# Nicolas Douillet

### PhD, INRIA and CNRS alumni

Interested in computational geometry, image processing, 3D reconstruction, mesh processing, mesh generation, arithmetics.

**Programming Languages:**

MATLAB

**Spoken Languages:**

English, French

**Professional Interests:**

**Statistics**

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**Content Feed**

Submitted

Freeman chain code

Freeman chain code algorithm to extract boundaries of objects in a binary image. Help, doc, examples included. + Some bwmorph op...

1 day ago | 30 downloads |

Solved

Build edges list

Input T is a triangulation connectivity indices list (triplet list of indices -positive integers-, each index refering to a vert...

4 days ago

Solved

List every vertices neighbor indices

Input T is a <https://fr.mathworks.com/help/matlab/ref/triangulation.html triangulation>. The purpose of this function is to ...

4 days ago

Solved

Find a common edge

First input is T, a triplet list of indices. Second input is e = [e1 e2], a row vector, couple of indices (positive distinct int...

4 days ago

Solved

Remove duplicated triangles

Input T is a triangulation (triplet list of indices -positive integers-, each index refering to a vertex number in a correspondi...

4 days ago

Solved

Find neighbor triangle indices

First input T is a triangulation (triplet list of indices -positive integers-, each index refering to a vertex number in a corre...

4 days ago

Solved

Find edges from a vertex

First input is T, a triplet list of indices. Second input is i, a single index (positive integer). The goal of this function is ...

4 days ago

Comment générer un vecteur content N valeur binaire dont 10% de ces valeurs sont égales à 1

Salut, Alors déjà si tu veux exactement 10% ça va bien sûr dépendre de la taille de ton vecteur (si celui-ci possède moins de 1...

4 days ago | 0

plotting spectrogram for 3d matrix

As Marco said, spectrogram takes a vector as input, not matrix. However depending on how your signals are stored in your data ma...

4 days ago | 0

Solved

Spherical radius given four points

Determine the radius of a sphere provided four non-coplanar points on the surface of the sphere. pts = [x1 y1 z1; x...

5 days ago

Are there marker types sensitive to light ?

No answer, so I guess the answer is no (?) Edit : solved, cause actually pretty much the same question as this one.

7 days ago | 0

| accepted

Submitted

Tetrahedron insphere

Function to compute and display the insphere of any given tetrahedron. Help, doc, examples included.

7 days ago | 2 downloads |

Submitted

Tetrahedron circumsphere

Function to compute the centre and the radius of the circumsphere to a given tetrahedron. Help, doc, examples included.

7 days ago | 5 downloads |

Solved

Back to basics 23 - Triangular matrix

Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, return a matrix with all elements above a...

8 days ago

Solved

Back to basics 21 - Matrix replicating

Covering some basic topics I haven't seen elsewhere on Cody. Given an input matrix, generate an output matrix that consists o...

8 days ago

Solved

Sum of series VII

What is the sum of the following sequence: Σ(km^k)/(k+m)! for k=1...n for different n and m?

8 days ago

Solved

Sum of series

a(n) = n^2 - (n-1)^2 find the summation of the series upto n i.e. a(1)+a(2)+...+a(n)

8 days ago

Solved

Sum of series IX

What is the sum of the following sequence: Σ 1/k! for k=1...n for different n?

8 days ago

Solved

Sum of series VI

What is the sum of the following sequence: Σk⋅k! for k=1...n for different n?

8 days ago

Solved

Sum of series V

What is the sum of the following sequence: Σk(k+1) for k=1...n for different n?

8 days ago

Solved

Sum of series IV

What is the sum of the following sequence: Σ(-1)^(k+1) (2k-1)^2 for k=1...n for different n?

8 days ago

Solved

Sum of series III

What is the sum of the following sequence: Σ(2k-1)^3 for k=1...n for different n?

8 days ago

Solved

Sum of series II

What is the sum of the following sequence: Σ(2k-1)^2 for k=1...n for different n?

8 days ago

Solved

Sum of series I

What is the sum of the following sequence: Σ(2k-1) for k=1...n for different n?

8 days ago

Solved

Whether the input is vector?

Given the input x, return 1 if x is vector or else 0.

8 days ago

Solved

Vector creation

Create a vector using square brackets going from 1 to the given value x in steps on 1. Hint: use increment.

8 days ago

Solved

Doubling elements in a vector

Given the vector A, return B in which all numbers in A are doubling. So for: A = [ 1 5 8 ] then B = [ 1 1 5 ...

8 days ago

Solved

Flip the vector from right to left

Flip the vector from right to left. Examples x=[1:5], then y=[5 4 3 2 1] x=[1 4 6], then y=[6 4 1]; Request not ...

8 days ago