NTI has licensed and is now developing and marketing commercial
versions of two technologies invented at the University of
1. Multiresolution image querying
This technology provides a new way to search or browse through
image databases at high speed. In this invention, the query is
either as a low-resolution image from a scanner or video camera
or as a
rough sketch painted by the user. The searching algorithm makes
multiresolution (wavelet) decompositions of the query and
images. The method is both effective and fast.
2. Color-matched duotones
This is a new approach for reproducing color images (patent
Rather than mapping the colors in an image onto the gamut of
can be printed with cyan, magenta, yellow, and black inks, the
chooses the best set of printing inks for the particular image
The first version of this technology looks at the special case of
inks for duotone printing, a relatively inexpensive process in
two inks are used. Specifically, the system takes an image as
allows a user to select 0, 1, or 2 inks. It then chooses the
remaining ink or
inks so as to reproduce the image as accurately as possible and
the appropriate color separations automatically.
The system can also accommodate the incorporation of black ink
color of the paper the image will be printed on.