# 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

**Statistics**

RANK**7,621**

of 277,660

REPUTATION**5**

CONTRIBUTIONS

**14** Questions

**12** Answers

ANSWER ACCEPTANCE **
78.57%
**

VOTES RECEIVED**5**

RANK**1,621** of 18,786

REPUTATION**1,090**

AVERAGE RATING**4.90**

CONTRIBUTIONS**73** Files

DOWNLOADS **218**

ALL TIME DOWNLOADS**7318**

CONTRIBUTIONS**0 Posts**

CONTRIBUTIONS**0** Public Channels

AVERAGE RATING

CONTRIBUTIONS**0** Highlights

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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...

4 days ago | 16 downloads |

Submitted

Regular polyhedron inscribed sphere

Function to compute and display the inscribed sphere of a regular polyhedron.

9 days ago | 4 downloads |

Question

Rendering problem with surf and trisurf

Hey, When I use surf or trisurf functions to plot a 3D plane made of several ploygons (triangles or squares for instance), I ...

1 month ago | 1 answer | 0

### 1

answerSubmitted

Regular polygon incircle

Function to compute and display the incircle of a regular polygon in 2D or 3D space.

2 months ago | 2 downloads |

Submitted

Any 3D rotation

Performs 3D rotation of a single 2D or 3D vector -or vectors array- around any given 3D axis.

2 months ago | 6 downloads |

Submitted

isinside2Dset

Function to check if a vertex is located inside or outside a given 2D set.

4 months ago | 1 download |

Submitted

Jerusalem cube

Function to compute, display, and save the Jerusalem cube at any iteration. Help, doc, and examples included.

5 months ago | 1 download |

Submitted

Sierpinski ball

Function to compute, display, and save the Sierpinski ball (fractal sponge) based on the regular octahedron

5 months ago | 1 download |

Solved

generate number in particular way

A = [1 5 2 7]; MAX = 10; generate a array Y = [1 2 2 2 2 2 3 3 4 4]; i.e. total eleme...

5 months ago

Solved

Find the sum of the elements in the "second" diagonal

Find the sum of the elements in the diagonal that starts at the top-right corner and ends at the bottom-left corner.

5 months ago

Submitted

The MATrix LAB has you

Need to unplug ? -> Follow Trinity, deep into the rabbit hole ;-)

5 months ago | 2 downloads |

Submitted

chat with HAL9000 !

chat with HAL9000 and try to survive it ! ^_^

5 months ago | 1 download |

Submitted

3D printable Christmas star

Function to compute, display and save a 3D printable Christmas star.

5 months ago | 7 downloads |

Submitted

3D printable Koch snowflake

Function to compute, display, and save the triangular base 3D Koch snowflake at any iteration. Help, doc, examples included.

5 months ago | 1 download |

Submitted

Cube base 3D Koch snowflake

Function to compute, display, and save the cube base Koch snowflake, at any iteration. 3D printable ready option. Help, doc, exa...

5 months ago | 1 download |

Solved

Build edges list

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

6 months 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 ...

6 months 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...

6 months 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...

6 months 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...

6 months 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 ...

6 months 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...

6 months 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...

6 months 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...

6 months 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.

6 months ago | 0

| accepted

Submitted

Tetrahedron insphere

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

6 months 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.

6 months ago | 1 download |

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...

6 months 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...

6 months ago