Rank: 65 based on 618 downloads (last 30 days) and 14 files submitted
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David Young

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Company/University
University of Sussex
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50.86579132080078, -0.086335003376007

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Professional Interests:
Image Processing

 

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Files Posted by David View all
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(last 30 days) 		Comments Rating
09 Dec 2011 Screenshot Image correspondences using cross-correlation Find matching features in pairs of images using normalised cross-correlation: class file and demo. Author: David Young image correspondence, pixel correspondence, stereo vision, image registration, optical flow, image matching 110 15
  • 5.0
5.0 | 4 ratings
09 Dec 2011 Screenshot Affine optic flow Estimates the parameters of an affine (first-order) optic flow model from two images. Author: David Young image motion, optical flow, active vision, logpolar, affine, foveal vision 66 5
  • 5.0
5.0 | 2 ratings
09 Dec 2011 Image gradients with Gaussian smoothing Image grey-level gradients are estimated using Gaussian smoothing followed by differencing. Author: David Young image processing, image smoothing, gaussian smoothing, gradients, first derivative 35 0
07 Dec 2011 Screenshot Extended Brookshear Machine emulator and assembler Emulator and assembler for a simple computer, a teaching aid for computer science courses. Author: David Young machine code, assembler, gui, education, teaching, emulator 10 0
29 Sep 2011 A multidimensional map class MapN provides a map class similar to containers.Map, but with multidimensional keys. Author: David Young map, container, containers, memoize, containersmap, oop 10 0
Comments and Ratings by David View all
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11 May 2013 Gabor function masks Create Gabor-function convolution masks Author: David Young

Tony: click the link that says "Download Submission". It's near the top right of the page.
24 Apr 2013 Hough transform for circles A Hough transform function for detecting circles, optimised to allow search over radii. Author: David Young

Hi narjes, The call to circle_hough has too many input arguments. Have a close look at it and compare it with the examples in the demo. If you need more help, please post the code that calls circle_hough.
20 Dec 2012 Log-polar image sampling Resamples an image from a conventional grid to a log-polar grid, and back. Author: David Young

Hi Gomathy, I'm sorry, but I don't know very much about phase correlation, and not enough to help with your code I'm afraid.
20 Dec 2012 Hough transform for circles A Hough transform function for detecting circles, optimised to allow search over radii. Author: David Young

Hi Huanhuan. You need to download all the files in the submission and put them in a directory on your MATLAB path. It looks like you didn't download circlepoints.m.
10 Nov 2012 Hough transform for circles A Hough transform function for detecting circles, optimised to allow search over radii. Author: David Young

Hi Vijay. When you look at the image, how do you know which circles are particles and which are not? Can you turn that understanding into code to filter out the circles which you do not want?
Comments and Ratings on David's Files View all
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Updated File Comment by Comments Rating
11 May 2013 Gabor function masks Create Gabor-function convolution masks Author: David Young Young, David

Tony: click the link that says "Download Submission". It's near the top right of the page.
10 May 2013 Gabor function masks Create Gabor-function convolution masks Author: David Young Tony

how to download?
24 Apr 2013 Hough transform for circles A Hough transform function for detecting circles, optimised to allow search over radii. Author: David Young Young, David

Hi narjes, The call to circle_hough has too many input arguments. Have a close look at it and compare it with the examples in the demo. If you need more help, please post the code that calls circle_hough.
22 Apr 2013 Hough transform for circles A Hough transform function for detecting circles, optimised to allow search over radii. Author: David Young narjes

hi David, when i use this code
some errors appear like :

?? Error using ==> nargchk
Too many input arguments.

Error in ==> C:\MATLAB6p5\work\circle_hough.m
On line 40 ==> error(nargchk(2, 2+length(opts), nargin, 'struct'));
could you help me please??
27 Mar 2013 Fast 2-D convolution Speeds up many 2-D convolutions using the SVD; also finds a fast approximation in other cases. Author: David Young Evgeny Pr

Top Tags Applied by David
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image processing, filtering, image analysis, convolution, 2d
Files Tagged by David View all
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Updated   File Tags Downloads
(last 30 days) 		Comments Rating
09 Dec 2011 Screenshot Image correspondences using cross-correlation Find matching features in pairs of images using normalised cross-correlation: class file and demo. Author: David Young image correspondence, pixel correspondence, stereo vision, image registration, optical flow, image matching 110 15
  • 5.0
5.0 | 4 ratings
09 Dec 2011 Screenshot Affine optic flow Estimates the parameters of an affine (first-order) optic flow model from two images. Author: David Young image motion, optical flow, active vision, logpolar, affine, foveal vision 66 5
  • 5.0
5.0 | 2 ratings
09 Dec 2011 Image gradients with Gaussian smoothing Image grey-level gradients are estimated using Gaussian smoothing followed by differencing. Author: David Young image processing, image smoothing, gaussian smoothing, gradients, first derivative 35 0
07 Dec 2011 Screenshot Extended Brookshear Machine emulator and assembler Emulator and assembler for a simple computer, a teaching aid for computer science courses. Author: David Young machine code, assembler, gui, education, teaching, emulator 10 0
29 Sep 2011 A multidimensional map class MapN provides a map class similar to containers.Map, but with multidimensional keys. Author: David Young map, container, containers, memoize, containersmap, oop 10 0

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