Length of a fiber-like region.

To calculate the fiber length, a structure that is actually similar to a fiber is required. Here it is not the distance between a start and end point that is determined. The check can be done using the Form circle, among other things.

• Formula: ¼ × (Perimeter + (Sqrt (Perimeter² - 16 × Area))
• Unit: Unit of the scaling assigned to the image (e.g. μm)