Foveation Theory:
We investigate the foveation phenomenon and its
connection to wavelets.
You can go directly to our simple java
demos
which show the potential bandwidth reduction of foveated images.
Thinwire Image Server:
We constructed an active image server over the internet.
The images (e.g., a very high resolution map)
served are too large to be transmitted but the user
can zoom, pan, vary foveation point and resolution of
the viewing window.
Jan 2003: This month's Technology Review Magazine has a short
article about our FovealPoint technology!
GIS on the Web:
Geographical Information Systems (GIS) services
on the internet poses an interesting challenge to
active visualization. An important subproblem
is the multi-resolution modeling of GIS data elements.
Here is our map server demo
based on our Responsitive Zooming Telescope architecture.
Point Location:
Investigation of point location algorithms for GIS data sets.
An important property we want to exploit is the presence
of monotone chains.
Here is a demo.
Tiger Tools:
The TIGER data set is extensively used in our work, and
here we make available useful some tools and processed data sets.
Image Tools:
We address some issues in the
synthesis, manipulation and visualization of images.
Very large (terabyte) size images poses its own set of
problems.
A Different Manhattan Project:
Most challenges in visualization are related to the size and
complexity of the geometric models. We need tools to
create such large models. The Different Manhattan project
addresses the tools for automatic generation of a large city
("Manhattan like") based on statistical parameters.
Volume Visualization:
Volume visualization is an excellent domain for applying
active visualization techniques. The problem of projecting
the original volumetric information into a planar image has
many possible solutions. The challenge is to integrate
these projection operators with dynamic multifoveation.
Profile-based Edge Detection:
An approach to automatic line detection motivated by
the snake approach. We focus on the concept of
``profile forces'' and develop
specialized snake-like construct
that seek out certain classes of profiles.
Auto-Foveating Web Services:
We propose a technique to solve the image transmission
bottleneck in thinwire settings based on foveation and
a web proxy that replaces in-line images with
foveated replicas.
Foveation Theory:
We investigate the foveation phenomenon and its
connection to wavelets.
You can go directly to our simple java
demos
which show the potential bandwidth reduction of foveated images.
Thinwire Image Server:
We constructed an 
GIS on the Web:
Geographical Information Systems (GIS) services
on the internet poses an interesting challenge to
active visualization. An important subproblem
is the multi-resolution modeling of GIS data elements.
Here is our map server demo
based on our Responsitive Zooming Telescope architecture.
Point Location:
Investigation of point location algorithms for GIS data sets.
An important property we want to exploit is the presence
of monotone chains.
Here is a demo.
Tiger Tools:
The TIGER data set is extensively used in our work, and
here we make available useful some tools and processed data sets.
Image Tools:
We address some issues in the
synthesis, manipulation and visualization of images.
Very large (terabyte) size images poses its own set of
problems.
A Different Manhattan Project:
Most challenges in visualization are related to the size and
complexity of the geometric models. We need tools to
create such large models. The Different Manhattan project
addresses the tools for automatic generation of a large city
("Manhattan like") based on statistical parameters.
Volume Visualization:
Volume visualization is an excellent domain for applying
active visualization techniques. The problem of projecting
the original volumetric information into a planar image has
many possible solutions. The challenge is to integrate
these projection operators with dynamic multifoveation.
Profile-based Edge Detection:
An approach to automatic line detection motivated by
the snake approach. We focus on the concept of
``profile forces'' and develop
specialized snake-like construct
that seek out certain classes of profiles.
Auto-Foveating Web Services:
We propose a technique to solve the image transmission
bottleneck in thinwire settings based on foveation and
a web proxy that replaces in-line images with
foveated replicas.