Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!uunet!decwrl!ucbvax!ADS.COM!Vision-List-Request From: Vision-List-Request@ADS.COM (Vision-List moderator Phil Kahn) Newsgroups: comp.ai.vision Subject: Vision-List delayed redistribution Message-ID: <9008100401.AA07453@deimos.ads.com> Date: 9 Aug 90 22:11:53 GMT Sender: daemon@ucbvax.BERKELEY.EDU Reply-To: Vision-List@ADS.COM Distribution: inet Organization: The Internet Lines: 721 Approved: vision-list@ads.com Vision-List Digest Thu Aug 09 14:11:54 PDT 90 - Send submissions to Vision-List@ADS.COM - Send requests for list membership to Vision-List-Request@ADS.COM Today's Topics: Suppliers of real time digital video display equipment ?? Gould image processor for trade A bug in PBM software ( .pcx => pbm) Research Associate post in Neural Networks and Image Classification New book CVPR-91 CALL FOR PAPERS Vision Conference Summary of Computer Controllable Lenses (long) ---------------------------------------------------------------------- Date: Tue, 7 Aug 90 09:17:24 +0200 From: jonh@tele.unit.no Subject: Suppliers of real time digital video display equipment ?? Hi! Does anybody know of any suppliers of equipment for real time display of digitized video sequences? Here is some background: Our signal processing group has for some time been involved in in research work in still image coding and to a lesser extent in coding of image sequences. As we are planning to increase our activities in the coding of image sequences, we are contemplating on acquiring equipment for real time display digitized sequences, both monochrome and color. All the coding algoriths will be runnning on a network of SUN SPARC stations. We are planning to work on various image formats ranging from 352x288 pels and up to HDTV resolution and at various frame rates. Also, we would prefer equipment that is based on RAM rather than real-time disks. Any advice would be greately appreciated! John Haakon Husoy The Norwegian Institute of Technology Department of Electical and Computer Engineering 7034 Trondheim - NTH NORWAY email: jonh@tele.unit.no tel: ++ 47 + 7 + 594453 fax: ++ 47 + 7 + 944475 ------------------------------ Date: 8 Aug 90 16:40:35 GMT From: hughes@azroth.csee.usf.edu (Ken Hughes) Subject: Gould image processor for trade Organization: University of South Florida, College of Engineering The department of Computer Science and Engineering here has a Gould IP8400 image processor that they are considering decomissioning and selling. It was suggested to us that instead of selling this system we might consider trading it with another organization for a mobile robot platform somewhere along the lines of a Cybermation robot. If you or someone you know might be interested in stch a trade, please contact me via e-mail. Ken Hughes (hughes@sol.csee.usf.edu) | "If you were happy every day of sysadm (root@sol.csee.usf.edu) | your life you wouldn't be human, Dept of Comp Sci and Eng | you'd be a game show host." University of South Florida | Winona Ryder, in "Heathers" ------------------------------ Date: Tue, 7 Aug 90 20:03:07 GMT From: brian@ucselx.sdsu.edu (Brian Ho) Subject: A bug in PBM software ( .pcx => pbm) Organization: San Diego State University Computing Services I have found a bug (may not appear in other system) in the PBM software. The bug is in the program which converts a .PCX (paint brush image format) to a Pbm portable bitmap. The bug (very small) appear at line 102 in program "pcxtopbm.c" which is under /pbmplus/pbm/. The orignal code read : if (b & 0xC0 == 0xC0) .. .. However, some system (e.g. Sun 3/50) does not like this. It miss interpret it as if (b & (OxCO == 0xC0) .. .. Therefore, I have simply put a parentesis around the '&' clause if ((b & OxC0) == 0xC0) .. .. and it works Great!!!!!!! I don't if it (the bug) appears in other system.. keep me posted... my E-mail address is brian@yucatec.sdsu.edu eden@cs.sdsu.edu ------------------------------ Date: 6 Aug 1990 12:35:37 GMT From: austin@minster.york.ac.uk Subject: Research Associate post in Neural Networks and Image Classification University of York Departments of Computer Science, Electronics and Psychology Research Associate post in Neural Networks and Image Classification Applications are invited for a three year research associ- ateship within the departments of Computer Science, Elec- tronics and Psychology on a SERC image interpretation research initiative. Applicants should preferably have pro- gramming and research experience of image interpretation, neural networks and psychology. The project is aimed at the development of neural models of classification tasks and involves characterizing the processes involved in learning and applying classification skills in clinical screening tasks. A major aim is to develop models based on current advances in neural networks. Salaries will be on the 1A scale ( 11,399 --- 13495). Informal enquiries may be made to Dr. Jim Austin (0904 432734, email: austin@uk.ac.york.minster). Further particu- lars may be obtained from The Registrar's Department, University of York, Heslington, York, YO1 5DD, UK to whom three copies of a curriculum vitae should be sent. The clos- ing date for applications is 24 Aug 1990. Please quote reference number J2. August 6, 1990 ------------------------------ Date: Tue, 7 Aug 90 09:47:36 PDT From: shapiro@lillith.ee.washington.edu (Linda Shapiro) Subject: new book One more entry in the vision books category. A new vision book by Robert Haralick and Linda Shapiro is being completed this summer. It will be published by Addison-Wesley. The following is the table of contents. COMPUTER AND ROBOT VISION Table of Contents 1. Computer Vision Overview 2. Binary Machine Vision: Thresholding and Segmentation 3. Binary Machine Vision: Region Analysis 4. Statistical Pattern Recognition 5. Mathematical Morphology 6. Neighborhood Operators 7. Conditioning and Labeling 8. The Facet Model 9. Texture 10. Image Segmentation 11. Arc Extraction and Segmentation 12. Illumination Models 13. Perspective Projection Geometry 14. Analytic Photogrammetry 15. Motion and Surface Structure from Time Varying Image Sequences 16. Image Matching 17. The Consistent Labeling Problem 18. Object Models and Matching 19. Knowledge--Based Vision 20. Accuracy 21. Glossary of Computer Vision Terms ------------------------------ Date: Tue, 7 Aug 1990 10:43:32 PDT From: Gerard Medioni Subject: CVPR-91 CALL FOR PAPERS CALL FOR PAPERS IEEE COMPUTER SOCIETY CONFERENCE ON COMPUTER VISION AND PATTERN RECOGNITION Maui Marriott on Kaanapali Beach Lahaina, Maui, HI 96761 June 3-6, 1991 GENERAL CHAIR: Shahriar Negahdaripour, Department of Electrical Engineering Department, University of Hawaii, Honolulu, HI 96822, E-mail: shahriar@wiliki.eng.hawaii.edu PROGRAM CO-CHAIRS: Berthold K.P. Horn, MIT Artificial Intelligence Lab, 545 Technology Square, Cambridge, MA 02139, E-mail: bkph@ai.mit.edu Gerard Medioni, Institute for Robotics and Intelligent, 232 Powell Hall, University of Southern California, Los Angeles, CA 90089, E-mail: medioni@iris.usc.edu LOCAL ARRANGEMENTS CHAIR: Tep Dobry, Department of Electrical Engineering, University of Hawaii Manoa, Honolulu, HI 96822, E-mail tep@wiliki.eng.hawaii.edu PROGRAM COMMITTEE N. Ahuja A. Blake K. Ikeuchi J. Malik R. Szeliski N. Ayache A. Bovik K. Kanatani J. Mundy D. Terzopoulos D. Ballard E. Delp C. Koch R. Nevatia W. Thompson H. Baker K. Ganapathy C. Liedtke H. Samet A. Yuille B. Bhanu D. Huttenlocher J. Little B. Schunck S. Zucker THE PROGRAM The program consists of high quality contributed papers on all aspects of computer vision and pattern recognition. Papers will be refereed by the members of the program committee. Accepted papers will be presented as long papers in a single track, short papers in two parallel tracks, and poster papers. PAPER SUBMISSION Four copies of complete papers should be sent to Gerard Medioni at the address given above by November 12, 1990. The paper should include two title pages, but only one containing the names and addresses of the authors, to permit an anonymous review process. Both title pages should contain the title and a short (up to 200 words) abstract. Authors MUST restrict the length of the papers to 30 pages, which includes everything, meaning the two title pages, text (double-spaced), figures, tables, bibliography, etc. Authors will be notified of acceptance by February 15, 1991. Final camera-ready papers, typed on special forms, will be due no later than March 15, 1991. FOR FURTHER INFORMATION Please write to: CVPR-91, The Computer Society of IEEE, 1730 Massachusetts Ave, N.W., Washington, DC 20036-1903. ------------------------------ Date: 9 Aug 90 16:17:29 GMT From: colin@nrcaer.UUCP (Colin Archibald) Subject: Vision Conference Keywords: Call for Papers Organization: NRCC-Aeroacoustics, Ottawa, Ontario V i s i o n I n t e r f a c e ' 9 1 Calgary, Alberta, Canada 3-7 June 1991 CALL FOR PAPERS Vision Interface '91 is the fifth Canadian Conference devoted to computer vision, image processing, and pattern recognition. This is an annual conference held in various Canadian cities and is sponsored by the Canadian Image Processing and Pattern Recognition Society. The 1991 conference will be held in Calgary, Alberta, June 3-7 1991 in conjunction with Graphics Interface '91. IMPORTANT DATES: Four copies of a Full Paper due: 31 Oct. 1990 Tutorial Proposals due: 15 Nov. 1990 Authors Notified: 1 Feb. 1991 Cover Submissions due: 1 Feb. 1991 Final Paper due: 29 Mar. 1991 TOPICS: Contributions are solicited describing unpublished research results and applications experience in vision, including but not restricted to the following areas: Image Understanding and Recognition Modeling of Human Perception Speech Understanding and Recognition Specialized Architecture Computer Vision VLSI Applications Image Processing Realtime Techniques Robotic Perception Industrial Applications Pattern Analysis & Classification Biomedical Applications Remote Sensing Intelligent Autonomous Systems Multi-sensor Data Fusion Active Perception Four copies of full papers should be submitted to the Program Co-chairmen before Oct.31 1990. Include with the paper full names, addresses, phone numbers, fax numbers and electronic mail addresses of all the authors. One author should be designated "contact author"; all subsequent correspondence regarding the paper will be directed to the contact author. The other addresses are required for follow-up conference mailings, including the preliminary program. FOR GENERAL INFORMATION: SUBMIT PAPERS TO: Wayne A. Davis Colin Archibald and Emil Petriu General Chairman VI '91 Program Co-chairmen Department of Computing Science Laboratory for Intelligent Systems University of Alberta National Research Council Edmonton, Alberta, Canada Ottawa, Ontario, Canada T6G 2H1 K1A 0R6 Tel: 403-492-3976 Tel: 613-993-6580 ------------------------------ Date: Tue, 7 Aug 90 14:17:40 BST From: Alan McIvor Subject: Summary of Computer Controllable Lenses Hi, I recently placed the following request: > Subject: Computer Controllable Lenses > > Hi, > We are currently looking for a lens for our vision system with > computer controllable focus, focal length, and aperture. Do any of you > know of a source of such lenses? We have found many motorized lenses > but most have auto-apertures and no feedback of settings. > I recall several years ago that a company called Vicon made such > a lens but I don't have any details. Anybody know how to get hold of > them? > > Thanks, > > Dr Alan M. McIvor > BP International Ltd ukc!bprcsitu!alanm > Research Centre Sunbury alanm%bprcsitu.uucp@uk.ac.ukc > Chertsey Road bprcsitu!alanm@relay.EU.NET > Sunbury-on-Thames uunet!ukc!bprcsitu!alanm > Middlesex TW16 7LN Tel: +44 932 764252 > U.K. Fax: +44 932 762999 > What follows is a summary of the responses that I received. Many companies make motorized lenses but few make them with feedback facilities for accurate control of the position. The feedback is almost invariably provided by potentiometers. Several compaines make lenses with potentiometer feedback of the zoom and focus setting but not the aperture. This is either auto-iris or open-loop. Examples are: - Cosmicar (Chori America, Inc.) F. Maliwat Electronics Division 350 fifth Ave., Suite 3323 New York, N.Y. 10118 (800) 445-4233 (212) 563-3264 Vista Vision Systems Levanroy House Deanes Close Steventon Oxfordshire OX136SR UK tel: +44 235 834466 fax: +44 235 832540 Ernitec Mechatronic Lenses [Henrik I. Christensen and Kourosh Pahlavan are using these. ] Ernitec A/S Fjeldhammervej 17 DK 2610 Rodovre Denmark Tel +45 31 70 35 11 Fax +45 31 70 11 55 * Ernitec UK 39/41 Rowlands Road Worthing West Sussex BN11 3JJ tel: 0903 30482 fax: 0903 213333 * Molynx Ltd Albany Street Newport Gwent NP9 5XW UK Tel: +44 633 821000 Fax: +44 633 850893 * Vicon Industries, Inc. 525 Broad Hollow Rd. Melville, NY 11747 USA Phone: 800-645-9116 [ Chuck Steward claims that the rotational accuracy is only 1 degree ] * Video-Tronic Lahnstrasse 1 2350 Neumunster 6 Germany Phone 0 43 21 8 79 0 Fax 0 43 21 8 79 97 Telex 2 99 516 vido d The only lens that I could find that had potentiometer feedback of all three axes is: * TecSec TLZMNDP12575 Vista Vision Systems Levanroy House Deanes Close Steventon Oxfordshire OX136SR UK tel: +44 235 834466 fax: +44 235 832540 Other approaches to the construction of a computer controllable lens that were suggested are: * take a normal zoom lens, mount a collar around the focus sleeve, the aperture sleeve and the zoom barrel separately, and then turn each collar with a high precision stepper motor. Chuck Steward is currrently doing this. [ This has the benefit of allowing you to use 35mm camera lenses which have better optical performance than CCTV lenses] * from Don Gennery We also recently talked to Mechanical Technology Inc. of Latham, N. Y., about the possibility of them making some computer-controlled lenses for us. * from Lynn Abbott I assembled a camera system with 2 motorized lenses about 3 years ago at the Univ. of Illinois, with N. Ahuja. At the time, several companies sold motorized lenses, but we could not locate any company which produced a controller for these lenses which would interface with a host processor. We located a small company which specialized in dc servo controllers. This company, TS Products, was willing to customize a pair of motorized Vicon lenses so that one of their controllers would drive the lens actuators. This controller accepts commands from a host over an RS-232 line or via the IEEE-488 bus. They were willing to work with us in specifying the system, and we were happy with the results. They were at TS Products, Inc. 12455 Branford St. Bldg-22 Arleta, CA 91331 USA Phone: 818-896-6676 * Use a auto-everything 35mm lens and a lens adaptor. I have heard that at the Harvard Robotics Lab they use Canon EOS lenses which include all the motors, etc, and talk to the camera body via a 4pin serial connection, the protocol for which they have decoded. * from Shelly Glaser 011 972 3 545 0060 vandalizing an amateur video cam-corder * use a Sony B-mount teleconferencing lens via a mount adaptor. These have a serial interface for remote control. Very good optics - broadcast quality, but quite heavy units. Canon UK Ltd., Canon House, Manor Road, Wallington, Surrey SM6 OAJ, UK (081) 773-3173 Fujinon Inc., 3N, 125 Springvale, West Chicago, IL 60185 (312) 231-7888 * from Reg Willson A second alternative is to have a motorized lens custom made. Computer Optics is a small company that will build a motorized lens to your specs, but we found them to be far too expensive. They quoted us $US 30,000 for the lens we specified - at which point we decided to build our own. Computer Optics Inc., G. Kane 120 Derry Road, P.O. Box 7 Hudson, New Hampshire 03051 (603) 889-2116 Vista Vision Systems Levanroy House Deanes Close Steventon Oxfordshire OX136SR UK tel: +44 235 834466 fax: +44 235 832540 Given a controllable lens with DC servo motors and potentiometer feedback, there is also the question of how to control it. Unfortunately most available servo motor controllers assume feedback via resolvers or optical encoders, so are unapplicable. Possible solutions are: 1) Replace the motors on the lens with servo motors with optical encoders or stepper motors, and use an available controller - from Reg Willson The current lens we have is a Cosmicar C31211 (C6Z1218M3-2) TV grade zoom lens (apx $US 560). We replaced the DC servo motors and drive train with AX series digital micro stepping motors from Compumotor. The stepping motors have a simple RS232 interface and have far more accuracy and precision than the DC servo motors they replaced. Unfortunately they're rather expensive ($US 1700 / degree of freedom). We also had to have a machinist build an assembly for the lens and motors. Compumotor Division, Parker Hannifin Corporation 5500 Business Park Drive Rohnert Park, CA 94928 (800) 358-9070 (707) 584-7558 - Galil motor controllers for DC Servo motors Galil Motion Control, Inc. 1054 Elwell Court Palo Alto, CA 94303 tel: (415) 964-6494 fax: (415) 964-0426 Naples Controls Ltd White Oriels Chaddleworth Berkshire RG16 0EH UK tel: 04882 488 fax: 04882 8802 - Digiplan motor controllers for Stepper motors - Themis 4-axis motor controller for servos - MDS-330 Servo Interface Card AMC Ltd Unit 2, Deseronto Industrial Estate St Mary's Road, Langley, Berks SL3 7EW tel: (0753) 580660 Fax: (0753)580653 - PeP VMIC intelligent motion controller AMC Ltd Unit 2, Deseronto Industrial Estate St Mary's Road, Langley, Berks SL3 7EW tel: (0753) 580660 Fax: (0753)580653 2) Use a dedicated PID controller for the control loop and a Digital to Analog convertor in the computer to provide the setpoint (i.e., desired zoom, focus, aperture) - one per axes. Example PID controllers are: RS Servo Control Module Stock Number 591-663 RS Components, UK. PVP 142 Linear Servo Amplifier Naples Controls Ltd White Oriels Chaddleworth Berkshire RG16 0EH UK tel: 04882 488 fax: 04882 8802 Example DACs are: PeP VDAD AMC Ltd Unit 2, Deseronto Industrial Estate St Mary's Road, Langley, Berks SL3 7EW tel: (0753) 580660 Fax: (0753)580653 MDS-330 Servo Interface Card UKP 1195 AMC Ltd Unit 2, Deseronto Industrial Estate St Mary's Road, Langley, Berks SL3 7EW tel: (0753) 580660 Fax: (0753)580653 MDS-620 Analogue Output card AMC Ltd Unit 2, Deseronto Industrial Estate St Mary's Road, Langley, Berks SL3 7EW tel: (0753) 580660 Fax: (0753)580653 BVME240 Analogue Output Module BVM Limited Flanders Road Hedge End, Southampton SO3 3LG tel 0703 270770 fax 0489 783589 ACROMAG AVME9210/15 Universal Engineering and Computing Systems 5/11 Tower St Newtown Birmingham B19 3UY tel: 021-359 1749 fax: 021-333 3137 Motorola MVME605 Thame Microsystems Thame Park Road, Thame Oxford OX9 3UQ Tel: 0844 261456 Fax: 0844 261682 Burr-Brown MVP904 Thame Microsystems Thame Park Road, Thame Oxford OX9 3UQ Tel: 0844 261456 Fax: 0844 261682 3) Use an ADC to read the feedback potentiometer and a DAC to provide the motor drive voltage (via a power amp): Example ADCs are: PeP VADI AMC Ltd Unit 2, Deseronto Industrial Estate St Mary's Road, Langley, Berks SL3 7EW tel: (0753) 580660 Fax: (0753)580653 MDS-310 AMC Ltd Unit 2, Deseronto Industrial Estate St Mary's Road, Langley, Berks SL3 7EW tel: (0753) 580660 Fax: (0753)580653 BVME250 Analogue Input Module BVM Limited Flanders Road Hedge End, Southampton SO3 3LG tel 0703 270770 fax 0489 783589 ACROMAG AVME9320 Universal Engineering and Computing Systems 5/11 Tower St Newtown Birmingham B19 3UY tel: 021-359 1749 fax: 021-333 3137 Burr-Brown MVP901 Thame Microsystems Thame Park Road, Thame Oxford OX9 3UQ Tel: 0844 261456 Fax: 0844 261682 Example combined systems are (with onboard CPUs): Burr Brown MPV940 controller + ACX945 Analog I/O module Thame Microsystems Thame Park Road, Thame Oxford OX9 3UQ Tel: 0844 261456 Fax: 0844 261682 Scan Beam A/S SB100 Scan Beam A/S Rosendalsvej 17 DK-9560 Hadsard Tel: +45 98 57 15 99 Fax: +45 98 57 48 87 [this has the advantage of onboard power amps. It is being used by Henrik I. Christensen who warns that the company is unstable.] BVME347 + IP-DAC + IP-ADC BVM Limited Flanders Road Hedge End, Southampton SO3 3LG tel 0703 270770 fax 0489 783589 Dr Alan M. McIvor BP International Ltd ukc!bprcsitu!alanm Research Centre Sunbury alanm%bprcsitu.uucp@uk.ac.ukc Chertsey Road bprcsitu!alanm@relay.eu.net Sunbury-on-Thames uunet!ukc!bprcsitu!alanm Middlesex TW16 7LN Tel: +44 932 764252 U.K. Fax: +44 932 762999 ------------------------------ End of VISION-LIST ********************