| Although Optical Spatial
Filtration has been known for over 25 years, it has received
little attention due to the lack of suitable devices with which
to implement systems. Hudson Research has pioneered the use of
interactive electro-optic devices to allow real-time operations
on complex data streams in the Fourier Domain. Techniques have
been developed which enable filters to be weighted for specific
functions or they can be built as linear interactive devices.
The drawing below shows a typical device. The dynamic range of
these devices is at least 12 bits, and 16 bit dynamic range can
be achieved in a properly structured system. CONTACT US
 Figure 1 Optical Spatial Filter
The
following images show the results of the use of the filter of
Figure 1.
Figure 2.
Unprocessed
and
Processed Images
These
coronary angiograms show the difference in visibility of blood
vessels
filled with contrast media. |
