SHREC 2011 - Shape Retrieval Contest of Range Scans

Call For Participation:
SHREC 2011 - Shape Retrieval Contest of Range Scans


The objective of this shape retrieval contest is to retrieve 3D models those are relevant to a query range scan. This task corresponds to a real life scenario where the query is a 3D range scan of an object acquired from an arbitrary view direction. The algorithm should retrieve the relevant 3D objects from a database.

Task description
In response to a given set of queries, the task is to evaluate similarity scores with the target models and return an ordered ranked list along with the similarity scores for each query. The set of query consists of range images.

Data set
The query set is composed of 150 range images, which are acquired by capturing 3 range scans of 50 models from arbitrary view directions. The range images are captured using a Minolta Laser Scanner. The file format is in the ASCII Object File Format (*.off) representing the scan in a triangular mesh.

The target database contains 1000 complete 3D models, which are categorized into 50 classes. In each class there are 20 models. The file format to represent the 3D models is the ASCII Object File Format (*.off).

Evaluation Methodology
We will employ the following evaluation measures: Precision-Recall curve; Average Precision (AP) and Mean Average Precision (MAP); E-Measure; Discounted Cumulative Gain; Nearest Neighbor, First-Tier (Tier1) and Second-Tier (Tier2).

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

January 24 - Call for participation.
January 28 - Sample query scans and target models will be available on line.
February 1 - Please register before this date.
February 1 - Distribution of the final query set and target database. Participants can start the retrieval.
February 9 - Submission of results (ranked lists) and a one page description of their method(s).
February 11 - Distribution of relevance judgments and evaluation scores.
February 13 - Submission of final descriptions for the contest proceedings.
February 15 - Track is finished, and results are ready for inclusion in a track report
February 22 - Camera ready track papers submitted for printing
April 10 - EUROGRAPHICS Workshop on 3D Object Retrieval including SHREC'2011