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4. Start Up

openEyA-webcam supports 2 different Modalities for the automated capture and production system of chalkboard and/or digital lectures. These are:

  • - Screen grab (openEyA-lite): to capture automatically your computer screen (i.e., grab slides done with PPT, PDF or any other digital presentation) from the same computer in which openEyA is installed and synchronize them with video; You can give and project a seminar/lecture while recording it! Aternatvely, you can easily record self-seminars, i.e., your own lectures, views, etc. which you can then share with your students and audience via web or through a zip file.
  • - USB Webcam (high resolution, Linux compatible UVC Driver) to take pictures and zoom in over specific areas of a classroom podium, blackboard or a projected screen.

For either case, you need to select either Screen grab or Webcam when starting the small openEyA icon in your Desktop (see Fig.2). You can modify/select the modality after running openEyA from the option Slides in the GUI shown in Fig.4.


Fig.2: openEyA-webcam modalities for use.


4.1 Screen Grab: openEyA-lite  
4.2 Using USB Webcam  
4.3 Modalities Results  
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4.1 Screen Grab: openEyA-lite

Select Screen grab (openEyA-lite) from the option Slides in the openEyA GUI of Fig.4. This alternative to synchronize PPT/PDF slides or any other digital material being diplayed ion your computer screen with audio/video. openEyA-lite is useful to webcasting your own talks using any computer with Linux Ubuntu 10.10 and built in microphone and webcam (you can also use in this case an externa USB webcam).

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4.2 Using USB Webcam

Select Webcam from the option Slides in the openEyA GUI in Fig.4.

Plugin (connect) first the Webcam in the USB slots of your computer (and also the external Microphone if being used). openEyA-webcam will recognize the device(s) automatically and will appear as video0, video1, … in the GUI.

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4.3 Modalities Results

 
       Recall that after having installed openEyA you need to
                 RESTART YOUR COMPUTER (reboot) first!
  If you are also using an external (USB) Microphone and a USB Webcam,
   connect them first directly to the computer prior to the start up of
   openEyA (see section Requirements openEyA-webcam).

In either Modality Screen grab (openEyA-lite) or Webcam openEyA-webcam automatically capture slides (everuy few seconds from the screen and from an external HD webcam) and synchronize them to the audio-flash video.

Duplicated slides, or slides that have slighltly changed, are automatically discarded when processing. With openEyA synchronized recordings can also ’Create output Zip file’ with all files ready to upload it to the web.

It also possible to attach labels and information to recordings already processed (see section Recording Info: XML Output). The added information will appear in a XML file in the directory of the recording being labelled. This XML file can be used (link) directly within any Content Management System (CMS) for Ubiquitous Learning in order to describe the recording (e.g., Lecture Title and Speaker). These recordings’ info are also given in a text file and will appear in the main ’index.html’ document for the recording -ready for the web.

Another unique feature of openEyA-webcam is the possibility of editing any processed or re-processed recording in a subsequent time (see section Afterward Editing). This is particularly useful to cut parts of audio/videos, and its respective slides, that needs to be removed for any special reason.

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