David Young
University of Sussex and University of Southampton
Professional Interests: Image Processing
Statistics
RANK
68
of 260,613
REPUTATION
1,960
CONTRIBUTIONS
5 Questions
641 Answers
ANSWER ACCEPTANCE
60.0%
VOTES RECEIVED
425
RANK
115 of 17,907
REPUTATION
9,318
AVERAGE RATING
4.60
CONTRIBUTIONS
20 Files
DOWNLOADS
143
ALL TIME DOWNLOADS
88036
CONTRIBUTIONS
0 Posts
CONTRIBUTIONS
0 Public Channels
AVERAGE RATING
CONTRIBUTIONS
0 Highlights
AVERAGE NO. OF LIKES
Accept 2 answers given by other contributors
Awarded to David Young on 15 Feb 2022
Contribute at least one answer each month for 12 consecutive months
Awarded to David Young on 20 Jul 2017
Solve a problem with a best solution
Awarded to David Young on 24 Feb 2012
Create a problem
Awarded to David Young on 09 Feb 2012
Your submissions were downloaded 250 or more times in a month
Awarded to David Young on 01 Nov 2019
Publish your first review
Awarded to David Young on 09 Oct 2019
Your submissions received 25 five star ratings
Awarded to David Young on 09 Oct 2019
Publish your first submission
Awarded to David Young on 09 Oct 2019
Accept 1 answer given by other contributors
Awarded to David Young on 20 Jul 2017
Answer 3 questions that were unanswered for more than 30 days
Awarded to David Young on 20 Jul 2017
100 of your answers have been accepted
Awarded to David Young on 20 Jul 2017
Content Feed
Submitted
Affine optic flow
Estimates the parameters of an affine (first-order) optic flow model from two images.
6 years ago | 4 downloads |
Submitted
Hough transform for circles
A Hough transform function for detecting circles, optimised to allow search over radii.
6 years ago | 42 downloads |
Submitted
Sinkhorn-Knopp algorithm for matrix normalisation
Normalises a matrix so that the row and column sums are all unity
7 years ago | 5 downloads |
Submitted
Rotate images with automatic cropping
The blank triangles that appear in the corners of rotated images are cropped away.
7 years ago | 5 downloads |
Submitted
Gradients with Gaussian smoothing
Grey-level gradients are estimated using Gaussian smoothing followed by symmetric differencing.
7 years ago | 7 downloads |
Submitted
A multidimensional map class
MapN provides a map class similar to containers.Map, but with multidimensional keys.
8 years ago | 2 downloads |
Submitted
TerraSAR-X and TanDEM-X tools
Read and convert TerraSAR-X and TanDEM-X COSAR files
8 years ago | 4 downloads |
Submitted
Fast 2-D convolution
Speeds up many 2-D convolutions using the SVD; also finds a fast approximation in other cases.
8 years ago | 9 downloads |
Submitted
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 | 4 downloads |
Submitted
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 |
Submitted
Image correspondences using cross-correlation
Find matching features in pairs of images using normalised cross-correlation: class file and demo.
10 years ago | 6 downloads |
Submitted
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 |
Submitted
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)).
11 years ago | 1 download |
Submitted
2-D convolution using the FFT
Convolution in 2-D using the Fast Fourier Transform.
11 years ago | 8 downloads |
Submitted
Fourier transform demonstration
An introductory demonstration of the discrete Fourier transform, making use of the fft function.
12 years ago | 17 downloads |
Submitted
Extended array indexing
Indexes a virtual array formed by extending an array indefinitely on each dimension.
12 years ago | 1 download |
Submitted
Log-polar image sampling
Resamples an image from a conventional grid to a log-polar grid, and back.
12 years ago | 11 downloads |
Submitted
Elementary Cellular Automata
Simulates any 1D nearest-neighbour binary cellular automaton.
12 years ago | 8 downloads |
You can also select a web site from the following list:
Americas
- América Latina (Español)
- Canada (English)
- United States (English)
Europe
- Belgium (English)
- Denmark (English)
- Deutschland (Deutsch)
- España (Español)
- Finland (English)
- France (Français)
- Ireland (English)
- Italia (Italiano)
- Luxembourg (English)
- Netherlands (English)
- Norway (English)
- Österreich (Deutsch)
- Portugal (English)
- Sweden (English)
- Switzerland
- United Kingdom (English)
Asia Pacific
- Australia (English)
- India (English)
- New Zealand (English)
- 中国
- 日本Japanese (日本語)
- 한국Korean (한국어)