Community Profile

photo

Tristan Ursell


University of Oregon

24 total contributions since 2012

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

Contact

Tristan Ursell's Badges

  • Personal Best Downloads Level 3
  • First Review
  • 5-Star Galaxy Level 5
  • First Submission

View details...

Contributions in
View by

Submitted


imread_big -- read in TIFF stacks larger than 4GB
Load any size TIFF stack, even those larger than 4GB.

6 months ago | 7 downloads |

Submitted


imageautocorr -- Autocorrelation of time-ordered data
Performs autocorrelation of time-ordered data or images, to output an autocorrelation matrix with values ranging from -1 to 1.

1 year ago | 1 download |

Thumbnail

Submitted


autocorr2d
Compute the 2D spatial autocorrelation of a matrix or image using the Wiener - Khintchine Theorem.

1 year ago | 10 downloads |

Thumbnail

Submitted


encoder.m decoder.m
Simple and instructive implementation of symmetric-key encryption and decryption.

3 years ago | 7 downloads |

Submitted


bandbank -- isotropic image spectral decomposition and filtering
Decompose images into spatially isotropic spectral component images.

3 years ago | 2 downloads |

Thumbnail

Submitted


relnoise(Iin,sz,sigma,varargin)
Reduce image noise by measuring local pixel statistics and remapping intensities.

3 years ago | 2 downloads |

Thumbnail

Submitted


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

4 years ago | 14 downloads |

Thumbnail

Submitted


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

4 years ago | 0 downloads |

Thumbnail

Submitted


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

6 years ago | 9 downloads |

Thumbnail

Submitted


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

6 years ago | 1 download |

Thumbnail

Submitted


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

6 years ago | 12 downloads |

Submitted


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

6 years ago | 6 downloads |

Thumbnail

Submitted


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

6 years ago | 11 downloads |

Thumbnail

Submitted


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

6 years ago | 5 downloads |

Thumbnail

Submitted


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

7 years ago | 1 download |

Thumbnail

Submitted


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

7 years ago | 3 downloads |

Thumbnail

Submitted


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

7 years ago | 0 downloads |

Thumbnail

Submitted


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

7 years ago | 1 download |

Submitted


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

7 years ago | 13 downloads |

Thumbnail

Submitted


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

7 years ago | 6 downloads |

Thumbnail

Submitted


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

7 years ago | 1 download |

Thumbnail

Submitted


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

7 years ago | 2 downloads |

Thumbnail

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...

7 years ago | 0 answers | 1

0

answers

Submitted


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

8 years ago | 0 downloads |