SHREC 2015 - Range Scans based 3D Shape Retrieval

Call For Participation:
SHREC 2015 - Range Scans based 3D Shape Retrieval

Introduction

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.


Figure 1. Target Dataset


Figure 2. Range Scans
Task description
In response to a given set of range scan 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.

Data set
The query set is composed of at least 180 range images, which are acquired by capturing 3 or 4 range scans of 60 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 1200 complete 3D models, which are categorized into 60 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).

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

Schedule
January 01 - Call for participation.
January 15 - 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 15 - Submission of results (ranked lists) and a one page description of their method(s).
February 20 - Distribution of relevance judgments and evaluation scores.
February 28 - Submission of final report for Review
March 15 - March 15, 2015: All reviews due, feedback and notifications
March 30 - Camera ready track papers submitted for printing
May 2-3, 2015 - EUROGRAPHICS Workshop on 3D Object Retrieval including SHREC'2015