Software Listing: Splines

Demonstrates the use of thin plate splines based warping for temporal interpolation..

  • Platform: Matlab, Scripts

Autodesk T-Splines Plug-in for Rhino was developed as a powerful and useful Rhinoceros plugin.

Autodesk T-Splines Plug-in for Rhino can be used by CAD designers to easily build quality CAD models.

Users can now make use of this reliable tool to quickly create the designs they want.


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  • Platform: Windows 7, Windows 8, WinOther, WinVista

Convert B-Spline curves contained in DXF files into arcs. So it will be possible to further process the dxf files and use it with your CNC machine. The program reads existing DXF files and writes the result into a new DXF file. You can specify the maximum deviation of the arc polyline curve from the original B-Spline curve. So you can decide if you want to create more arcs and get an more exact result or if you want less arcs and a curve which does not fit perfectly. For example to reduce the working time for your CNC machine. You can also write both, the splines and the arcs to the DXF file so that you can compare both curves.

  • Platform: Win2000, Win7 x32, Win7 x64, WinOther, WinVista, WinVista x64

The package comprises of a graphical utility to place uniform B-spline control points and see how the B-spline is redrawn as control points or control point weights are adjusted, and functions to estimate B-splines with known knot vector, given a set of noisy data points either with known or unknown associated parameter values. As regards the interactive interface, the user is shown a figure window with axes in which to choose control points of a uniform B-spline. As points are placed in the axes, the B-spline of specified order is drawn progressively. The user may terminate adding control points by pressing ENTER or ESC, or may place the last control point with a right mouse button click.

  • Platform: Matlab, Scripts

Splines library is (currently) a Windows DLL for generating a variety of spline curves. The code is mostly vanilla C code.
Splines Library License - GNU Library or Lesser General Public License (LGPL).

  • Platform: WinOther

Java Library in order to implement Splines.
Oriented-Object Splines Library License - GNU General Public License (GPL).

  • Platform: WinOther

Data Curve Fit Creator Add-in is an easy-to-use data analysis add-in for Microsoft Excel. It adds curve fitting, interpolation, and data smoothing functions to Excel. Curve fitting functions include polynomial fits and a versatile local regression (loess) function. Interpolations include linear, cubic spline, bessel and monotonic \'constrained\' splines, as well as a \'flexible spline\' that allows you to specify the slope at each data point. Cubic spline function coefficients and slope can also be returned. Data smoothing functions include moving average, median filter, and a Gaussian smoothing filter.

  • Platform: Win2000, WinXP, Win7 x32, Win7 x64, Windows 8, Windows 10, WinServer, WinOther, Windows2000, Windows2003, Windows Server 2012, Windows Tablet PC Edition 2005, Windows Media Center Edition 2005, WinVista, Windows Vista, WinVista x64

Terrain for AutoCAD is a terrain modeling plug-in for AutoCAD. This plug-in gives AutoCAD the ability to create a terrain mesh from a set of unordered points, lines, polylines and splines. The terrain mesh is created as a Delaunay Triangulation, which is regarded as the best method to create a terrain mesh from unorganized point data. Terrain for AutoCAD can also import a set of points from a text file containing point coordinate data along with point numbers and point descriptions. Terrain for AutoCAD is powered by PointLib, a state of the art terrain modeling library developed by SYCODE. Terrain for AutoCAD is designed to be extremely user friendly and easy to use.

  • Publisher: SYCODE
  • Date: 16-05-2006
  • Size: 2396 KB
  • Platform: Win2000, Windows Server, WinOther

Geometric designs and strength checks of shaped connections of shafts with hubs. Application is developed in MS Excel, is multi-language and supports Imperial and Metric units and solves the following main tasks:
- Design of a connection with parallel side keys.
- Design of a connection with Woodruff's keys.
- Design of a connection with straight-sided splines.
- Design of a connection with involute splines.
- Strength check of designed couplings.
- The application includes a table of keys and splines according to ISO, SAE, DIN, BS, JIS and CSN.
- Support of 2D CAD systems (AutoCAD, AutoCAD LT, IntelliCAD, Ashlar Graphite, TurboCAD).

  • Publisher: MITCalc
  • Date: 05-05-2011
  • Size: 1605 KB
  • Platform: Win2000, WinOther

With cad2octree you can generate an octree-structure from a surface model in DXF format. The octree will kept in preorder traversion bit-stream (POT). It will generate octree structure from rigid bodies, which surfaces are polygons cubic B-splines..

  • Platform: Linux, Unix, WinOther

Cusp is a simple 2D spline editing tool for free-form bezier splines or curves calculated by cubic spline interpolation. Its main usage is to create 2D motion paths for simple games..

  • Platform: Linux, Mac OS X, WinOther

einspline is a C library for the creation and evaluation of interpolating cubic basis splines (B-splines) in 1D, 2D, and 3D. It supports both uniform and nonuniform meshes, single and double precision, and real and complex data..

  • Platform: Linux, Unix

Plantra-Trajectory Planning is a software to rebuild surfaces from cloud points, featuring shaded 3D visualization and path planning for robotics paths. It uses Voronoi diagram, Cyrus-Beck clipping, Delaunay triangulation and B-Splines..

  • Platform: WinOther

Update: Create objects large 30 Million triangles from kilobyte large tiny short scripts having rotated coordinate systems, points, splines, named or instructed to be found surfaces....

  • Platform: WinOther

wxNurbs is a wxWindows based toolkit to design NURBS' curves and surfaces (Non-Uniform Rational B-Splines)..

  • Platform: WinOther

This package contains a set of tools that allows to deform in real-time points and images using the Moving Least Squares algorithms. This is a fast technique to get good image deformations without using the computational expansive techniques provided by the thin-plates splines algorithms. The algorithm was published in the paper "Image Deformation Using Moving Least Squares" by Scott Schaefer, Travis McPhail, Joe Warren.

  • Platform: Matlab, Scripts

tensorRelightingDemo.m demonstrates the use of the Cartesian Tensor basis for facial Apparent BRDF (ABRDF) estimation and subsequent relighting. Given a few images of a face under different point source illuminations, the included code for ABRDF estimation can interpolate and extrapolate them to generate new images. Please cite the following paper if you find this code useful: Ritwik Kumar, Angelos Barmpoutis, Arunava Banerjee, Baba C. Vemuri, 'Non-Lambertian Reflectance Modeling and Shape Recovery of Faces using Tensor Splines', IEEE Transactions on Pattern Analysis and Machine Intelligence (PAMI), 2009.

  • Platform: Matlab, Scripts

fastBSpline - A fast, lightweight class that implements non-uniform B splines of any order Matlab's spline functions are very general. This generality comes at the price of speed. For large-scale applications, including model fitting where some components of the model are defined in terms of splines, such as generalized additive models, a faster solution is desirable. The fastBSpline class implements a lightweight set of B-spline features, including evaluation, differentiation, and parameter fitting. The hard work is done by C code, resulting in up to 10x acceleration for evaluating splines and up to 50x acceleration when evaluating of spline derivatives.

  • Platform: Matlab, Scripts

Read and Write Wavefront OBJ geometry and MTL files. A Wavefront Geometry Object file is supported by many 3D programs, it looks like: v 0.000000 2.000000 0.000000 v 0.000000 0.000000 0.000000 v 2.000000 0.000000 0.000000 v 2.000000 2.000000 0.000000 % Vertices Coordinates 4 f 1 2 3 4 % Faces 1 The function read_wobj allow Wavefront object files including material MTL files to be read into a Matlab structure. The function write_wobj exports a Matlab structure to an OBJ file. It doesn't matter if the object file contains splines or polygon based geometry, it reads and writes almost all .obj files.

  • Platform: Matlab, Scripts

B-splines is a natural signal representation for continous signals, where many continous-domain operations can be carried out exactly once the B-spline approximation has been done. The B-spline estimation procedure in this toolbox using allpole filters is based on the classic papers by M. Unser and others [1,2,3], it allows very fast estimation of B-spline coefficients when the sampling grid is uniform. Evaluation/interpolation is also a linear filter operation. The toolbox has two layers; a set of functions for the fundamental operations on polynomial B-splines, and an object-oriented wrapper which keeps track of the properties of a spline signal and overload common operators.

  • Platform: Matlab, Scripts

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