===== Line tracking Tuning tab =====

This tab contains all of the most effective parameters for "tuning" the accuracy of the line tracking algorithm. To bring up this tab, you must be running the _line\_tracking_ program by selecting it in the **Program** menu, and then bringing up the Configure Dialog (click on the gear icon {{wiki:v2:image_291.png}} or select **File➜Configure**). Now select the **Tuning** tab under **Pixy Parameters** (it should be the first pane you see when you bring up the Configure Dialog.)


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  * **Edge threshold:** Adjusting this parameter determines how inclusive the line detection algorithm is. If the edge threshold is decreased, more potential lines will be detected.  If it's increased, less potential lines will be detected.  If Pixy2 isn't detecting the lines you want it to detect, this is likely the parameter that needs to be adjusted.
  * **Maximum line width:**  This adjusts the maximum width of the detected lines (in pixels.)  Lines that are wider will not be detected.
  * **Minimum line width:**  This adjusts the minimum width of the detected lines (in pixels.)  Lines that are narrower will not be detected.
  * **White line:**  Enabling this parameter will change Pixy2's line detection algorithm from dark lines on a light background to light lines on a dark background.

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