New Content: Presentations available
Group Photo 
Microbeam Analysis Society (MAS)
2007 Topical Workshop
Hyperspectral Imaging II
Advanced Measurement Laboratory (AML)
October 23-26, 2007 ♦ NIST,
Workshop Sponsors:
Workshop Exhibitors:
Workshop Organizers:
Edward P. Vicenzi Smithsonian Institution
Ian M.
Anderson NIST
Paul Carpenter Washington University
Workshop
Overview
With the development of ever faster detectors, more
powerful computers, and sophisticated data analysis and rendering software,
spectral imaging methods have become ubiquitous and assumed an increasingly
important role in the field of microanalysis.
For example, the new generation of silicon-drift X-ray energy-dispersive
detectors today allows acquisition in the scanning electron microscope per
minute a GByte-sized 256×256-pixel spectral image with sufficient statistics for
robust phase identification. The
importance of these developments extends beyond the obvious practical advantage
of being able to acquire a spectroscopic map of a specimen in the time
allocated to acquire a single point spectrum just a decade ago. These developments enable the efficient
exploration of spectral response across a multi-dimensional coordinate space,
allowing the robust separation of statistically significant variations from
mere fluctuations, the correlation of spectral variations with microstructure
or other physical variations within the coordinate space, and the evaluation of
instrumental contributions to the acquired data. These benefits clearly extend beyond
traditional spectroscopic imaging.
Hyperspectral imaging may be broadly defined as a class of techniques
where data are acquired to fill a multi-dimensional space with a high degree of
redundancy on at least one coordinate axis.
Such techniques share similar challenges, irrespective of the nature of
the coordinate axes defining the hyperspectral image
space. Common coordinate axes are the
dimensions of space-time and their conjugates – spatial (r), temporal (t), reciprocal (q),
and spectral (E) – as for traditional spectral imaging featuring two spatial
and one spectral coordinate. However,
increasingly one or more of the coordinate axes are defined by instrumental
parameters, e.g., specimen tilt for tomography, or defocus for high-resolution
electron microscopy through-focal series reconstruction.
This topical workshop will
explore the state-of-the-art of hyperspectral
imaging, with half-day sessions devoted to key issues that cross-cut
traditional disciplines and techniques:
♦ statistical issues, such as challenges
imposed by limitations in signal-to-noise or signal-to-background, the distinguishing of
characteristic hyperspectral features from statistical fluctuations in the data
and the pre-processing of raw data to best accomplish this task given the
structure of the raw data, or the statistical confidence with which a hypothesis
can be verified for a given data set;
♦ systematic errors, such as
technique-specific artifacts in the data collection process that must be addressed in order for
hyperspectral images to be properly interpreted, for example, distortions in the hyperspectral data,
proper registration of data in serially acquired coordinate systems, and the filtering of spurious
signal that is not representative of the probed specimen;
♦ correlation of data acquired by multiple
complementary techniques, such as the synthesis of data arising from different
microanalytical volumes or sensitive to different specimen attributes (e.g., structural, compositional,
chemical), the proper registration of complementary data sets when the two techniques are
performed serially, or the relative weighting given to complementary techniques for a given analysis
problem; and
♦ the identification of “hyperspectral phases”, spectrally distinct regions of the specimen and their corresponding hyperspectral signatures,
on the basis of a given technique, for example, analysis methods for the identification of distinct phases,
such as principle components analysis or multivariate curve resolution, the interpretation of hyperspectral
signatures, and the generation of quality maps to characterize the confidence level with which phase
identification has been made.
Abstract Submission
Those wishing to make a presentation
at the workshop should send an e-mail to
vicenzie@si.edu, subject line HI-II abstract submission,
containing a presentation title, list of authors
with affilations, and an abstract of no more than 200 words.
Presenters are encouraged to explicitly address one or more of the cross-cutting
issues listed above.
Submitters will be sent a follow-on
e-mail confirming receipt of their abstract.
The date and time of the presentation will be made known to the submitter upon
publication of the full program on October 8, 2007.
Registration
A registration fee of
$130 will cover production of workshop materials, coffee breaks,
and daily lunch. Advance
registration is required to allow prior clearance for access to the NIST
campus. To register, please click here and scroll down to the On-Line Registration link.
Meals
Daily lunch, in addition to
coffee during mid-session breaks, will be provided to workshop
participants as part of the registration fee.
A Welcome Banquet, made possible through the generosity of commercial
sponsors, is also planned for Tuesday evening.
Otherwise, attendees will be responsible for breakfast and dinner arrangements on
their own. The NIST Cafeteria, located
in the
Venue
The workshop will take place
within facilities at the Advanced Measurement Laboratory (AML) at the National
Institute of Standards and Technology (NIST).
The plenary meeting room accommodates 80 participants in classroom style,
to facilitate note-taking, etc. A large
foyer immediately outside of the plenary room will be used to accommodate
posters for in-depth discussions.
Smaller seminar rooms in adjacent space will be available for computer
demonstrations of spectral imaging analysis software, or as quiet working space.
Special for Students and Postdocs
Special consideration will be
given to early career scientists for this workshop:
1. Twenty five percent of the available slots
for participants will be set aside for students and postdocs.
2. Students and postdocs
will be given preferential consideration for pre-workshop demonstrations
held on Tuesday, October 23.
3. The registration fee for students will be
waived, compliments of the Microbeam Analysis Society.
4. Workshop organizers will facilitate shared
accommodations among students and postdocs, in order
to mitigate lodging costs.
Accommodations
A block of rooms has been reserved at the
Courtyard Gaithersburg Washingtonian Center. A special rate of $179 per night plus 12%
tax has been arranged.Please call the hotel directly
at +1 301 527 9000, and let them know that you are attending the NIST Hyperspectral Imaging
Workshop. Students and postdocs wishing to share
accommodations are asked to contact local arrangements coordinator Ian Anderson.A list of other area hotels is available on the NIST website.
Transportation
For participants staying at the Marriott Courtyard Gaithersburg
Washingtonian Center: On the two full days of the workshop (Wednesday
and Thursday), there will be bus service provided between the Marriot and
the NIST Advanced Measurement Laboratory. NIST is located just off Interstate 270,
about 25 miles (40 kilometers) from the center of
Local
Driving Directions to NIST:
From northbound I-270 take Exit
10, Route 117 West,
From southbound I-270 take Exit
11, MD Route 124,
Driving
Directions from Washington Dulles Int’l
Airport (IAD):
When leaving the airport, follow
the Dulles Access Road to the Bethesda/Baltimore entrance ramp to I-495 . Take I-495 (left lane exit) to I-270 North (towards
Driving
Directions from Baltimore-Washington Int’l
Airport (BWI):
When leaving the airport, take
I-195 West. On I-195W take the I-95 South Exit #4B toward
Driving
Directions from Ronald Reagan National
Airport (DCA):
Metro
Access to NIST (Subway)
NIST is accessible via the
Washington Metro system. NIST is closest to the last stop on the Red Line
(Shady Grove station), but it is a ten-minute drive from the Shady Grove
station to the NIST campus. NIST
provides shuttle service for official visitors and staff to and from the Shady
Grove Metro Station. Visitors using Metro can meet the NIST shuttle at the east
side "Kiss & Ride" area of the Shady Grove Metro Station at 15
and 45 minutes past the hour from 8:00 am to 5:30 pm. The shuttle departs from
the front of the
For More Information
Please direct additional
questions concerning the workshop local arrangements coordinator:
Ian M. Anderson
National
e-mail: ian.anderson@nist.gov
tel: +1
301 975 8907
fax:
+1 301 417 1321