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M. Shreve, N. Jain, D. Goldgof, S. Sarkar, W. Kropatsch:
"Evaluation of Facial Reconstructive Surgery on Patients with Facial Palsy using Optical Strain";
Talk: CAIP 2011 - 14th International Conference on Computer Analysis of Images and Patterns, Sevill, Spanien; 2011-08-29 - 2011-08-31; in: "The 14th International Conference on Computer Analysis of Images and Patterns (CAIP), volume 6854 of Lecture Notes in Computer Science", Proc. CAIP 2011 - 14th International Conference on Computer Analysis of Images and Patterns, LNCS 6854, Ainhoa Berciano et al. Eds./Springer, Seville, Spanien (2011), ISBN: 978-3-642-23671-6; 512 - 519.

We explore marker-less tracking methods for the purpose of
evaluating the efficacy of facial re-constructive surgery on patients with
facial palsies. After experimenting with several optical flow methods, we
choose an approach that results in less than 2 pixels in tracking error for
15 markers tracked on the face. A novel method is presented that utilizes
the non-rigid deformation observed on facial skin tissue to visualize the
severity of facial paralysis. Results are given on a dataset that contains
three videos of an individual recorded using a standard definition camera
both before and after undergoing facial reconstructive surgery over a
period of three years.

Optical Flow, Optical Strain, Facial Palsy, Facial Reconstructive Surgery.