Dataset Search
Sort By
Search results
742 results found
Fast Dynamic Programming for Elastic Registration of Curves
Data provided by National Institute of Standards and Technology
This is a software suite for computing optimal diffeomorphisms for elastic registration of curves. Algorithm adapt-DP is based on DP (dynamic programming) restricted to an adapting strip which is able to perform this computation in linear time.
Tags: dynamic programming,shape analysis,elastic registration,adapting strip,
Modified: 2024-02-22
Experimental test of the intrinsic dimensionality of Hounsfield unit measurements: the CT data
Data provided by National Institute of Standards and Technology
We present the data supporting "Experimental test of the intrinsic dimensionality of Hounsfield unit measurements" (In preparation). In this study, we passed 34 different substances in separate vials through a computed tomography (CT) scanner at 4 different voltages. At each voltage, we obtained 1824 images (in DICOM format) depicting a sequence of slices through the vials. All 7296 images are provided here.
Tags: x-ray computed tomography,medical phantom,Hounsfield unit,volume,shape,
Modified: 2024-02-22
In Situ Thermography of Single Scan Tracks Performed on Nickel Super Alloy 625 for the 2018 Additive Manufacturing Benchmark Test Series (AM-Bench 2018): Powder Bed Fusion Commercial Build Machine
Data provided by National Institute of Standards and Technology
These measurements were performed as part of the 2018 Additive Manufacturing Benchmark Test Series (AM-Bench), specifically supporting the melt pool geometry challenge (CHAL-AMB2018-02-MP) and cooling rate challenge (CHAL-AMB2018-02-CR).
Tags: additive manufacturing,benchmark tests,AMBench,AMBench 2018,powder bed fusion,nickel super alloy 625,IN625,thermography,temperature measurement,melt pool length,cooling rate,
Modified: 2024-02-22
Smartphone Data for Development of Indoor Localization Apps
Data provided by National Institute of Standards and Technology
The PerfLoc Prize Competition (https://perfloc.nist.gov) was developed by NIST during 2015-2017 and was run during 2017-2018. The Competition was concluded with a single winner on May 16, 2018. However, NIST believes the data collected for the PerfLoc Competition is still of value to the R&D community, because there is still room to develop better signal processing and data fusion algorithms that would fuse various types of smartphone data collected in this project to develop indoor localization apps with higher localization accuracy.
Tags: Indoor Localization; Smartphone Apps; Smartphone Location; Smartphone Sensor Data; Smartphone RF Received Signal; Wi-Fi; GPS/GNSS; Cellular Telephony; Accelerometer; Gyroscope; Magnetometer; Light Sensor; Barometer; Data Fusion Algorithms; Digital Signal Processing,
Modified: 2024-09-06
pyPRISM: A Computational Tool for Liquid State Theory Calculations of Macromolecular Materials
Data provided by National Institute of Standards and Technology
Polymer Reference Interaction Site Model (PRISM) theory describes the equilibrium spatial-correlations of liquid-like polymer systems including melts, blends, solutions, block copolymers, ionomers, liquid crystal forming polymers and nanocomposites. Using PRISM theory, one can calculate thermodynamic (e.g., second virial coefficients, Flory-Huggins interaction parameters, potentials of mean force) and structural (eg., pair correlation functions, structure factors) information for these macromolecular materials.
Tags: polymer,theory,liquid-state theory,python,polymer nanocomposite,polymer solution,X-ray scattering,neutron scattering,software,tool,computation,
Modified: 2024-02-22
Data and Results from Three Peg-in-Hole Experiments for Improving Insertion Tasks
Data provided by National Institute of Standards and Technology
A method was developed to reduce the point-based registration error by restoring the rigid body condition (RRBC method). Registration is the process of transforming one coordinate frame to another coordinate frame. The coordinate frame from which points are transformed is called the working frame and the coordinate frame to which points are transformed is called the destination frame. The RRBC method can be used to reduce the uncertainty of a hole location and thus, improve the success rate for insertion tasks.
Tags: assembly,insertion task,manufacturing,peg-in-hole experiments,rigid-body,registration,registration error,target registration error.,
Modified: 2024-02-22
Translator from Extended SysML to Physical Interaction and Signal Flow Simulation Platforms
Data provided by National Institute of Standards and Technology
The translator implements the SysML Extension for Physical Interaction and Signal Flow Simulation (SysPhS). It can generate Modelica or Simulink/Simscape files from SysML models extended according to the SysPhS specification. This dataset binary and source code for the translator, as well as a set of SysML models that can be translated into simulation models. Disclaimer: Certain commercial equipment, instruments, or materials are identified in this dataset to specify the experimental procedure adequately.
Tags: lumped-parameter simulation,model-based systems engineering,model transformation,SysML,
Modified: 2024-02-22
Geometries and material properties for simulating semiconductor patterned bridge defects using the finite-difference time-domain (FDTD) method
Data provided by National Institute of Standards and Technology
An in-house developed finite-difference time-domain (FDTD) code has been used to simulate certain patterned defects as found in the semiconductor industry. Intrinsic to FDTD is the establishment of a simulation domain, a 3-D matrix of some arbitrary size (X, Y, Z) comprised of smaller cells (in our case, cubic with side length x), with each cell indexed to a material (including the vacuum) to form the geometry.
Tags: finite-difference time-domain,FDTD,electromagnetic simulation,pattered defect inspection,defects,simulation input,
Modified: 2024-02-22
Dispersion and Burning Behavior of Hydrogen Released in a Full-Scale Residential Garage in the Presence and Absence of Conventional Automobiles Supplemental Video Materials
Data provided by National Institute of Standards and Technology
The supplemental materials reported here provide standard high-definition (HD), high-speed, and infrared videos of the 13 full-scale hydrogen dispersion and burning experiments. The videos show different burning dynamics of various hydrogen/air mixtures in the presence and absence of vehicles parked inside the garage.
Tags: fire safety,fuel-cell,garage,hydrogen,
Modified: 2024-02-22
Software to Process 3D Scanner Data
Data provided by National Institute of Standards and Technology
This software was developed per the ASTM E3125-17 documentary standard for 3D imaging systems. The software was written in MATLAB and Python and sample sphere data sets are provided.
Tags: dimensional metrology,3D scanners,point cloud,sphere segmentation,documentary standards,ASTM E3125,ASTM E3125-17,
Modified: 2024-02-22