Presence/Absence Tool Parameters

 

 

 

 

The Presence/Absence Tool’s Count Gray Pixels capability displays a histogram of the gray values within its region of interest. This provides a visual aide when setting the tool’s low and high threshold values. The dual slider allows you to adjust both the upper and lower thresholds. The portion of the histogram that is within the threshold range is displayed in yellow; the portion that is below the low threshold is displayed in blue; the portion that is above the high threshold is displayed in red.

 

 

 

 

 

Presence/Absence Outputs

 

 

 

Presence/Absence Tool Advanced Parameters