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Semantic override of low-level features in image viewing - both initially and overall

Nyström, Marcus LU and Holmqvist, Kenneth LU (2008) In Journal of Eye Movement Research 2(2). p.1-11
Abstract
Guidance of eye-movements in image viewing is believed to be controlled by

stimulus driven factors as well as viewer dependent higher level factors such as task

and memory. It is currently debated to what proportions these factors contribute

to gaze guidance, and also how they vary over time after image onset. Overall, the

unanimity regarding these issues is surprisingly low and there are results supporting

both types of factors as being dominant in eye-movement control under certain

conditions. We investigate in this paper how low, and high level factors influence eye

guidance by manipulating contrast statistics on images from three different semantic

categories and... (More)
Guidance of eye-movements in image viewing is believed to be controlled by

stimulus driven factors as well as viewer dependent higher level factors such as task

and memory. It is currently debated to what proportions these factors contribute

to gaze guidance, and also how they vary over time after image onset. Overall, the

unanimity regarding these issues is surprisingly low and there are results supporting

both types of factors as being dominant in eye-movement control under certain

conditions. We investigate in this paper how low, and high level factors influence eye

guidance by manipulating contrast statistics on images from three different semantic

categories and measure how this affects fixation selection. Our results show that the

degree to which contrast manipulations affect fixation selection heavily depends on

an image’s semantic content, and how this content is distributed over the image.

Over the three image categories, we found no systematic differences between contrast

and edge density at fixated location compared to control locations, neither during the

initial fixation nor over the whole time course of viewing. These results suggest that

cognitive factors easily can override low-level factors in fixation selection, even when

the viewing task is neutral. (Less)
Please use this url to cite or link to this publication:
author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
semantic information dispersion, bottom-up, Image viewing, top-down, contrast manipulation
in
Journal of Eye Movement Research
volume
2
issue
2
pages
1 - 11
publisher
European Group for Eye Movement Research
ISSN
1995-8692
language
English
LU publication?
yes
id
f4319810-8e36-4538-9563-1758b3360608 (old id 1222707)
date added to LUP
2008-09-01 12:43:24
date last changed
2016-11-09 14:44:17
@misc{f4319810-8e36-4538-9563-1758b3360608,
  abstract     = {Guidance of eye-movements in image viewing is believed to be controlled by<br/><br>
stimulus driven factors as well as viewer dependent higher level factors such as task<br/><br>
and memory. It is currently debated to what proportions these factors contribute<br/><br>
to gaze guidance, and also how they vary over time after image onset. Overall, the<br/><br>
unanimity regarding these issues is surprisingly low and there are results supporting<br/><br>
both types of factors as being dominant in eye-movement control under certain<br/><br>
conditions. We investigate in this paper how low, and high level factors influence eye<br/><br>
guidance by manipulating contrast statistics on images from three different semantic<br/><br>
categories and measure how this affects fixation selection. Our results show that the<br/><br>
degree to which contrast manipulations affect fixation selection heavily depends on<br/><br>
an image’s semantic content, and how this content is distributed over the image.<br/><br>
Over the three image categories, we found no systematic differences between contrast<br/><br>
and edge density at fixated location compared to control locations, neither during the<br/><br>
initial fixation nor over the whole time course of viewing. These results suggest that<br/><br>
cognitive factors easily can override low-level factors in fixation selection, even when<br/><br>
the viewing task is neutral.},
  author       = {Nyström, Marcus and Holmqvist, Kenneth},
  issn         = {1995-8692},
  keyword      = {semantic information dispersion,bottom-up,Image viewing,top-down,contrast manipulation},
  language     = {eng},
  number       = {2},
  pages        = {1--11},
  publisher    = {ARRAY(0x54648d0)},
  series       = {Journal of Eye Movement Research},
  title        = {Semantic override of low-level features in image viewing - both initially and overall},
  volume       = {2},
  year         = {2008},
}