FG Computer Graphics

4 Items

Recent Submissions
A consensus-based elastic matching algorithm for mapping recall fixations onto encoding fixations in the looking-at-nothing paradigm

Wang, Xi ; Holmqvist, Kenneth ; Alexa, Marc (2021-03-22)

We present an algorithmic method for aligning recall fixations with encoding fixations, to be used in looking-at-nothing paradigms that either record recall eye movements during silence or want to speed up data analysis with recordings of recall data during speech. The algorithm utilizes a novel consensus-based elastic matching algorithm to estimate which encoding fixations correspond to later ...

Computational discrimination between natural images based on gaze during mental imagery

Wang, Xi ; Ley, Andreas ; Koch, Sebastian ; Hays, James ; Holmqvist, Kenneth ; Alexa, Marc (2020-08-03)

When retrieving image from memory, humans usually move their eyes spontaneously as if the image were in front of them. Such eye movements correlate strongly with the spatial layout of the recalled image content and function as memory cues facilitating the retrieval procedure. However, how close the correlation is between imagery eye movements and the eye movements while looking at the original ...

Exploring perception through the eyes

Wang, Xi (2020)

Everyday a huge amount of visual information enters the human brain through the eyes; meanwhile, a considerable amount of information is revealed by the eyes. The unique yet complex combination of the various roles of the eyes offer valuable opportunities to understand human perception, cognitive processing (e.g. visual search, recognition, and decision making), as well as mental states, and to...

The mean point of vergence is biased under projection

Wang, Xi ; Holmqvist, Kenneth ; Alexa, Marc (2019-09-09)

The point of interest in three-dimensional space in eye tracking is often computed based on intersecting the lines of sight with geometry, or finding the point closest to the two lines of sight. We first start by theoretical analysis with synthetic simulations. We show that the mean point of vergence is generally biased for centrally symmetric errors and that the bias depends on the horizontal ...