We would like to thank all participants of the CYTO2017 Image analysis challenge co-organized by the Cell Atlas team. And congratulate the winner, Dr. Peng Qiu from Georgia Tech, who at the time of the challenge closing had the top solution for both Challenge 2 and Challenge 3.

Though submissions this year were high-quality, and showcased the multitude of approaches to such a challenge, there is still large room for improvements in the results and some sub-challenges remain entirely unsolved. Therefore, we have decided to keep the challenge open for another year! Improvements in downloads and scoring schemes will be made.

Emma Lundberg