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PiViSA: A Privacy Enhancement System for Video Surveilled Spaces

This wiki provides information on a Privacy Enhancement System. Research on this is part of the ETH research project blue-c-II. It is one example application for the use of latest video technologies.

The following videos document the systems use (best viewed with VLC):

• System Prototype with Barcode (10MB)
• System Prototype with Barcode (68MB)
• System Prototype with Barcode Uncut (27MB)

The videos have been taken at the chair for CAAD where a permanent demo of the system is running. Persons walking through the observed area have the possibility to control if they will appear obscured by a block filter or clear on the streamed video.

The project was presented at the UKUUG Linux Summer Conference 2006 in Brighton, UK and at Privacy, Security and Trust 2006 in Markham/Toronto, Canada.

• PST
  • Privacy Enhancement Open Office Presentation (2.8MB)
  • Privacy Enhancement PDF Presentation (450kb)
• UKUUG
  • Virtual Curtains (1.7MB)

_

Number of topics: 9

See also the faster WebTopicList

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Related topics: TWikiUsers, TWikiRegistration^?

TWiki.Curtain Web Preferences

The following settings are web preferences of the TWiki.Curtain web. These preferences overwrite the site-level preferences in TWikiPreferences, and can be overwritten by user preferences (your personal topic, i.e. TWikiGuest in the TWiki.Main web)

Preferences:

* Some TWiki Preferences that should/might be overwritten here

• • Set WIKILOGOIMG =
  • Set WIKIWEBLIST =
• Copyright notice:
  • Set WEBCOPYRIGHT =
  • Set SKIN = eth

• List of topics of the TWiki.Curtain web:
  • Set WEBTOPICLIST = Changes | Index | Search | Go

• Web specific background color: (Pick a lighter one of the StandardColors)
  • Set WEBBGCOLOR = #D0D0D0

• List this web in the SiteMap:
  • If yes, set SITEMAPLIST to on, do not set NOSEARCHALL, and add the "what" and "use to..." description for the site map. Make sure to list only links that include the name of the web, e.g. Curtain.Topic links.
  • Set SITEMAPLIST =
  • Set SITEMAPWHAT =
  • Set SITEMAPUSETO = ...collaborate on a privacy enhancement system for video surveillance.

• Exclude web from a web="all" search: (Set to on for hidden webs)
  • Set NOSEARCHALL =

• Default template for new topics and form(s) for this web:
  • WebTopicEditTemplate^?: Default template for new topics in this web. (Site-level is used if topic does not exist)
  • TWiki.WebTopicEditTemplate: Site-level default template
  • TWikiForms: How to enable form(s)
  • Set WEBFORMS =

• Users or groups who are not / are allowed to view / change / rename topics in the Curtain web: (See TWikiAccessControl)
  • Set DENYWEBVIEW =
  • Set ALLOWWEBVIEW =
  • Set DENYWEBCHANGE =
  • Set ALLOWWEBCHANGE = TWikiAdminGroup CaadGroup
  • Set DENYWEBRENAME =
  • Set ALLOWWEBRENAME = TWikiAdminGroup CaadGroup

• Users or groups allowed to change or rename this WebPreferences topic: (I.e. TWikiAdminGroup)
  • Set ALLOWTOPICCHANGE = TWikiAdminGroup CaadGroup
  • Set ALLOWTOPICRENAME = TWikiAdminGroup CaadGroup

• Web preferences that are not allowed to be overridden by user preferences:
  • Set FINALPREFERENCES = WEBTOPICLIST, DENYWEBVIEW, ALLOWWEBVIEW, DENYWEBCHANGE, ALLOWWEBCHANGE, DENYWEBRENAME, ALLOWWEBRENAME

Notes:

• A preference is defined as:
  6 spaces * Set NAME = value
  Example:
  • Set WEBBGCOLOR = #FFFFC0
• Preferences are used as TWikiVariables by enclosing the name in percent signs. Example:
  • When you write variable %WEBBGCOLOR% , it gets expanded to #D0D0D0 .
• The sequential order of the preference settings is significant. Define preferences that use other preferences first, i.e. set WEBCOPYRIGHT before WIKIWEBMASTER since %WEBCOPYRIGHT% uses the %WIKIWEBMASTER% variable.
• You can introduce new preferences variables and use them in your topics and templates. There is no need to change the TWiki engine (Perl scripts).

Related Topics:

• TWikiPreferences has site-level preferences.
• TWikiUsers has a list of user topics. User topics can have optional user preferences.
• TWikiVariables has a list of common %VARIABLES%.
• TWikiAccessControl explains how to restrict access by users or groups.

http://wiki.arch.ethz.ch/twiki/bin/view/Curtain The Curtain web of TWiki. TWiki is a Web-Based Collaboration Platform for the Corporate World. en-us Copyright 2009, Peter Thoeny and contributing authors. Peter Thoeny [Peter@Thoeny.com] Peter Thoeny [Peter@Thoeny.com] TWiki TWiki.Curtain http://wiki.arch.ethz.ch/twiki/bin/view/Curtain http://wiki.arch.ethz.ch/twiki/pub/TWiki/TWikiLogos/twikilogo88x31.gif http://wiki.arch.ethz.ch/twiki/bin/view/Curtain/WebStatistics Statistics for Curtain Web Month: Topic views: Topic saves: File uploads: Most popular topic views: Top contributors for topic save and uploads: May 2009 40 0 0 21 ... 2009-05-05T14:31Z guest 1.80 updated major http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebStatistics http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebStatistics http://wiki.arch.ethz.ch/twiki/bin/view/Curtain/WebHome PiViSA: A Privacy Enhancement System for Video Surveilled Spaces This wiki provides information on a Privacy Enhancement System. Research on this is part of the ETH ... 2006-11-01T04:16Z TorstenSpindler 1.10 updated major http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebHome http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebHome http://wiki.arch.ethz.ch/twiki/bin/view/Curtain/WebPreferences TWiki.Curtain Web Preferences The following settings are web preferences of the TWiki.Curtain web. These preferences overwrite the site-level preferences in TWIKIWEB ... 2006-07-06T10:12Z TorstenSpindler 1.7 updated major http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebPreferences http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebPreferences http://wiki.arch.ethz.ch/twiki/bin/view/Curtain/WebRss TWiki's Curtain web SCRIPTURL /view SCRIPTSUFFIX /Curtain The Curtain web of TWiki. TWiki is a Web-Based Collaboration Platform for the Corporate World. INCLUDE{ ... 2003-01-30T08:15Z PeterThoeny 1.1 updated major http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebRss http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebRss http://wiki.arch.ethz.ch/twiki/bin/view/Curtain/WebNotify This is a subscription service to be automatically notified by e-mail when topics change in this Curtain web. This is a convenient service, so you do not have to come ... 2003-01-25T10:06Z PeterThoeny 1.2 updated major http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebNotify http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebNotify http://wiki.arch.ethz.ch/twiki/bin/view/Curtain/WebIndex SEARCH{"\. " scope "topic" regex "on" nosearch "on"} See also the faster WebTopicList 2001-11-24T11:41Z PeterThoeny 1.2 updated major http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebIndex http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebIndex http://wiki.arch.ethz.ch/twiki/bin/view/Curtain/WebTopicList TOPICLIST{" $name "} See also the verbose WebIndex. 2001-11-24T11:40Z PeterThoeny 1.1 updated major http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebTopicList http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebTopicList http://wiki.arch.ethz.ch/twiki/bin/view/Curtain/WebChanges INCLUDE{" TWIKIWEB .WebChanges"} 2001-08-16T19:58Z PeterThoeny 1.1 updated major http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebChanges http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebChanges http://wiki.arch.ethz.ch/twiki/bin/view/Curtain/WebSearch INCLUDE{" TWIKIWEB .WebSearch"} 2001-08-08T05:26Z PeterThoeny 1.1 updated major http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebSearch http://wiki.arch.ethz.ch/twiki/bin/rdiff/Curtain/WebSearch

• Topic index: List of Curtain topics in alphabetical order.
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Statistics for Curtain Web

Notes:

• Do not edit this topic, it is updated automatically. (You can also force an update)
• TWikiDocumentation tells you how to enable the automatic updates of the statistics.
• Suggestion: You could archive this topic once a year and delete the previous year's statistics from the table.

• WebChanges
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• WebRss
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• WebTopicList

See also the verbose WebIndex.

Number of topics: 9