Vision-List-Request@ADS.COM (Vision-List moderator Phil Kahn) (03/23/91)
VISION-LIST Digest Fri Mar 22 13:05:16 PDT 91 Volume 10 : Issue 13 - Send submissions to Vision-List@ADS.COM - Send requests for list membership to Vision-List-Request@ADS.COM - Access Vision List Archives via anonymous ftp to ADS.COM Today's Topics: Need ground truth stereo disparity imagery Recognition of Moving Objects? Optimization in low-level image processing, Recurrent Nets. Features Extraction Thinning/skeletonizing Algorithms CAD databases in vision systems I need NITF Source Code Video WORM Summary ---------------------------------------------------------------------- Date: Tue, 19 Mar 91 22:14:15 GMT From: tolley@eola.cs.ucf.edu (Derek Tolley) Subject: Need ground truth stereo disparity imagery We are interested in finding disparity maps with ground truth for some stereo pairs. We are trying to compare the accuracy of some stereo algorithms, and would like to have a verified disparity map to compare with the results. If anyone has the sites where these pairs and their disparity maps can be found or other information, please email me. Thank you. Derek Tolley (tolley@eola.cs.ucf.edu) [ Such imagery would be a good addition to the Vision List archives. phil... ] ------------------------------ Date: Mon, 18 Mar 91 14:11:57 EST From: Nigel.Goddard@B.GP.CS.CMU.EDU Subject: Recognition of Moving Objects? Fellow visionaries, I am interested in finding out about any work on identifying moving objects, particularly non-rigid articulated objects such as humans walking, running, including recognition of the movement. I am aware of structure from motion work that recovers the structure of the object from the motion, but I know of no work that goes on to model and identify complex movements such as walking or running. I will provide a summary of responses if it is requested. Nigel Goddard goddard@b.gp.cs.cmu.edu ------------------------------ Date: Thu, 14 Mar 91 08:37:25 GMT From: eba@computing-maths.cardiff.ac.uk (Eduardo Bayro) Organization: Univ. of Wales Coll. of Cardiff, Dept. of Electronic & Systems Engineering Subject: Optimization in low-level image processing, Recurrent Nets. Hi friends ! Many optimization problems in low level image processing could be tackle with recurrent or recursive neural network implementations. Is anybody outthere who can send to me references and comments? Applications include filtering, enhancement, segmentation and feature extraction. The only paper I have got is: D. Suter " Neural Net Surface Interpolation " 1987 Int'l Conf. Systems, Man and Cybernetics, Alexandria, VA, pp. 118-123, Aug. 1988. I wil resume them and post them back. Thanking you in advance. Eduardo. ------------------------------ Date: Thu, 14 Mar 91 09:09:59 EST From: skuo@bach.rutgers.edu Subject: Features Extraction We currently start a project related to image recognition/understanding, Character Recognition is one of tasks. It will be highly appreciated if anyone can provide references or pointers to Feature Extraction algorithms. We will post the summary if any response is available. Thank you very much in advance. S. Kuo Email: skuo@caip.rutgers.edu ------------------------------ Date: Mon, 18 Mar 91 10:42:18 EST From: skuo@bach.rutgers.edu Subject: Thinning/skeletonizing Algorithms I am working on an image recognition project. Before recognizing the object, I would like to skeletonize the image of objects. Thus, it will be highly appreciated if anyone can give me some references and/or pointers about the skeletonizing/thinning algorithms. I will post a summary of all responses. Thank you very much in advance. S. kuo skuo@caip.rutgers.edu ------------------------------ Date: 19 Mar 91 05:29:16 GMT From: marcr@math.mscs.mu.edu (Marc R.) Organization: Marquette University - Milwaukee, Wisconsin Subject: CAD databases in vision systems I am looking for some good (or even bad) litature on the databases used in vision software used in CAD solid/wireframe modeling. I've gotten the headder from BRL-CAD's database, and would like to have more of said headders for this little project. So if you are: 1) A CAD vendor 2) A database vendor in the Cad world 3) into vision (machine that is) 4) read an article which might pretain 5) just plain informed Please send me e-mail, as the only group I read at the moment is comp.databases. Marc Rassbach marcr@marque.mu.edu If you take my advice, that ...marque!msoe3b2!milestn!marc is your problem, not mine! If it was said on UseNet, it must be true. Unix - It's a nice place to live, but you don't want to visit there. ------------------------------ Date: 13 Mar 91 19:53:52 GMT From: barboni@sbcs.sunysb.edu (Carol Barboni) Organization: State University of New York at Stony Brook Subject: I need NITF Source Code I am looking for source code for the National Image Transmission Format (NITF); in particular, I am interested in obtaining the complete source code for the functionality which translates _from_ the NITF standard format _into_ a form acceptable to UNIX platforms. My hardware suite is SUN-based. Thanks in advance. Carol R. Barboni, Grumman Data Systems, (516) 682-8355 barboni@gdstech.grumman.com ------------------------------ Date: Mon, 18 Mar 91 16:46:09 PST From: spock@windchime.arc.nasa.gov (Son of Sarak) Subject: Video WORM Summary Hello, After posting a request for information about video WORM drives, I received several responses, many of which were posted directly to the Vision-List. Apparently, there are two manufacturers of video WORM drives: Sony and Panasonic. Since the responses contained much greater depth of information about the Sony models, I have waited to post these results until I was able to include equivalent information about the Panasonic models. I. Sony CRV (Component Recording Video) System Introduction: - The basic record/playback system consists of 2 units. 1. LVS-5000 processor and controller unit 2. LVR-5000 recorder/player mechanical drive unit - The LVS-5000 can control up to 10 of the LVR-5000 units, allowing the discs to be recorded/played consecutively. - A stand-alone player-only unit, the LVA-7000, is also available. Physical Characteristics: Model Size Weight LVS-5000 375(W)x180(H)x450(D)mm 12.5 kg LVR-5000 375(W)x180(H)x530(D)mm 18 kg LVA-7000 424(W)x213(H)x530(D)mm 22 kg Video Formats (input): - NTSC composite, RGB, R-Y/Y/B-Y - The system can also be set to record only black and white RS-170 video with an increased bandwidth. - PAL is supported with an optional board. Resolution/Bandwidth (luminance): NTSC 4.5 MHz RS-170 6.7 MHz S/N ratio: 48 dB Media: 12" disc (double sided only?) Media Capacity: 24 minutes or 43,500 frames per side Seek Time: 0.5 seconds (full stroke average) Computer Control: RS-232C (LVR-5000) RS-232C, RS-422 (LVA-7000) Approximate Cost: all models US$8000 This is the approximate cost for government agencies, list price is probably 20-25% higher. II. Panasonic TQ-303xF Series Introduction: - The Panasonic models are all stand-alone units. The new TQ-303xF series models supersede the earlier TQ-2026F unit which was mentioned in several responses from the network. - The Panasonic models are TQ-3031F recorder/player TQ-3032F player only TQ-3038F monochrome recorder/player Physical Characteristics: size 430(W)x155(H)x546(D)mm weight 18 kg Video Formats (input): TQ-3031F NTSC composite, RGB, S-video(Y/C) TQ-3038F RS-170 Horizontal Resolution: TQ-3031F 380 TV-lines (Normal mode) 450 TV-lines (Hi-Res mode) TQ-3038F 600 TV-lines S/N ratio: 45 dB Media: 12" disc (single or double sided) Media Capacity: TQ-3031F 30 minutes (54,000 frames) per side (Normal mode) 20 minutes (36,000 frames) per side (Hi-Res mode) TQ-3038F 20 minutes (36,000 frames) per side Seek Time: 0.7 second (average) Computer Control: RS-232C standard equipment RS-422 available as option for TQ-3031F/TQ-3032F Approximate Cost: TQ-3031F/TQ-3038F US$20,000 TQ-3032F US$5,000 It should be noted that all of the models described have numerous features for playing/recording still frames and continuous video. Also, all models have provisions for storing some alphanumeric data directly on the discs for picture indices, etc. In addition to the WORM drives discussed above, Panasonic is introducing a Rewritable Optical Disc Recorder, the LQ-4000. The unit is slightly taller and heavier than the TQ-3031F, and accepts R-Y/Y/B-Y input in addition to the other formats accepted by the TQ-3031F. In other respects, the LQ-4000 specifications appear identical to those of the TQ-3031F, including the fact that it operates in both Normal and Hi-Res modes. Thanks to those who took the time and effort to respond to my request. Phillip Smith pnsmith@ames.arc.nasa.gov ------------------------------ End of VISION-LIST digest 10.13 ************************