jackzhousz / optimisedcentresofrotationskinning

Library to Compute Centres of Rotation for Optimised Centres of Rotation Skinning by Le and Hodgins 2016 "Real-time Skeletal Skinning with Optimized Centers of Rotation"

CoRCalculator - Library to Compute Centres of Rotation for Optimised Centres of Rotation Skinning

An example on how to use the library is given in example.cpp.

The CMake file is tested on Linux and Windows.

When compiled with the flag COR_ENABLE_PROFILING, the CoRCalculator will print the times it has needed for each step.

The library has to be linked with the option -pthread, as it uses multithreading (std::async).

Dependencies

This library solely depends on the header-only library glm. On Linux, installing libglm-dev with apt suffices. On Windows, finding glm may require some changes, as we do it manually.

Shader

We provide GLSL vertex shader logic for these three skeletal skinning techniques:

• Linear Blend Skinning (LBS)
• Dual Quaternion Skinning (DQS)
• Optimised Centres of Rotation Skinning (CRS).

The file skeletons.glsl contains the perform_skinning function, that computes one of these three methods, depending on a uniform variable. The files quaternion.glsl and dualquaternion.glsl each contain utility functions for their respective mathematics and have to be compiled together with the vertex shader because they are required by skeletons.glsl. We split these files so that you may pick what you need, since the skeletons.glsl file has to be customized anyway (especially the layout locations of the attributes).

Citation

This repository contains code corresponding to:

P. Bittner, JP Tauscher, S. Grogorick, M. Magnor. Evaluation of Optimised Centres of Rotation Skinning. Poster @ International Conference on Computational Visual Media (CVM) 2019

N. Magnenat-Thalmann, R. Laperrire, and D. Thalmann. Joint-dependent local deformations for hand animation and object grasping. In Proceedings on Graphics interface’88. Citeseer, 1988

L. Kavan, S. Collins, J.Žára, and C. O'Sullivan. Skinning with dual quaternions. In Proceedings of the 2007 symposium on Interactive 3D graphics and games, pages 39–46.ACM, 2007

B. H. Le and J. K. Hodgins. Real-time skeletal skinning with optimized centers of rotation. ACM Transactions on Graphics (TOG), 35(4):37, 2016

Please cite as:

@misc{bittner2019evaluation,
  title = {Evaluation of Optimised Centres of Rotation Skinning},
  author = {Bittner, Paul Maximilian and Tauscher, Jan-Philipp and Grogorick, Steve and Magnor, Marcus},
  howpublished = {Poster @ International Conference on Computational Visual Media 2019},
  month = {Apr},
  year = {2019}
}

License

Copyright (c) 2019 Paul Maximilian Bittner, Technische Universität Braunschweig

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

You understand and agree that the authors are under no obligation to provide either maintenance services, update services, notices of latent defects, or corrections of defects with regard to the Software. The authors nevertheless reserve the right to update, modify, or discontinue the Software at any time.

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. You agree to cite the papers "Evaluation of Optimised Centres of Rotation Skinning", "Joint-dependent local deformations for hand animation and object grasping", "Skinning with dual quaternions" and "Real-time skeletal skinning with optimized centers of rotation" in documents and papers that report on research using this Software.