You can set the minimum and maximum object size for detection by specifying numerical values or reference areas on screen.  Objects of all sizes beyond the set values  will not trigger detection.

To specify the size, do as follows:

1. Select the Object Tracker object.
2. In the Maximum height and Maximum width fields (1), enter the maximum height and width of a detectable object as a percent of the FoV height. The values should be in the range [0,05; 100].
   
3. In the Minimum height and Minimum width fields (2), enter the minimum height and width of a detectable object as a percent of the FoV height. The values should be in the range [0,05; 100].
4.  Click the Apply button.

To set the reference area on screen, do as follows:

1. Select the Object Tracker object.

2. Click the Min  button and  set the minimum size of  a detectable object. You can do so by dragging and dropping  the nodes of the reference area. 

   

   For your convenience, you can click the  button and configure the mask on a still frame / snapshot. To undo, click this button again.

3. Click the Max  button and  set the maximum size of a detectable object.
   

   By default, the maximum size is the whole size of FoV, so the nodes are located in the corners.

4. Click the Apply button.

You have successfully set the minimum and maximum object size for detection.