Enforcing Monotonic Temporal Evolution in Dry Eye Images

We address the problem of identifying dry areas in the tear film as part of a diagnostic tool for dry-eye syndrome. The requirement is to identify and measure the growth of the dry regions to provide a time-evolving map of degrees of dryness. We segment dry regions using a multi-label graph-cut algorithm on the 3D spatio-temporal volume of frames from a video sequence. To capture the fact that dryness increases over the time of the sequence, we use a time-asymmetric cost function that enforces a constraint that the dryness of each pixel monotonically increases. We demonstrate how this increases our estimation's reliability and robustness. We tested the method on a set of videos and suggest further research using a similar approach.

• Type: Conference
• Year: 2009
• Where: MICCAI
• Authors: Tamir Yedidya, Peter Carr, Richard Hartley, Jean-Pierre Guillon
• Keywords: Dry Areas, Dryness Increases, Medical Imaging, MICCAI 2009, Segment Dry Regions