Affine optic flow
Estimates the parameters of an affine (first-order) optic flow model from two images.
6 years ago | 13 downloads |
Hough transform for circles
A Hough transform function for detecting circles, optimised to allow search over radii.
6 years ago | 28 downloads |
Sinkhorn-Knopp algorithm for matrix normalisation
Normalises a matrix so that the row and column sums are all unity
6 years ago | 2 downloads |
Rotate images with automatic cropping
The blank triangles that appear in the corners of rotated images are cropped away.
7 years ago | 6 downloads |
Gradients with Gaussian smoothing
Grey-level gradients are estimated using Gaussian smoothing followed by symmetric differencing.
7 years ago | 5 downloads |
A multidimensional map class
MapN provides a map class similar to containers.Map, but with multidimensional keys.
7 years ago | 1 download |
TerraSAR-X and TanDEM-X tools
Read and convert TerraSAR-X and TanDEM-X COSAR files
8 years ago | 3 downloads |
Fast 2-D convolution
Speeds up many 2-D convolutions using the SVD; also finds a fast approximation in other cases.
8 years ago | 6 downloads |
Canny edge detection in 2-D and 3-D
A Canny edge detector for two-dimensional image and three-dimensional volume data.
8 years ago | 18 downloads |
Creates empty struct arrays of various kinds
8 years ago | 2 downloads |
Max and min keeping NaNs
The max and min functions ignore NaN values. These functions keep them like arithmetic functions do.
8 years ago | 1 download |
Image correspondences using cross-correlation
Find matching features in pairs of images using normalised cross-correlation: class file and demo.
10 years ago | 8 downloads |
Extended Brookshear Machine emulator and assembler
Emulator and assembler for a simple computer, a teaching aid for computer science courses.
10 years ago | 3 downloads |
Logarithm of complex sine and cosine avoiding overflow
Functions to compute log(sin(Z)) and log(cos(Z)) avoiding overflow for large abs(imag(Z)).
10 years ago | 1 download |
2-D convolution using the FFT
Convolution in 2-D using the Fast Fourier Transform.
11 years ago | 6 downloads |
Fourier transform demonstration
An introductory demonstration of the discrete Fourier transform, making use of the fft function.
11 years ago | 7 downloads |
Extended array indexing
Indexes a virtual array formed by extending an array indefinitely on each dimension.
12 years ago | 1 download |
Log-polar image sampling
Resamples an image from a conventional grid to a log-polar grid, and back.
12 years ago | 9 downloads |
Elementary Cellular Automata
Simulates any 1D nearest-neighbour binary cellular automaton.
12 years ago | 14 downloads |
Gabor function masks
Create Gabor-function convolution masks
13 years ago | 1 download |