Kohei Ozaki (smly)

AI Competitions

I have been actively competing in AI/ML competitions since 2011, spanning over 15 years. Ranked as high as 4th globally on Kaggle (out of 490K+ users) with 23 gold medals.

I actively participate in competitions co-located with top academic conferences and am particularly drawn to those involving satellite imagery analysis.

Beyond competitions, I also engage in community activities and have been serving as a Google Developer Expert for Kaggle since 2025.

Satellite Imagery

I have a strong interest in remote sensing technologies and their applications, including satellite imagery analysis, UAV-based small-object detection, and LiDAR measurements, as well as geolocalization techniques.

• 2021 5th xView3: Detecting IUU Fishing Vessels DIU
• 2021 3rd NGA Overhead Geopose Challenge NGA
• 2020 1st SpaceNet 5: Road Network Extraction SpaceNet
• 2018 1st SpaceNet 2: Building Detection v2 SpaceNet
• 2018 5th SpaceNet 4: Off-Nadir Buildings SpaceNet

Academic Conferences

• 2025 7th Image Matching Challenge 2025 CVPR 2025
• 2025 4th Google Code Golf Championship NeurIPS 2025
• 2023 4th Image Matching Challenge 2023 CVPR 2023
• 2021 1st Hotel-ID to Combat Human Trafficking CVPR 2021, FGVC8
• 2019 1st Google Landmark Retrieval CVPR 2019
• 2019 3rd Google Landmark Recognition CVPR 2019
• 2019 3rd Open Images Instance Segmentation ICCV 2019
• 2015 1st KDD Cup: MOOC Dropout Prediction KDD 2015

Industry

• 2016 2nd Genentech Cervical Cancer Screening
• 2016 3rd Telstra Network Disruptions
• 2016 3rd NOAA Right Whale Recognition
• 2015 1st Springleaf Marketing Response