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Watson is a real-time visual feedback recognition library for interactive interfaces that can recognize head gaze, head gestures, eye gaze and eye gestures using the images of a monocular or stereo camera. It can be easily installed on a Microsoft Windows system using the installation package. After installation follow the instructions below to configure Watson for your camera.

Users

Launching

You can start Watson from the toolkit Launcher (work in progress). By default, Watson for the toolkit is configured to work with a USB camera using the VFW (Video for Windows) driver. If using a different camera or dirver driver, you need to change the camera type parameter accordingly. See the developer section below for details.

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In order to use Watson with the rest of the Virtual Human toolkit, a few parameters need to be set in the ParamWatsonUser.cfg found in WATSON_DIRcore\Watson\Sequences\saso\ where WATSON_DIR is the directory where Watson is installedUSB.

Changing the camera type

By default, Watson for the toolkit Toolkit is configured to work with a USB camera using the VFW (Video for Windows) driver. If using a different camera or dirver driver, you need to change the camera type parameter accordingly.

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In order to use Watson with the toolkit using Stero camera, use the 'Watson-Stereo Camera' shortcut created during installation. The 'Start In' or ' Wroking Working Directory' for stereo camera is set to be WATSON_DIRcore\Watson\Sequences\SRI. However, the configuration file 'ParamWatsonUser.cfg' in this directory is not configured to work with the rest of the toolkit Toolkit by default. The section to set up Active MQ ActiveMQ messaging needs to be added to the ParamWatsonUser.cfg so Watson can send messages and work with the rest of the toolkitToolkit. See the 'Setting up ActiveMQ messaging' sections for activating ActiveMQ messaging for Stereo Camera set up.

Setting up ActiveMQ messaging

Note: If using the WATSON_DIRcore\Watson\Sequences\sasoUSB\ configuration for VH toolkit, this section should already be set up in the configuration file. If using other Watson configuration (such as WATSON_DIR core\Watson\Sequences\SRI for stereo camera, add this section to the ParamWatsonUser.cfg file

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Watson needs certain configuration files during start up. Hence the 'Working Directory' or 'Start in' directory needs to be set to the correct one before launching Watson. For the VH toolkit this directory is the WATSON_DIRcore\Watson\Sequences\saso\ directory where WATSON_DIR is the directory where Watson is installedUSB.

  • In order to use Watson with the toolkit, right click on any of the shortcuts based on your camera type created during installation on the desktop and open "Properties".
  • Change the "Start In" folder to use WATSON_DIRcore\Watson\Sequences\saso\ USB and click OK. By default, Watson for VH is configured to work with a USB camera using the VFW (Video for Windows) driver. If using a different camera or dirver driver, see the 'Changing the camera type' section to change the camera or driver type.

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