Copyright (C) 1986-2011 by Daniel H. Hudgins, All Rights Reserved.
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This Web site is dedicated to the thousands of "users" of my programs, those who have helped test my programs over the last 25 or so years, and especially those who shared their experiences with me.
You must read this notice: This is a licensed Web site (HTML document and associated files). You must read and agree to be legally bound in contract by the Terms of Use and conditions given in the End User License Agreement ("EULA"), Legal Notices, Instructions, Warnings, Disclaimers, and all other text in "SECTION: 0" of "This Web Site" (HTML document and associated files) before reading or using any of the information, software programs, and or files, contained in, linked to, and or associated with, "This Web Site" (HTML document and associated files). Any use or "Beta Testing" of "This Web Site" constitutes your acknowledgment of your full agreement with the current End User License Agreement ("EULA") and your decision to have this current license supersede all prior and contemporaneous agreements and understandings. Information and files in "This Web Site" (HTML document and associated files) have been placed here so that long time users of "The Author's" programs DANCAD3D.COM (tm) , DANCAD87.EXE (tm), DANCINEL.EXE (tm), DANCINES.EXE (tm) , DANCAM.EXE (tm) , or DANPLOT.EXE (tm) could help proofread the text of the documentation files or screens displayed, and also help test data files, example files, and or any software programs that might be made available from time to time, to aid "The Author" in finding mistakes, bugs, and other errors, omissions, defects, mistakes, and faults. Everything in "This Web Site" (HTML document and associated files) is "Beta Test", "Beta Code", Experimental, Preliminary, requires proofreading, or is being evaluated for possible revision, and is NOT warranted to be free of defect. To help "The Author" report any bugs, foul-ups, defects, or mistakes that you find, see "SECTION: 8" for instructions. "This Web Site" (HTML document and associated files) and all other files and programs by Daniel H. Hudgins are made available "AS IS" without warranty of any kind express, expressed, or implied. All offers and specifications are subject to change or discontinuation without notice of any kind. Please look over "SECTION: 8" of "This Web Site" before contacting "The Author."
Before you click on an external link and leave this (my) Web site you might want to use the Bookmark command in your browser so that you can find your way back here. Remember that my site is called www.DANCAD3D.com (sm). When you go to other sites you need to abide by the rules of the author of that site. Just because I have offered a link to someone's site here does not mean that I endorse or recommend their products, or approve of how they are using or recommending my products and programs.
I am not responsible for the availability of, or content in, other peoples and companies Web, or ftp, sites and so do not claim, warranty, or guarantee that any or all of the sites indicated, or linked to, will be available when you want them, or that any of the links included in this Web site (HTML document) will work at all. If you find a bad, or inoperative, link try using a search engine to search for the company or product the link was to have been for, the company linked may have moved to a new URL or something. See SECTION: 8 for any possible information there might be about reporting a bug.
The links I have selected to include here are just some sites that I thought might be interesting to look at, or possibly useful to somebody with similar interests. You will have to look at them and make your own decisions about their relevance in your life and world view. Before purchasing anything it might be wise to ask what the seller's return policy is. If you have any problems with the sites linked to from my site I cannot be responsible, liable, and or otherwise involved in your grievance with them or your claim against them.
The inclusion of a link here does not imply that I am stating or suggesting that you may, could, or should use the information found at the sites linked to. The sites may contain proprietary, copyrighted, or patented ideas that you would need to negotiate with the owner of before using or incorporating their ideas into something you display, make, build, or sell.
Here are some external links to sites where you may be able to read some interesting information. Some of the information may be free to use, but some may require payment to the author or the company that runs the Web site, be sure that you read the instructions at the site when you visit. Inclusion of any link to a site here does not mean that I am endorsing their information or products, it just means that you might give their site a look over and make your own decision about their information or products. The trade marks mentioned on this page belong to the companies linked to, the author of that Web site, or the trade mark owner.
You can probably find many more links about these or similar concepts on the internet by using one of the many search engines. I have located some selected links on these subjects to let you know about some concepts that might lead to the start of an interesting project that you might perhaps employ CAD and CAM programs in the construction of.
When manufacturing Nipkow disks high precision is required for the centering and location of the holes. Having the holes drilled or punched to high tolerances is especially important when using the Nipkow disk for autostereoscopic displays since dislocation of the pixels may introduce errors in the stereoscopic depth perception. Using CAD and CAM software might help in producing satisfactory Nipkow scanning disks. Always check and thoroughly inspect all parts manufactured by using my programs before using them. You should not use my programs to produce components for anything that could produce damage or injury.
My interest in the Nipkow scanning disks primarily arises from my past and continuing interest in the design of autostereoscopic video displays that have many of the properties of Holographic video displays, see the information about my published papers below.
http://pyanczer.home.mindspring.com/Tour/yourdisk.html
Method of making your own Nipkow scanning disk as was described in 1928
http://www.sptv.demon.co.uk/nbtv/
Seems to have a sample WAV video file for Low Definition video to display with a Nipkow scanning disk.
http://www.ina.fr/voir_revoir/guerre/mondiales/40-08.fr.html
There may be a film clip of Paul Gottlieb Nipkow's funeral on this French site.
http://www.stereoscopic.org/proc/cd.html
http://www.spie.org/stereoscopic/proc/cd.html
These are links to "Selected SPIE papers on CD-ROM: Stereoscopic Displays and Applications" product code "Volume CDP12". This CD-ROM seems to include my paper 0367-09 on Disk 1 of 2. When I checked last this CD-ROM set was in stock.
My first published paper is in the www.SPIE.org (tm) proceedings volume 0367, "Processing and Display of Three-Dimensional Data, 1982" as paper SPIE 0367-09, "Transmission and storage bandwidth reduction for spatial image data associated with three- dimensional television systems with parallax", Daniel H. Hudgins, 1982", presented on August 26, 1982.
Included as part of the SPIE 0367-09 paper is a description of how a Nipkow disk scanner can be used to build an autostereoscopic video display that can exhibit both horizontal and vertical parallax, see figure 8. When such a system is arranged to produce exit pupils smaller than the size of the viewers eye's pupils some accommodation depth clue may also be obtained. Such an autostereoscopic display would look similar to a Hologram image and exhibit similar image characteristics, more so than some other autostereoscopic displays in some cases because of the small exit pupil size obtainable.
The display descriptions in my SPIE 0367-09 paper are based on some ideas I developed while working on some display experiments using a Nipkow disk scanner conducted around 1972. My approach apparently differs from earlier work done in the 1920's using dual spiral Nipkow disks in that my system can use only a single spiral disk while also allowing a multitude of viewpoints and not just two stereo views, so it might look more like a Hologram and not just a stereo viewer.
Additional detailed information about autostereoscopic display geometries I was working on around that time were presented in my second published paper SPIE 0747-04, proceedings volume 0747 "Practical Holography II, 1987", as paper 0747-04, "Estimating the performance of stereographic video displays, D.H. Hudgins", presented on January 13, 1987 which apparently is out of print, but may be available as a photocopy from the www.SPIE.org (tm) bookstore, or possibly available from a library somewhere.
The full titles of the two proceedings that have my autostereoscopic papers thus published are:
Proceedings of SPIE Vol. 0367, ISBN 0-89252-402-2
Processing and Display of Three-Dimensional Data
James J. Pearson, Lockheed Missiles and Space Co
174 pages, 22 papers, Pub. 1982, Softcover, Out of Print, $85
Proceedings of SPIE Vol. 0747, ISBN 0-89252-782-X
Practical Holography II
Tung H. Jeong, Lake Forest College
157 pages, 26 papers, Pub. 1987, Softcover, Out of Print, $85
When you search on the SPIE bookstore select volumes and then search for 0367 and 0747 making sure that you use the leading zero so that the right document comes up in the search results. Do not put the -09 or -04 after the volume number since the search may not find the volume with the paper number tagged on. The price shown may be out of date, and availability may have changed.
The P.O. Box address for me shown for me on paper 0367-09 is no longer to be used, so do not write to it.