The Institute Colloquium: (Joint) segmentation and tracking with applications in biol
Date:
Monday, May 4, 2015 16:30 - 17:30
Speaker:
Fred Hamprecht (University of Heidelberg)
Location:
Raiffeisen Lecture Hall, Central Building
Series:
Institute colloquium
Contact:
ELLER Arinya
The tracking of an unknown number of divisible cells, or of indistinguishable larvae, is an intriguing problem with important applications in developmental biology, ethology and beyond. I will show some of the best current approaches to solving this problem: firstly, a tracking-by-assignment approach that tries to detect all targets and then links them up while making allowance for undersegmentation, false positive detections and divisions. Secondly, I will present a model that addresses the detection and assignment steps jointly. Both formulations lead to difficult combinatorial optimization problems that can be solved to optimality for modestly sized instances. Finally, I will demo the former model, which is available as a workflow in the open source "ilastik" package; and will show a possible strategy to identify the less confident parts of a structured prediction for targeted proofreading.