Community Profile # Nicolas Douillet

### PhD, INRIA and CNRS alumni

Last seen: Today Active since 2017

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

Programming Languages:
MATLAB
Spoken Languages:
English, French

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Submitted

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

Regular polyhedron inscribed sphere
Function to compute and display the inscribed sphere of a regular polyhedron. Rendering problem with surf and trisurf
Any clue ? Thank you.

29 days ago | 0

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

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Submitted

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

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

isinside2Dset
Function to check if a vertex is located inside or outside a given 2D set. Submitted

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

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

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

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

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

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. Submitted

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