An international benchmark for nanometer-scale instance segmentation of axons and myelin sheaths in TEM images, tackling the core computer vision bottleneck in automated g-ratio quantification. The challenge is organized by the ICM.Quant Microstructure Lab at the Paris Brain Institute (Institut du Cerveau - ICM), in partnership with SIPAIM 2026.
Registration Deadline: November 9, 2026
Register to Participate
* Imaging Modality: TEM (100 kV, 3000x, 2.15 nm/px).
* Target Classes: Axon & Myelin (paired instances).
* Evaluation Metrics: Dice + HD95.
* Registration Deadline: November 9, 2026 (23:59 CET).
* Submission Deadline: November 24, 2026 (23:59:59 CET).
* Winners will be announced live during the SIPAIM 2026 Award Ceremony.
Official awards, oral presentation selections, and certificates will be revealed live
during the SIPAIM 2026 conference session, following independent validation of all
submissions by the ICM.Quant team on high-performance compute clusters.
🥇 1st Place — Grand Champion
🥈 2nd Place — Silver
🥉 3rd Place — Bronze
Review the full challenge overview, dataset, submission protocol, and leaderboard, and complete the mandatory registration on the official challenge site.