3D Shape Retrieval Challenge, SHREC2020, http://www.shrec.net/

Call for Track Proposals

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*New this year: In 2020, full paper submissions will follow a two-stage review process and will be published in the international journal Computes & Graphics upon acceptance.*

*Introduction*

The general objective of the 3D Shape Retrieval Contest is to evaluate the effectiveness of 3D-shape retrieval algorithms. SHREC2020 is the fifteens edition of the contest. Like previous years, it is organized in conjunction with the Eurographics Workshop on 3D Object Retrieval, where the results will be reviewed and presented, https://workshop.cgv.tugraz.at/3dor2020/.

Thanks to the efforts of previous track organizers, SHREC already provides many resources to compare and evaluate 3D retrieval methods. For this year's contest, we aim to explore new and updated tracks. Therefore, the participants are invited to have an active role in the organization of the event. This includes proposing track themes, building or acquiring a test collection, and deciding upon the queries, relevance assessment, and performance measures.

The participants of each track will collectively write a paper, which will be peer reviewed, and published in Computers & Graphics upon acceptance. At least one author per track must register for the workshop, and present the results. We also cordially invite all participants of a track to register and attend the workshop.

*Tracks*

The tracks organized in the past years have covered different aspects and tasks of 3D shape retrieval, for example: rigid or non-rigid models; partial (e.g. range scan) or complete models; sketch-based 3D retrieval; generic or domain specific models (e.g. CAD, biometrics, architectural and protein), and various aspects such as metric learning, outlier detection, correspondence, robustness, stability, registration, classification, recognition, pose estimation, and machine learning.

Now we solicit again proposals for tracks. You may opt for one of the above themes, or propose new ones. Track organizers are responsible for all aspects of organizing the track, such as: the task, the data collection (copyright issues, etc.), the queries, the ground truth, the experimental design, the evaluation method, and the procedural aspects, writing the final paper in collaboration with the contestants, and submitting it. See the SHREC home page http://www.shrec.net/ for examples of organizational aspects of previous tracks.

*Procedure*

The following list is a step-by-step description of the activities:

• Potential track organizers send their proposal to shrec@cs.uu.nl, describing the envisioned task, collection, queries, ground truth, evaluation method, and expected number of participants.

• Promising tracks and their organizers will be listed at the SHREC web page, the track organizers start working out the details.

• Participants register for the tracks they want to participate in.

• Each track is performed according to its own schedule.

• The track organizers collect the results.

• The track results are combined into a joint paper. Papers are subject to peer review, accepted journal papers are published in Computers & Graphics.

• The description of the tracks and their results are presented at the Eurographics Workshop on 3D Object Retrieval (4-5 September 2020, Graz, Austria).

*SHREC Time Schedule*

• February 17, 2020: Submission deadline for track proposals.

• February 21, 2020: Notification of acceptance of track proposals.

• Feb, March 2020: Each track has its own time line.

• April 03, 2020: Each track is completed, and results are included in a track report, submitted for review.

• May 1, 2020: Reviews done, first stage decision on acceptance or rejection.

• May 22, 2020: First revision.

• May 29, 2020: Second stage decision on acceptance or rejection.

• June 12, 2020: First revision.

• June 19, 2020: Final decision on acceptance or rejection.

• September 1, 2020: Publication online in Computers & Graphics.

• September 4-5, 2020: Eurographics Workshop on 3D Object Retrieval 2020, featuring SHREC 2020.

The individual tracks will have their own time schedule for registration of participants, release of queries or submission of executables, and submission of results, etc.

*Organization*

For information about the challenge, and the results of previous editions, see the SHREC home page, http://www.shrec.net/, or contact shrec@cs.uu.nl.

R.C.Veltkamp@uu.nl, www.uu.nl/staff/RCVeltkamp

Department of Information and Computing Sciences, Utrecht University, www.cs.uu.nl

Center for Game Research, www.gameresearch.nl