**Review of !TrackEye**

   First thing to do is download the source code, which is packed as a zip archive on code project website's article. Next I unziped it, and as the instruction for instalation on the website, I copied the two pictures, to the C:/ folder, that are going to be used by the algorithms. There are also suggested settings for a user to set before the starting of the eye-tracking, and they are: 
 
  **Settings to be Done to Perform a Good Tracking:**

  **Settings for Face & Eye Detection**
   Under !TrackEye Menu --> Tracker Settings

   Input Source: video

   Click on Select file and select ..\Avis\Sample.avi

   Face Detection Algorithm: Haar Face Detection Algorithm

   Check “Track also Eyes” checkBox

   Eye Detection Algorithm: Adaptive PCA

   Uncheck “Variance Check”

   Number of Database Images: 8

   Number of !EigenEyes: 5

   Maximum allowable distance from eyespace: 1200

   Face width/eye template width ratio: 0.3

   !ColorSpace type to use during PCA: CV_RGB2GRAY

   **Settings for Pupil Detection**

   Check “Track eyes in details” and then check “Detect also eye pupils”. 

   Click “Adjust Parameters” button:   Enter “120” as the “Threshold Value”

   Click “Save Settings” and then click “Close”

   **Settings for Snake**

   Check “Indicate eye boundary using active snakes”.

   Click “Settings for snake” button:

   Select !ColorSpace to use: CV_RGB2GRAY

   Select Simple thresholding and enter 100 as the “Threshold value”

   Click “Save Settings” and then click “Close”