from stereo image pairs via correlation, and conversion of those disparity maps to XYZ maps, has been updated. This suite implements an automated method of deriving terrain from stereo images for use in the ground data system for in-situ (lander and rover) cameras....
Briefs: Information Technology
Predicting Long-Range Traversability From Short-Range Stereo-Derived Geometry
Based only on its appearance in imagery, this program uses close-range 3D terrain analysis to produce training data sufficient to estimate the traversability of terrain beyond 3D sensing range. This approach is called learning from stereo (LFS). In effect, the software...
Briefs: Physical Sciences
JMISR INteractive eXplorer
MISR (Multi-angle Imaging SpectroRadiometer) INteractive eXplorer (MINX) is an interactive visualization program that allows a user to digitize smoke, dust, or volcanic plumes in MISR multiangle images, and automatically retrieve height and wind profiles associated with those plumes. This innovation can perform 9-camera...
Briefs: Software
The Autonomous Exploration for Gathering Increased Science System (AEGIS) provides automated targeting for remote sensing instruments on the Mars Exploration Rover (MER) mission, which at...
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Briefs: Physical Sciences
This software has been designed to detect water bodies that are out in the open on cross-country terrain at mid- to far-range (approximately 20–100 meters), using imagery acquired from a stereo pair of...
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Articles: Test & Measurement
The NASA World Wind Java computer program developed at Ames Research Center at Moffett Field, CA, has won NASA’s 2009 Software of the Year award. Software engineers at Ames created the NASA World Wind...
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Briefs: Physical Sciences
Simplified Vicarious Radiometric Calibration
A measurement-based radiance estimation approach for vicarious radiometric calibration of spaceborne multispectral remote sensing systems has been developed. This simplified process eliminates the use of radiative transfer codes and reduces the number of atmospheric assumptions required to perform sensor...
Briefs: Physical Sciences
A machine-vision system capable of detecting obstacles large enough to damage or trap a robotic vehicle is undergoing development. The system includes (1) a pattern generator that...
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Briefs: Physical Sciences
Robust mud detection is a critical perception requirement for Un manned Ground Vehicle (UGV) auton omous offroad navigation. A military UGV stuck in a mud body during a mission may have to be sacrificed or rescued,...
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Briefs: Mechanical & Fluid Systems
The space-frame lunar lander is a conceptual spacecraft or spacecraftlike system based largely on the same principles as those of the amorphous rover and the space-frame antenna described in the two immediately...
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Briefs: Mechanical & Fluid Systems
A proposed mobile robot, denoted the amorphous rover, would vary its own size and shape in order to traverse terrain by means of rolling and/or slithering action. The amorphous rover was conceived as a robust, lightweight...
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Briefs: Information Technology
Stream Flow Prediction by Remote Sensing and Genetic Programming
A genetic programming (GP)-based, nonlinear modeling structure relates soil moisture with synthetic-apertureradar (SAR) images to present representative soil moisture estimates at the watershed scale. Surface soil moisture measurement is difficult to obtain over a large area due to a...
Briefs: Mechanical & Fluid Systems
Teamed Robots for Exploration and Science in Steep Areas (TRESSA) is a system of three autonomous mobile robots that cooperate with each other to enable scientific exploration of steep...
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Briefs: Software
Integrated Modeling of Spacecraft Touch-And-Go SamplingIntegrated Modeling of Spacecraft Touch-And-Go Sampling
An integrated modeling tool has been developed to include multi-body dynamics, orbital dynamics, and touch-and-go dynamics for spacecraft covering three types of end- effectors: a sticky pad, a brush-wheel sampler, and a pellet gun.
Briefs: Software
A method of automated detection of negative obstacles (potholes, ditches, and the like) ahead of ground vehicles at night involves processing of imagery from thermal-infrared cameras...
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Briefs: Information Technology
The term “System for Mobility and Access to Rough Terrain” (SMART) denotes a theoretical framework, a control architecture, and an algorithm that implements the framework and architecture, for enabling a...
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Briefs: Information Technology
An automated procedure has been developed to derive relevant factors, which can increase the ability to produce objective, repeatable methods for determining aerodynamic surface...
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Briefs: Physical Sciences
Two methods of increasing the effectiveness of three-dimensional (3D) wavelet-based compression of hyperspectral images have been developed. (As used here, “images” signifies...
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