# CVPR 2020 Workshop on Image Matching: Local Features and Beyond

We are pleased to announce the 2nd edition of the Image Matching Workshop, co-located with CVPR 2020. Its goal is to encourage and highlight novel strategies for image matching that deviate from and advance traditional formulations, with a focus on large-scale, wide-baseline matching for 3D reconstruction and pose estimation. This can be achieved by applying new technologies to sparse feature matching, or doing away with keypoints and descriptors entirely.

Workshop website: https://image-matching-workshop.github.io
Challenge website: https://vision.uvic.ca/image-matching-challenge
CMT website for paper submission: https://cmt3.research.microsoft.com/IMW2020

# TOPICS

Workshop topics include (but are not limited to):
• Reformulating keypoint extraction and matching pipelines with deep networks
• Applying geometric constraints into the training of (sparse or dense) deep networks
• Leveraging additional cues such as semantics
• Developing adversarial methods to deal with conditions where current methods fail (weather changes, day versus night, etc.)
• Exploring attention mechanisms to match salient image regions
• Integrating differentiable components into 3D reconstruction frameworks
• Matching across different data modalities such as aerial versus ground

# CHALLENGE

In order to advance research in these areas, we will also hold the 2nd edition of an open challenge on wide-baseline image matching, co-located with the workshop. It has been greatly improved from last year: we have open-sourced the benchmark and released a new evaluation server. Winners will be awarded prizes by our sponsors, and be invited to give talks at the workshop, along with selected participants.

# SUBMISSION

We invite paper submissions in two tracks:

• Workshop papers: Up to 8 pages, excluding references and acknowledgements. They should use the CVPR template and be sent to the IMW2020 CMT site. Submissions must contain novel work and will be indexed in IEEE Xplore/CVF. They will receive at least two double-blind reviews.
• Extended abstracts: We also allow submissions of work that is published or under review. These papers will not be archived: they will be presented as posters during the workshop. The goal of this track is to encourage debate among peers. They can be as short as 2 pages or as long as 8 and may use any template. We welcome relevant papers from the main conference. They should be sent to imagematching@uvic.ca directly, as a PDF, by May 15, 2020. They should not be anonymous.

# IMPORTANT DATES

• Paper submission deadline: March 31
• Notification to authors: April 10
• Camera-ready deadline: April 15
• Challenge submission deadline: May 7
• Deadline for short descriptions on challenge submissions: May 15
• Extended abstract deadline: May 15
• Workshop date: June 19 (half day: morning)

# INVITED SPEAKERS

• Prof. Krystian Mikolajczyk, Imperial College London.
• Prof. Dieter Fox, University of Washington.

# ORGANIZERS

• Vassileios Balntas, Scape Technologies
• Vincent Lepetit, École des Ponts ParisTech
• Jiri Matas, Czech Technical University
• Dmytro Mishkin, Czech Technical University
• Johannes Schönberger, Microsoft
• Eduard Trulls, Google
• Kwang Moo Yi, University of Victoria