Quantifying Shape Complexity

SHREC 2021 Track


The proposed track is designed to give a benchmark on the quantification of 3D shape complexity. We investigate the correlates of complexity perception and the possibility of using complexity for content based object retrieval. Shape complexity is an ill-defined concept. Hence, we propose to explore complexity using multiple tasks and data collections. Due to the relative nature of complexity, a linear order may not make sense. There may be multiple aspects of complexity that can be measured. For this reason, for the tasks concerning the second and the third sets, we encourage participants to provide scores in the form of a pair of scalars instead of a single one. Likewise, two alternative orders can also be submitted. Based on research on visual complexity perception [2], it seems reasonable to concentrate on two measures rather than more measures. If a participating method yields more than two measures, we suggest the participants to apply dimensionality reduction.



The dataset will be available on January 25, 2021.
Please register to receive email when the dataset is published.


If you intend to participate in the track, please send us an email and mention your affiliation and co-authors.
This helps us keep track of the participants and plan accordingly. It also allows us to send you updates about the track.




  • M. Ferhat Arslan 1
  • Alexandros Haridis 2
  • Paul L. Rosin 3
  • Sibel Tari 1
1: Middle East Technical University, Department of Computer Engineering
2: Massachusetts Institute of Technology, Department of Architecture
3: Cardiff University, School of Computer Science & Informatics

Contact us


The registration and submission deadlines are in AoE (Anywhere on Earth) timezone.

January 11 Track announcement & registration is open
January 25 Dataset release
February 1 Registration deadline
March 8 Participants submission deadline
March 15 Track paper submission to SHREC
April 15 SHREC: First reviews done, first stage decision on acceptance or rejection
May 15 SHREC: First revision due
June 15 SHREC: Second stage of reviews complete, decision on acceptance or rejection
June 30 SHREC: Final version submission
July 5 SHREC: Final decision on acceptance or rejection

Website last updated: Jan 11 2021 13:55 (GMT+3)