facekit.net developer blog http://blog.facekit.net Recent update on facekit.net - the internet live face recognition engine Thu, 30 Oct 2008 13:26:53 +0000 http://wordpress.org/?v=2.6.3 EN Now with direction parameter http://blog.facekit.net/en/2007/07/26/now-with-direction-paramter/ http://blog.facekit.net/en/2007/07/26/now-with-direction-paramter/#comments Fri, 27 Jul 2007 01:45:14 +0000 admin http://blog.facekit.net/en/2007/07/26/now-with-direction-paramter/ Facekit.net now supports parametric estimation of face direction as it’s default feature. Following is the new JSON output format:

  1.  
  2. {
  3.   state: "detected",  // Detection result "detected" or "none"
  4.   label: "front",  // Recognition result
  5.   x:40, y:50,  // Detected position
  6.   xdir: 10,     // Direction parameter (-90 to 90)
  7.   width:20, height:20,  // Size of the detected face
  8.   time:100.0  // Timestamp (only when the input type is flv)
  9. }

Use of javascript is completely compatible with the previous examples:

  1.  
  2. function getResult(value) {
  3.     var data = eval("("+value+")");
  4.     if (data.xdir < -20) {
  5.         do_something…
  6.     } else if (data.xdir > 20) {
  7.         do_something_else…
  8.     }
  9. }

For any feedback, please let me know by writing a comment on this blog.

]]> http://blog.facekit.net/en/2007/07/26/now-with-direction-paramter/feed/ Note on privacy http://blog.facekit.net/en/2007/04/23/note-on-privacy-concern-on-using-facekitnet/ http://blog.facekit.net/en/2007/04/23/note-on-privacy-concern-on-using-facekitnet/#comments Mon, 23 Apr 2007 08:48:07 +0000 admin http://blog.facekit.net/?p=11&language=en Some people may aware of privacy, because you have to turn on your camera and facekit.net will capture your face and do some processing. Here we try to explain the possible privacy threats occurred by using facekit.net.

How facekit.net works

Facekit.net consists of a web interface used to customize your face recognizer and some flash programs to run your live recognizer.
The live face recognizer runs on your browser completely locally, and it does not send any information to our server (only the exception is, if you press the feedback button, it will send information containing your IP address, url, and some text variables to our server). The recognizer directly sends a recognition result by calling a javascript function defined at the user’s web page, so those information are also handled locally on your browser (but on this part there is a possible threat *see next section*).

Possible privacy threat

On using flash executable (when you browse a web page which embeds facekit.net)

As explained in the previous section, the flash executable runs completely locally on your browser, and the face information of the user will not sent to our server. But by writing a specific javascript code, it is possible for the web developer to collect face information of the user. Note that we do not provide any interface to let web developer to access actual face image, but the recognition result will be sent to the javascript function and it can be logged.

On using web interface (when you customize your own face recognizer)

On customizing your own face recognizer, you have to upload images you have prepared to our server. We do our best to protect your images, but there is still a possible threat on network attacks. We ask you to keep this risk in mind when you upload your picture to our server. When you turn your project to public, please be sure that your project does not contain any private information.

]]> http://blog.facekit.net/en/2007/04/23/note-on-privacy-concern-on-using-facekitnet/feed/ How to embed face recognition feature to your web page http://blog.facekit.net/en/2007/04/12/how-to-embed-face-recognition-feature-to-your-web-page/ http://blog.facekit.net/en/2007/04/12/how-to-embed-face-recognition-feature-to-your-web-page/#comments Fri, 13 Apr 2007 07:12:03 +0000 admin http://blog.facekit.net/?p=9&language=en Here we explains how to embed face recognition feature to your web page. Face recognition program generated by facekit.net runs on Flash execution environment on your web browser. You can embed face recognition program to your own web page by following simple procedures. 1. Import Javascript file Import Javascript file “swfobject.js”, by inserting following code on the head part of your HTML.

  1. <script src="http://facekit.net/javascripts/swfobject.js" type="text/javascript"></script>

2. Decide where to place face recognition program Insert following code to the place where you want to put the face recognition program.

  1. <div id="flashcontent">This page requires flash9.
  2.  Please install or upgrade flash player if you see this message.
  3.  <a href="http://www.adobe.com/go/getflashplayer"><img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif" alt="" /></a></div>

3. Insert Javascript code By inserting following Javascript code, the face recognizer will show up on the place you have defined in step 2.

  1.  
  2. var so = new SWFObject("http://facekit.net/flash/facekit_1", "facekit_1", "320", "263", "9", "#869ca7");
  3. so.addVariable("url", location.href);
  4. so.write("flashcontent");

(4). Use face recognition result to control your web page To use face recognition result, modify the Javascript code written in step 3 as follows.

  1.  
  2. var so = new SWFObject("http://facekit.net/flash/facekit_1", "facekit_1", "320", "263", "9", "#869ca7");
  3. so.addVariable("url", location.href);
  4. so.addVariable("callback", "getResult");
  5. so.addParam("allowScriptAccess", "always");
  6. so.write("flashcontent");

By this modification, the face recognition program will call the function “getResult” for each time of the recognition loops. Recognition result is given as following JSON format on calling the function “getResult”.

  1.  
  2. {
  3.   state: "detected",  // Detection result "detected" or "none"
  4.   label: "front",  // Recognition result
  5.   x:40, y:50,  // Detected position
  6.   width:20, height:20,  // Size of the detected face
  7.   time:100.0  // Timestamp (only when the input type is flv)
  8. }

By creating a function like below, you can now create a dynamic web page which changes it’s behavior depending on the recognition results.

  1.  
  2. function getResult(value) {
  3.     var data = eval("("+value+")");
  4.     if (data.label == "left") {
  5.         do_something…
  6.     } else if (data.label == "right") {
  7.         do_something_else…
  8.     }
  9. }

You can see a concrete example of above features from this page.

]]> http://blog.facekit.net/en/2007/04/12/how-to-embed-face-recognition-feature-to-your-web-page/feed/ First review! http://blog.facekit.net/en/2007/03/28/first-review/ http://blog.facekit.net/en/2007/03/28/first-review/#comments Thu, 29 Mar 2007 05:40:52 +0000 admin http://blog.facekit.net/?p=7&language=en We got a first review at Osamano-Hakoniwa blog. Thank you, masayashi-san! http://d.hatena.ne.jp/masayashi/20070321

]]> http://blog.facekit.net/en/2007/03/28/first-review/feed/ Hello world! http://blog.facekit.net/en/2007/02/11/hello-world-2/ http://blog.facekit.net/en/2007/02/11/hello-world-2/#comments Sun, 11 Feb 2007 10:44:48 +0000 admin http://blog.facekit.net/?p=4&language=en Welcome to facekit.net developer’s blog.

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