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Tristan Ursell


University of Oregon

19 total contributions since 2012

Professional Interests: physics, biophysics, genetic algorithms, image processing, stochastic simulations

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Submitted


Generate Random Numbers from a 2D Discrete Distribution
Random numbers from any 2D discrete probability distribution, at any resolution.

10 months ago | 11 downloads |

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streamfun
A fast(er) and low overhead alternative to the stream2 function.

1 year ago | 1 downloads |

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Active Figure Zoom for Selecting Points
Select points at a user-specified zoom level that moves around the image as you click.

3 years ago | 5 downloads |

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Submitted


Adaptive Colormap Function Creates a Colormap Specific to Data
Easily design and fit a colormap to the values in your data!

3 years ago | 4 downloads |

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Connect Randomly Ordered 2D Points into a Minimal Nearest-Neighbor Closed Contour
Connects randomly ordered 2D points into a minimal nearest neighbor contour.

3 years ago | 19 downloads |

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1D Non-derivative Peak Finder
Up-sample and filter noisy data to find peaks without using derivatives.

3 years ago | 5 downloads |

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Frechet Distance Calculator
Estimate the similarity between curves in space using the scalar Frechet Distance.

3 years ago | 23 downloads |

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Submitted


Find Image Extrema
Find local maxima, local minima, saddle points, and flat regions in an image.

3 years ago | 11 downloads |

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Image Noise Reduction by Local Statistics
Reduce image noise by measuring local pixel statistics and remapping intensities.

4 years ago | 8 downloads |

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Connected Component Analysis on an Undirected Graph
Connected component analysis on undirected graphs, with thresholding and connectivity constraints.

4 years ago | 1 downloads |

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Create a Simulated Image of Diffraction Limited Spots with Noise
Create images with diffraction-limited spots of varying size and intensity, with noise.

4 years ago | 2 downloads |

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Submitted


Copy Files in Batches using Search Terms
Copy files matching search terms, from sub-directories matching search terms into a new directory.

4 years ago | 2 downloads |

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Submitted


File Name Search Function
Generate a list of file names that meet a set of text search criteria.

4 years ago | 2 downloads |

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Submitted


Random Numbers from a Discrete Distribution
Simple algorithm to generate random numbers from a user-defined discrete probability distribution.

4 years ago | 27 downloads |

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Submitted


Fire and/or Custom Colormap Function
Use the 'fire' colormap in Matlab, or create your own.

4 years ago | 6 downloads |

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Submitted


2D Distance Transform of Arbitrary Points
Distance transform from arbitrary points at a user set resolution and range.

4 years ago | 1 downloads |

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Submitted


Matrix Convolution with Sub-Pixel Resolution
Convolve two matrices at sub-pixel resolution, using bilinear interpolation.

5 years ago | 2 downloads |

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Question


Matlab causes complete computer crash with certain operations
I am running R2011b x64 in Windows 7 (64 bit) on a Velocity Micro machine. I have been reproducibly running into a very peculia...

5 years ago | 0 Answers | 1

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answers

Submitted


image_save
You know that annoying error when trying to write to an image stack in Matlab?

5 years ago | 1 downloads |

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