We are pleased to announce the 3rd edition of the Image Matching Workshop, co-located with CVPR 2021. 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
CMT website for paper submission: https://cmt3.research.microsoft.com/IMW2021

# TOPICS

Workshop topics include (but are not limited to):
• Formulations of keypoint extraction and matching pipelines with deep networks.
• Application of geometric constraints into the training of deep networks.
• Leveraging additional cues such as semantics and mono-depth estimates.
• Methods addressing adversarial conditions where current methods fail (weather changes, day versus night, etc.).
• Attention mechanisms to match salient image regions.
• Integration of differentiable components into 3D reconstruction frameworks.
• Connecting local descriptors/image matching with global descriptors/image retrieval.
• Matching across different data modalities such as aerial versus ground.
• Large-scale evaluation of classical and modern methods for image matching, by means of our open challenge.
• New perception devices such as event-based cameras.
• Other topics related to image matching, structure from motion, mapping, and re-localization, such as privacy-preserving representations.

# SUBMISSION

We invite paper submissions 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.

# IMPORTANT DATES

• Paper submission deadline: April 9, 2021
• Notification to authors: April 16, 2021
• Camera-ready deadline: April 18, 2021 (hard deadline on April 20)
• Workshop date: June 25, 2021 (half day: morning)

# 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 British Columbia