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Thomas


University of Manchester

Active since 2012

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I am a postgraduate research student based in Manchester in the United Kingdom.
Professional Interests: geology, geophysics, lidar, photogrammetry

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Answered
How can I merge two surfaces?
Assuming you have two sets of vertex lists, pointsA & pointsB, and two sets of face lists, facesA and facesB, you probably want ...

mer än 6 år ago | 2

Submitted


Fast mesh-mesh intersection using ray-tri intersection with octree spatial partitioning.
Fast mesh-mesh intersection based on ray-tri solution. Octree partitioning gives large speed-up.

nästan 7 år ago | 5 downloads |

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Submitted


Hardware accelerated ray-box intersection
GPU portable implementation of the ray-box intersection method of Smits (1998)

nästan 7 år ago | 2 downloads |

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Submitted


Hardware accelerated ray-triangle intersection
GPU portable implementation of the ray-triangle intersection method of Moller and Trumbore (1997)

nästan 7 år ago | 2 downloads |

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Submitted


meshArea.m
Calculate the area of a triangular irregular network

mer än 7 år ago | 1 download |

Submitted


inertia.m
find best fitting plane through x,y,z points and calculate quality metrics (coplanarity/colinearity)

mer än 7 år ago | 2 downloads |

Answered
Error with importing data into Matlab
Looks like the error that is kicked out when the file isn't there. Check that it is in your work directory or include the full p...

nästan 8 år ago | 0

Answered
can any one tell me how to extract only the l component of the image ..if the image is rgb ..i want only the l component of the image ,how is it possible
Lets say you have a three channel RGB image, im. % extract the red channel red = im(:,:,1); % extract the green chann...

nästan 8 år ago | 0

Answered
How do I compute coordinate of an image in Matlab?
It really depends upon what you want. If you only want to track a single point, or a few points within your image series this ca...

nästan 8 år ago | 0

| accepted

Answered
conversion of image file into binary txt file
Hi megha You can do the following Urbinary = [0 1 0 0 1 0 1 0; % it says hi by the way! 0 1 0 0 1 0 1 0; ...

ungefär 8 år ago | 0

Submitted


compose / decompose 3x3 rotation matrix (comp_decomp_matrix)
Compose 3x3 rotation matrix from euler angles or decompose 3x3 rotation matrix to euler angles

mer än 8 år ago | 2 downloads |

Submitted


euclideanV
Computes the 3D distance between two 3D point sets

mer än 8 år ago | 1 download |

Submitted


euclidean
Computes the 3D distance between two xyz point sets represented by two matching nx3 arrays p and c.

mer än 8 år ago | 1 download |

Answered
How can be a 3D model is obtained using multiple 2d images using matlab ?
Hi Sam I believe you are trying to solve the structure from motion (SfM) problem. Below is a link to a matlab toolbox contain...

mer än 8 år ago | 1

| accepted

Answered
how to import csv file in matlab
I think the easiest way is to use CSVIMPORT from the File Exchange: http://www.mathworks.co.uk/matlabcentral/fileexchange/235...

nästan 9 år ago | 2

Answered
Strings from a text file to a matrix containing double precision floating numbers
I have worked out the answer for those with a similar problem: I use textscan and cellfun to split the strings, de-nest and r...

ungefär 9 år ago | 0

| accepted

Question


Strings from a text file to a matrix containing double precision floating numbers
Hi I have a text file containing a text header, and rows containing numeric values, with varying numbers of values, character...

ungefär 9 år ago | 3 answers | 0

3

answers

Question


CELLFUN syntax when calling the ATAN2 function for 3 x 3 rotation matrix decomposition
Hi I'm trying to use cellfun to apply the following formulas to elements of 3 x 3 rotation matrices, R, stored within a 1 x ...

ungefär 9 år ago | 2 answers | 0

2

answers

Answered
Write the content of individual cells in a cell array to discrete text files in a specified directory
Thanks Jan I have managed to get the code working using: for k=1:size(M,1) filename = ['C:\transform\cameras1\' '...

ungefär 9 år ago | 0

| accepted

Question


Write the content of individual cells in a cell array to discrete text files in a specified directory
Hi I have an nx1 cell array, M, containing 4x4 matrices in individual cells. For example: M{1} = 0.9990 -0.0007 ...

ungefär 9 år ago | 2 answers | 0

2

answers

Question


Create a structure from discrete column vectors or a 3 x n matrix composed of column vectors
Hi I'm trying to build a structure consisting of elements which are column vectors representing x, y, z points. So far, I hav...

ungefär 9 år ago | 1 answer | 0

1

answer

Question


Iteratively concatenate 3x4 matrices held in a structure with single line arrays held in a structure
I have a structure, eulernew holding n 3x4 matrices (eulernew.RMn). eulernew = RM1: [3x4 double] RM2: [3x4 doub...

mer än 9 år ago | 1 answer | 0

1

answer

Question


Iteratively concatenate matrices held in a structure with column vectors stored in an 3xn matrix
I have a series of 3x3 rotation matrices calculated from a 3xn matrix where columns are euler rotations. These are stored in a s...

mer än 9 år ago | 1 answer | 0

1

answer

Question


Calculate 3 x 3 rotation matrices from 3 x n matrix
I am using the following code to open a .csv file, index columns of interest (euler rotations around x, y, z axes) as single col...

mer än 9 år ago | 2 answers | 0

2

answers

Question


How to build multiple column vector output arguments by indexing from several single column arrays
I have written a simple piece of code that opens a csv file and orders the columns of interest into seperate single column array...

mer än 9 år ago | 1 answer | 0

1

answer