Computational Vision: My
long-term goal is to model an image-understanding system mimicking human
categorization and search performance. The overall approach is motivated by a
number of perceptual and cognitive studies and is summarized in a monograph I
have written a few years ago. In the mean time, I developed an elaborate decomposition process, whose output
can be used to classify (categorize) and search images to some degree. The
decomposition also bears the potential for improving other applications, such
as image retrieval and object detection algorithms. To work towards a perfectly
categorizing system, the next hurdle is to develop grouping and learning
methodology, which automatically acquires category representations. To move
toward a complete image-understanding system, a framework needs to be invented,
which efficiently represents and accesses scene knowledge.
[link to
image classification]
shows results from image classification (categorization), searches and
sorting.
[link to COREL
category labels]
contains info about the labeling of the COREL image classes.
[link to visual
search]
discusses search aspects (e.g., regions of interest).
Applied Visual Perception: Human-computer interaction at visual interfaces, such as the PC
monitor, is still relatively awkward.
The interaction could be easily improved if human gaze position were tracked
and guided toward task-relevant locations (Barth
et al 2006). To realize that in practice, it requires a
good concept of how to read the user’s attention and how to generate the
appropriate process of gaze guidance. I have assembled a list of aspects, which
allows me to systematically approach this issue, and I have carried out basic
eye-movement research to investigate some of these aspects in detail. Some of
my applied ideas are presently implemented in collaboration with Michael Dorr at the
[link to gaze
guidance] surveys
my part of the research collaboration.
[link to applied
project] a
gaze-recapturing editor cursor (GREC) to improve text-editing on a PC monitor.
[link to saccadic
target selection] an
analysis of saccadic target selection.
[link to project
website] 5
different European labs are involved.