Feret Diameters

Feret diameters are the distances between parallel tangents touching opposite sides of the object. The number of Feret diameters from 0 to 180 degrees is defined by an angle (1-90 degrees). Feret Min is the shortest Feret diameter and Feret Max is the longest Feret diameter.

 Note: To compute ferret diameters: In the Project menu, click on Preferences. In the Project Preferences window, select Object Extraction, click on the button Compute Additional Parameters and select Feret Diameters.

 Note: This process can be stopped by clicking on its progress bar, after closing the dialog. 

Select a step from 1 to 90 and press the Compute button (all the previous computed Feret diameters are deleted).

Example:

• step = 2 => Feret diameters at 0, 2, 4, 6, ..., 174 ,176 and 178 degrees
• step = 10 => Feret diameters at 0, 10, 20, 30, ..., 150 ,160 and 170 degrees
• step = 90 => Feret diameters at 0 and 90 degrees

 Note: To display the Feret diameters in the Data Viewer or in the Object Extraction tool (Objects tab): In the Project Preferences window, select Object Extraction and check Feret Diameters (Additional). The Feret diameters are not saved in the JMicroVision Project file.

The Clear All button deletes all the Feret diameters of all the objects.