Abstract

Methodologies : Solid earth sciences

New parameter of roundness R: Circularity corrected by aspect ratio

Takashimizu Y, Iiyoshi M
Keywords:
Aspect ratio, Circularity, ImageJ software, Krumbein’s visual roundness, Roundness

In this paper, we propose a new roundness parameter R, to denote circularity corrected by aspect ratio. The basic concept of this new roundness parameter is given by the following equation:

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SpringerOpen

Basic concept of transformation from a perfect circle. Narrow solid lines denote perfect circles before transformation. a) Only the perimeter increases; the area does not change. b) Only the area decreases; the perimeter does not change.

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