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VISION-LIST Digest Volume 10 Issue 19
VISION-LIST Digest Tue Apr 23 11:47:36 PDT 91 Volume 10 : Issue 19
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Today's Topics:
Realtime stereo machine?
Looking for information on facial expression analysis
Range Data + Model
Sequence of calibrated motion images
Feature Recognition from B-Rep or CSG Solid Object Models
Request for info about imaging equip
Re: Image Compression algorithms
3D Image-Model Matching
Looking for recent literature on vision systems
CFP: Biomedical Image Processing III and 3-D Microscopy
Industrial Vision Metrology Conference
----------------------------------------------------------------------
Date: 23 Apr 91 16:28:51 GMT
From: tnaka@ius3.ius.cs.cmu.edu (Tomoharu Nakahara)
Organization: Carnegie-Mellon University, CS/RI
Subject: Realtime stereo machine?
Does anyone know the high-performance, practical, realtime stereo system
which uses only cameras? And I want to know the processing time and
the range resolution of the system.
Thanks in advance.
Tomoharu Nakahara
Carnegie-Mellon University
e.mail:tnaka@ius3.ius.cs.cmu.edu
------------------------------
Date: Mon, 22 Apr 91 23:59:47 EDT
From: Rich Miner <miner@ulowell.ulowell.edu>
Subject: Looking for information on facial expression analysis
I am interested in information on facial pattern recognition, (ie smile,
smirk, ...). If you have any pointers to papers or work in this are
please drop me a note, I can repost of there is interest.
Richard A. Miner miner@ulowell.edu
Research Manager University of Lowell
(508)934-2630 Center for Productivity Enhancement
------------------------------
Date: Sat, 20 Apr 91 03:47:23 GMT
From: schoi@rodan.acs.syr.edu
Subject: Range Data + Model
Organization: Syracuse University, Syracuse, NY
Several people here at Syracuse University under the direction of
Professor Minsoo Suk are currently involved with 3-D object recognition.
Are there anybody who has a range database suitable for object
recognition research ( i.e. range data of one or more objects of
various type along with their "model" to be matched), or knows someone
who might have such a database? We will be grateful of your information.
------------------------------
From: taalebi@ai.mit.edu (Ali Taalebi)
Date: Thu, 18 Apr 91 00:11:34 edt
Subject: Sequence of calibrated motion images
In order to test a few motion vision algorithms,
I am looking for sequences of CALIBRATED motion images
(calibrated focal lenghth and principal point.)
Any reference to any possible source will be appreciated.
[ This request for data requires a calibrated camera. I would
very much like to add *calibrated* camera data to the Vision List
Archive. Please contact me if you can provide such data at
vision-list-request@ads.com .
phil... ]
Thanks.
__ _ Ali Taalebi
/ ) // MIT AI Lab.
/- -/ // o Room NE43-753
/ /_</_<_ (617) 253-8005
ali@ai.mit.edu
------------------------------
Date: 19 Apr 91 23:27:43 GMT
From: "Michael G Koopman" <mgkst1@unix.cis.pitt.edu>
Organization: University of Pittsburgh
Subject: Feature Recognition from B-Rep or CSG Solid Object Models
Keywords: Feature recognition, Solid Models, CSG, B-Rep
I am interested in the latest references regarding attempts to define,
classify and recognize three-dimensional solid features. I am not
interested in image analysis and should not need to be concerned about
permuted images, besides isomerism. The problem I wish to address is
the classification of solid objects for which a boundary representation,
or preferably a constructive solids geometry representation exists. I
am aware of the work by K. Spies (1957 Ph.D. Thesis, Technical
University Hannover), primarily through the work of Taylan Altan and
other principals at Battelle. The concept of 'shape groups' is then one
avenue in which I have interest.
I am looking for algorithms for the determination of the types of
descriptions of solids which people can determine. For example, long and
slender, fat and short, long and wide, thin and twisted come to mind as
types of classifications (albeit with no apparent formalism in design).
Of importance, the application of scaling techniques to reduce the number
features (primitives?) in the description without losing the overall
shape and the major characteristics of a solid. One of the types of
results would be identification of an axisymmetric, or nearly so,
solid or solid segment.
Also, the determination of local features of a solid is of interest. An
article by Hiroshi Sakurai and David C. Gossard (MIT), Recognizing Shape
Features in Solid Models, IEEE Computer Graphics and Applications, Sept.
1990 conveys the meaning of what I have identified as "local features"
better than I am able. In this case, a combination of facts from a B-rep
graph (e.g. solid angles, adjacency) is graphed and such graphs matched
to known features. (I have done grave injustice to this work, my
apologies). A type of result to which this leads is identification of
such features as through holes or sharp edges. Cuningham and Dixon at the
University of Amherst and Mark Henderson of the University of Arizona have
made progress in these areas.
I am interested in any references, comments, "unbending laws of nature",
suggestions, etc. which you are willing to share. I will attempt to
create a compendium of these ideas for posting to the net. With all of
the good, free ideas I expect to collect this compendium of commentaries
should need to be compressed and 'ftp'-ed from a server :-)
With Thanks,
Mike Koopman (<mgkst1@unix.cis.pitt.edu>)
MTI
1450 Scalp Avenue
Johnstown, PA 15904 USA
------------------------------
Date: Thu, 18 Apr 91 12:36:09 CDT
From: reich@ser.unl.edu (Stephen E. Reichenbach)
Subject: request for info about imaging equip
Two requests for information:
1) We are set to equip an imaging lab with (e.g. Sun) workstations
and would appreciate any comments about others' experiences
(interface, performance, cost, problems) or suggestions.
The equipment will include:
a) Camera, analog or digital output. We will also
need a frame grabber if we get analog (video)
output.
b) Hardcopy, probably both a film recorder and printer.
Tenatively, we are leaning toward a color dye
sublimation printer, but are not very knowledgable
about the many imaging printer technologies.
We must have 256 gray levels and would like 16.7M
colors.
2) Matrix sells film writers for MACs with SCSI interface. They
provide a driver for the MAC, but not for other systems.
Has anyone else written a SCSI driver for Matrix cameras
that they could provide us? If not, would writing one
be difficult for a non-systems person?
I will provide a summary of the responses to anyone who requests one.
Stephen E. Reichenbach
Computer Science and Engineering Dept.
University of Nebraska--Lincoln
Lincoln, NE 68588-0115
Ferguson Hall 304
(402) 472-5007
Fax: (402) 472-7767
email: reich@fergvax.unl.edu
------------------------------
Date: Sat, 20 Apr 91 22:06:13 -0500
From: Steve Eddins <eddins@uicbert.eecs.uic.edu>
Subject: Re: Image Compression algorithms
Richard Hubert writes:
>Take a look at the JPEG ISO imaging compression standard that will be
>completed by this fall.
...
>It uses frequency domain transformations (Adaptive Discrete Cosing Transform)
>to reach lossless compression levels of at least 20:1 and decimated
>compression of 40:1. If your looking for something simpler, there are lots
>of public domain tools to reach a compression of 2:1 or so.
Curiously enough, I just received a copy of the 8/14/90 draft standard
today. I'm not sure exactly what he means by "decimated compression,"
but I believe the statements regarding lossless compression are
inaccurate on two points:
* DPCM, not ADCT, is used for lossless coding.
* A lossless compression ratio figure of 20:1 is too high.
Here are a few lines from Section 5 (Overview) of the draft standard:
"Two classes of compression algorithms are defined, a set based on the
two-dimensional discrete cosine transform (DCT) and a set based on
spatial prediction techniques. The DCT based algorithms are intended
to give output image quality relative to the source images ranging
from very good to excellent (visually indistinguishable for typical
viewing conditions). The spatial algorithms use differential pulse
code modulation (DPCM) techniques, and are intended primarily for
lossless coding.
...
The compression achieved with these algorithms is dependent on the
characteristics of the images being compressed. For the color images
of natural scenes which have been used for testing and development of
the algorithms, recognizable images are obtained at about 0.15 bits
per pixel and useful images are obtained at about 0.25 bits per pixel.
At 0.75 bits per pixel are typically of very good quality, and at
about 1.5 bits per pixel or less the images are essentially
indistinguishable from the original source images. Lossless coding is
obtained at about 2:1 compression for these test images. All of these
ratios are based on tests of 4:2:2 CCIR 601 format Y,Cb,Cr color
images with an average of 16 bits per pixel."
Steve Eddins
eddins@uicbert.eecs.uic.edu (312) 996-5771 FAX: (312) 413-0024
University of Illinois at Chicago, EECS Dept., M/C 154, 1120 SEO Bldg,
Box 4348, Chicago, IL 60680
------------------------------
Date: 19 Apr 91 16:07:20 GMT
From: perry@beno.CSS.GOV (John Perry)
Subject: 3D Image-Model Matching
Keywords: image processing, computer vision, 2D/3D vision
I am interested in obtaining some references on papers, etc. on matching
a 3D depth map obtained from stereo images with a 3D model (CAD, etc.) in
order to obtain an estimate of the deformation of a 3D object. Any information
is greatly appreciated.
Thanks,
- John
------------------------------
Date: Sat, 20 Apr 91 14:40:15 GMT
From: cl7544@csc.albany.edu (Cole G. Libby)
Subject: Looking for recent literature on vision systems
Organization: University of NY at Albany
I'm seeking references to recent literature on visions systems. Specifically,
I'm interested in the major problems computer vision presents and a variety
of proposed solutions to those problems.
Can any one e-mail me references to the important works in the field?
Cole Libby
cl7544@leah.albany.edu
------------------------------
Date: Thu, 18 Apr 91 12:18:19 EDT
From: Dr Dmitry Goldgof <goldgof@gasparilla.csee.usf.edu>
Subject: CFP: BIOMEDICAL IMAGE PROCESSING III AND 3-D MICROSCOPY
CALL FOR PAPERS
BIOMEDICAL IMAGE PROCESSING III AND 3-D MICROSCOPY
Part of 1992 SPIE/SPSE Symposium on Electronic Imaging
February 9-14, 1992, San Jose, California
The large variety of imaging modalities for the exploration of objects
of biomedical interest has led to the necessity for solving many
problems related to the specific characteristics of the radiation and
sensing apparatus used. Acquired biomedical images typically suffer
from degradation related to the physical limitations of the imaging
device. These degradations serve to complicate the generic goals of
analysis and interpretation. This conference is devoted to the
presentation of new techniques directed towards the improved
interpretation (interactive or automated) of biomedical images
obtained from practical systems. Papers are colicited which detail
methods for reconstructing images from partial information, for
correcting image defects, or for effectively
extracting/analyzing/interpreting practical images of biomedical
interest.
This conference will also explore the rapidly developing field of
three-dimensional microscopy. Consideration will be given to the
characteristics of the overall system design, including the
illuminating source, imaging optics and electronics sensors as well as
to digital methods for producing and displaying the resulting 3-D
reconstruction. Recent innovations in microscopy are having a large
impact especially in the biological and medical fields. Because these
microscopes are now fully integral systems incorporating both optical
and electronic elements, it is hoped that the broad range of relevant
topics being presented at this symposium will serve to encourage
interactions among instrumentation engineers, computer image analysts
and biological and medical researchers.
Papers are invited in the following and related areas:
Biomedical Image Processing
- Image reconstruction
- Image restoration and enhancement
- Feature enhancement and extraction in biomedical images
- Biomedical image analysis and interpretation
- Multi-dimensional biomedical image processing
- Motion analysis in biomedical images
3-Dimensional Microscopy
- Confocal Microscopy
- 3-D and time-resolved image acquisition systems
- Hybrid optical/electronic image processing systems
- 3-D image processing and analysis
- 3-D image reconstruction
- Spatio-temporal reconstruction of living cells and tissues
- Image visualization techniques for 3-D microscopy systems
Submissions:
Please send 4 copies of a 200-word abstract and a brief
biography by July 15, 1991 to:
SPIE/SPSE Technical Program Committee:
Electronic Imaging: Science and Technology 1992
P.O. Box 10, Bellingham, WA 98227-0010 USA
Shipping Address: 1000 20th St., Bellingham, WA 98225
Telephone: 206/676-3290 (Pacific Time); Telex 46-7053
Telefax: 206/647-1445; OPTO-LINK 206/733-2998
Please include the author(s) name(s), company name, complete address
and telephone/telex/telefax numbers (principal author first), and
clearly designate for which conference within symposium the abstract
is intended. For more information contact SPIE/SPSE or Conference
Chairs below.
Important dates:
Applicants will be notified of acceptance by mid-November.
Camera-ready abstact is due December 2, 1991
Manuscript is due January 13, 1992
Conference Chairs:
Dr. Carol J. Cogswell
Physical Optics Department
The University of Sydney
NSW Australia 2006
Dr. Dmitry B. Goldgof
Department of Computer Science and Engineering
University of South Florida
Tampa, Florida 33620-5350
Internet: goldgof@sol.csee.usf.edu
Dr. Raj Acharya
Department of Electrical and Computer Engineering
State University of New York at Buffalo
Buffalo, New York 14260
Internet: acharya@eng.buffalo.edu
------------------------------
Date: Tue, 23 Apr 91 10:30 EST
From: ELHAKIM%NRCCIT.NRC.CA@VM.NRC.CA
Subject: Industrial Vision Metrology Conference
Final Announcement
INTERNATIONAL CONFERENCE ON
INDUSTRIAL VISION METROLOGY
Location: The Canadian Institute for Industrial Technology
435 Ellice Ave., Winnipeg, Manitoba, Canada
Date: July 11-12, 1991
Organized by:
-International Society for Photogrammetry & Remote Sensing
Commission V: Close-Range Photogrammetry and Machine Vision
WG V/1: Digital and Real-time Close-range Photogrammetry Systems
-National Research Council of Canada
Proceeding published by:
SPIE- The International Society for Optical Engineering
Cooperating organizations:
SPIE
ASPRS- American Society for Photogrammetry & Remote Sensing
Focusing on:
Industrial applications of metric vision techniques
Demonstrations of several systems will be given.
Who should attend and why:
Machine vision researchers and potential users of vision systems
for industrial metrology applications. The conference will encourage
discussions and debates of issues by allowing longer discussion
times. Papers are encouraged to include as much details as possible
(up to 20 pages).
Technical Program:
TS1: Gauging with Machine Vision:
-A.Novini (USA),"Fundamentals of on-line gauging with machine vision"
-K.Wong,et al (USA),"3-D gauging with stereo computer vision"
-D.Fritsch (Germany),"Reconstruction of a sub-reflector by digital
photogrammetric methods"
TS2: Accuracy Analysis:
-P.Gustafson (USA),"An accuracy/repeatability test for a video
photogrammetric measurement"
-A.Gruen,et al (Switzerland),"High accuracy edge matching with an
extension of the MPGC-matching algorithm"
-G.Derkson,et al (Canada),"Improved accuracy by camera movement"
TS3: Surface/Object Reconstruction:
-H.G.Maas (Switzerland),"Automated surface reconstruction with
structured light"
-A.Schenk (USA),"Reconstructing visible surface from stereo"
-R.Daher,et al (Canada),"Implementation of a 3-D stereo vision system
for the production of customized orthotic accessories"
TS4: Camera and System Calibration
-E.Bruzzone,et al (Italy),"Calibration of a CCD camera on a hybrid
coordinate measuring machine for industrial metrology"
-S.MacLean,et al (Canada),"Calibration of the space vision system SVS"
-R.Lenz (Germany),"Geometrical and radiometrical signal transfer
characteristics of a color CCD camera with 21 million pixels"
TS5: System Applications I:
-H.Beyer (Switzerland),"Automated dimensional inspection of cars in
crash tests with digital photogrammetry"
-D.Chapman,et al (UK),"A remote measuring system for the mapping of
hazardous environments (HAZMAP)"
-A.Hassan,et al (Malaysia),"Deformation study using photogrammetric
and multispectral analysis methods"
-Z.Delecki,et al (Canada),"A nonoptical noncoherent imaging in
industrial testing"
TS6: System Applications II:
-S.Godber,et al (UK),"Three-dimensional machine vision using line-scan
sensors"
-M.Chapman,et al (Canada),"Storing and managing three-dimensional
digital medical image information"
-D.Zawieska,et al (Poland),"Moire technique in medical diagnosis and
control of rehabilitation"
-S.EL-Hakim (Canada),"Performance of a stereo vision dimensional
measuring system"
SEND REGISTRATION FORM TO:
Industrial Vision Metrology Conference
c/o National Research Council
435 Ellice Avenue
Winnipeg, Manitoba, Canada R3B 1Y6
tel:(204) 983-5056 / Fax:(204) 983-3154
email:elhakim@nrccit.nrc.ca or elhakim@ciitip.ciit.nrc.ca
-------------------------------------------------------------------------
Name:............................................................
Organization:....................................................
Title:...........................................................
Address:.........................................................
.................................................................
Tel:............................ Fax:.......................
Hotel: ....-yes ....-no
room: ....-single ....-double
dates:....................................
Payment:
.... - $180. (Canadian) enclosed, (student $50), or
.... - pay upon arrival
Fees include: Proceedings, reception, banquet, lunches and coffee. Student
include proceedings, lunches and coffee only.
------------------------------
End of VISION-LIST digest 10.19
************************
