Eye movement research

Eye movement can be measured non-invasively and accurately by calculating the corneal reflection of an infrared light and the centre of the pupil, this is known as videooculography.

Visual Search in Diagnosis

The use of the spatio-temporal characteristics of human visual search, together with the intrinsic visual features of the fixation points, as the basis for domain knowledge representation. The use of eye tracking facilitates the systematic definition of diagnostic features and extraction of relevant knowledge from a visual domain.

Perceptual Intelligence in Surgery

The advent and accelerated adoption of laparoscopic surgery requires an objective assessment of both operative performance and perceptual events that lead to clinical decisions. A framework is presented to extract the underlying strategy through the analysis of saccadic eye-movements that lead to visual attention, and identification of intrinsic features central to the execution of basic laparoscopic tasks.

Gaze Contingent Robotic Control

The use of real-time binocular eye tracking for empowering the robots with human vision using knowledge acquired in situ, thus simplifying, as well as enhancing, robotic control in surgery. By utilizing the close relationship between the horizontal disparity and the depth perception, varying with the viewing distance, we demonstrate how vergence can be effectively used for recovering 3D depth at the fixation points and further be used for adaptive motion stabilization during surgery.

For further information, please contact Julian Leong at j.leong@imperial.ac.uk