[Bf-committers] GSoC 201 - Automatic Skeleton Extraction
Gavin Howard
gavin.d.howard at gmail.com
Thu Apr 25 19:50:59 CEST 2013
Alexander,
First, I must make a disclaimer. I am NOT a Blender developer, so my
opinion really doesn't matter. Take what I say with a grain of salt.
That said, time to get to business. Speaking as a Blender user, I
would love to have this feature. It would definitely help me. However, as a
programmer, I know that implementing something like this would not be easy.
If it can be done, without breaking Blender, give it a shot.
One last note: to be honest, I'm not sure that this project is small
enough to do for GSoC. However, I can see that you have done GSoC before,
so you probably know better than I do. Just my two cents.
God Bless,
Gavin H.
On Apr 25, 2013 10:02 AM, "Alexander Pinzon Fernandez" <apinzonf at gmail.com>
wrote:
> Automatic Skeleton Extraction
>
> Alexander Pinzon Fernandez
>
> Email: apinzonf at gmail.com
>
>
> Short description:
>
> The character animation is generally done with skeletons that control each
> joint in the character which drastically simplifies the animation process.
> The construction of the skeleton given a polygon mesh is a task typically
> performed by an artist. This project proposes to implement a method for
> extracting the skeleton automatically given a polygon mesh.
>
>
>
> *Name*: Alexander Pinzon Fernandez
>
> *Email*: apinzonf at gmail.com
>
> *IRC*: apinzonf
>
> *www*: http://apinzonf.wordpress.com/,
> http://wiki.blender.org/index.php/User:Apinzonf
>
> *Additional Contact Info*
>
> *Phone*: +57 300 2 92 74 30
>
> *Physical Address*: Cr 81 H No 42a-58 sur Bogota-Colombia
>
>
> Synopsis
>
> The character animation is generally done with skeletons that control each
> joint in the character which drastically simplifies the animation process.
> The construction of the skeleton given a polygon mesh is a task typically
> performed by an artist. This project proposes to implement a method for
> extracting the skeleton automatically given a polygon mesh.
>
> This method iteratively contracts the shape in the reverse direction of the
> curvature flow, with a constraint that forces the contracted model will
> closely match the original. In each iteration eliminates details. After the
> model volume is close to zero is passed to the next stage in which through
> a special surface simplification method removes vertices to obtain a 1D
> structure.
>
> Paper used:
>
> AU, Oscar Kin-Chung, et al. Skeleton extraction by mesh contraction. ACM
> Transactions on Graphics (TOG). ACM, 2008. p. 44.
>
>
> Benefits to Blender
>
> This project proposes a new tool for blender user that requires extract the
> skeleton of polygon meshes.
>
> This method allows to obtain the skeleton of a polygon mesh quickly and
> automatically.
>
> This method is insensitive to noise because it uses a smoothing algorithm
> for contraction which removes the noise and detail in each iteration.
>
>
> Deliverables
>
> 1. A new skeleton extraction tool for Blender.
> 2. Some pages of documentation to be included in the manual
> 3. A technical document for developers to improve the method in the
> future.
> 4. A tutorial explaining the use of the tool.
>
>
> Project Details
>
> The project would divide into seven parts:
>
> 1. Iteratively contracting the mesh until the volume is close to zero.
> 2. Simplifying polygon mesh to obtain a 1D structure (skeleton).
> 3. Relocating skeleton nodes in the center of each segment.
> 4. Create vertex groups for each node of the skeleton.
> 5. Converting a 1D polygon mesh into an armature.
> 6. Link vertex groups to bones of the armature.
> 7. Generation of the documentation and tutorials.
>
>
> Project Schedule
>
> - *2 Weeks:- May 27 – Jun 09:* Iteratively contracting the
> mesh until the volume is close to zero.
> - *3 Weeks:- Jun 10 – Jun 31:* Simplifying polygon mesh to
> obtain a 1D structure (skeleton).
> - *2 Weeks:- Jul 01 – Jul 14:* Relocating skeleton nodes in
> the center of each segment.
> - *2 Weeks:- Jul 15 – Jul 28:* Create vertex groups for each
> node of the skeleton.
> - *3 Weeks:- Jul 29 – Aug 18:* Converting a 1D polygon mesh
> into an armature.
> - *2 Weeks:- Aug 19 – Sep 01:* Link vertex groups to bones of
> the armature..
> - *1 Weeks:- Sep 02 – Sep 08:* Testing the tool and Define and
> implement graphical user integration.
> - *2 Weeks:- Sep 09 – Sep 22:* Generation of the documentation
> and tutorials.
>
>
> Bio
>
> I graduated as systems engineer in Colombia in 2007.
>
> I am a MSc computer science student at National University of Colombia.
>
> Skeleton extraction and mesh smoothing are the research topics of my MSc. I
> am use CGAL, Graphite and Qt libraries.
>
> Since 2007 I am a member of the Bioingenium Research Group of National
> University of Colombia.
>
> I have been using Blender for about 10 years. I was working on the develop
> of a operator to remove noise from a mesh at GSOC 2012 – Blender suchi
> branch “Mesh Smoothing for 3d Scan Data”.
>
>
> WORK EXPERIENCE:
>
> 2012 Google Summer of Code – Blender Foundation: “Mesh Smoothing for 3d
> Scan Data”.
>
> 2010 - Scire Foundation, Software Architect:
>
> Design and development of web services data, hibernate and oracle.
>
> Programming GUI with RichFaces.
>
> Library of generic manipulation of trees, based on Java reflection
> techniques.
>
> 2005 - 2007 Sigtech, LTDA, Developer Engineer:
>
> SIGC System Development for the "Departamento Administrativo de
> Catastro Distrital DACD".
>
> Software used in development: Oracle 9i, Visual Basic 6, PL / SQL
> Developer.
>
> 2004 -2005 IIE and Colciencias, Student Monitor research:
>
> Project: " Theater of Memory in Virtual Worlds:"
>
> Architecture for handling streaming video that comes from a digital
> camcorder and put it as a texture of a 3D plane in a virtual setting, using
> the Java software, J3D, JMF, VRML, X3D.
>
>
> SOFTWARE DEVELOPED:
>
> Nukak3D http://sourceforge.net/projects/nukak3d
>
> 3D medical image platform for visualization and image processing.
>
> Nukak3d is a flexible architecture that integrates general-purpose
> graphics libraries such as VTK, ITK, VTKInria3D, OpenGL, under a graphical
> user interface (wxWidgets) for three-dimensional visualization and
> processing of medical images. On C++.
>
> JNukak3D http://sourceforge.net/projects/jnukak3d
>
> Software for three-dimensional visualization of DICOM images based on java.
>
> JVC1394 http://sourceforge.net/projects/jvc1394/
>
> Wrapper for the library Libdc1394 to enable communication with the Java
> programming language. Java Video Capture for IEEE 1394 cameras. On C, C++,
> Java, Swig.
>
>
> PUBLICATIONS
>
> León J., Pinzón A., Sánchez C., Romero E. A distributed plugin based
> architecture for medical image processing. Proc. SPIE 8674, Medical Imaging
> 2013: Advanced PACS-based Imaging Informatics and Therapeutic Applications,
> 867403 (March 29, 2013);doi:10.1117/12.2007180.
>
> Pinzón, A., Leon, J.C., Romero E., Diseño y desarrollo de una
> aplicación web para la visualización eficiente de imágenes medicas, con
> procesamiento 3D por software o por hardware. En Seminario Internacional de
> Procesamiento y Análisis de Imágenes Médicas SIPAIM 2009, (Noviembre 27-27,
> 2009), Bogotá Colombia.
>
> Pinzón A., Romero E., Visualización 3D de imágenes médicas: una
> herramienta Open Source, En Seminario Internacional de Procesamiento y
> Análisis de Imágenes Médicas SIPAIM 2008, (Noviembre 24-27, 2008), Bogotá –
> Colombia.
>
> Mendoza, B. U., Ramos, G. A., Mendez, L. M., Santamaria, W.,
> and Pinzón, A. 2006. Camera Motion Control from a Java 3D
> Environment: Virtual Studio Application in Decorative Arts Museum
> Collections. In Proceedings of the 2006 international Conference on
> Cyberworlds (November 28 - 29, 2006). CW. IEEE Computer Society,
> Washington, DC, 58-64.
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