Manuela Waldner
Guiding Attention in Complex Visualizations using Flicker,
17. November 2017, Czech Technical University
Information
- Publication Type: Invited Talk
- Workgroup(s)/Project(s):
- Date: 17. November 2017
- Event: S&T Cooperation Austria-Czech Republic
- Location: Czech Technical University
Abstract
Drawing the user’s gaze to an important item in an image or a graphical user interface is a common challenge. Usually, some form of highlighting is used, such as a clearly distinct color or a border around the item. Flicker is also a strong visual attractor in the entire visual field, without distorting, suppressing, or adding any scene elements. While it is very salient, it is often perceived as annoying. In this talk, I will present our research on how flicker can be used as attention guidance technique in cluttered visualizations while lowering its negative side-effects. In particular, I will first present results of studies examining a two-stage flicker technique for dynamic visualizations on large displays. Then, I will present we our explorations of high frequency flicker (60 to 72 Hz) to guide the user’s attention in images. At such high frequencies, the critical flicker frequency (CFF) threshold is reached, which makes the flicker appear to fuse into a stable signal. However, the CFF is not uniform across the visual field, but is higher in the peripheral vision at normal lighting conditions. We show that high frequency flicker, using personalized attributes like patch size and luminance, can be easily detected by observers in the peripheral vision, but the signal is hardly visible in the foveal vision when users directly look at the flickering patch. We demonstrate that this property can be used to draw the user’s attention to important image regions using a standard high refresh-rate computer monitor with minimal visible modifications to the image.Additional Files and Images
No additional files or images.
Weblinks
No further information available.BibTeX
@talk{Waldner_2017_11,
title = "Guiding Attention in Complex Visualizations using Flicker",
author = "Manuela Waldner",
year = "2017",
abstract = "Drawing the user’s gaze to an important item in an image
or a graphical user interface is a common challenge.
Usually, some form of highlighting is used, such as a
clearly distinct color or a border around the item. Flicker
is also a strong visual attractor in the entire visual
field, without distorting, suppressing, or adding any scene
elements. While it is very salient, it is often perceived as
annoying. In this talk, I will present our research on how
flicker can be used as attention guidance technique in
cluttered visualizations while lowering its negative
side-effects. In particular, I will first present results of
studies examining a two-stage flicker technique for dynamic
visualizations on large displays. Then, I will present we
our explorations of high frequency flicker (60 to 72 Hz) to
guide the user’s attention in images. At such high
frequencies, the critical flicker frequency (CFF) threshold
is reached, which makes the flicker appear to fuse into a
stable signal. However, the CFF is not uniform across the
visual field, but is higher in the peripheral vision at
normal lighting conditions. We show that high frequency
flicker, using personalized attributes like patch size and
luminance, can be easily detected by observers in the
peripheral vision, but the signal is hardly visible in the
foveal vision when users directly look at the flickering
patch. We demonstrate that this property can be used to draw
the user’s attention to important image regions using a
standard high refresh-rate computer monitor with minimal
visible modifications to the image.",
month = nov,
event = "S&T Cooperation Austria-Czech Republic",
location = "Czech Technical University",
URL = "https://www.cg.tuwien.ac.at/research/publications/2017/Waldner_2017_11/",
}