The following shape indices were then calculated: circularity OP/OW, rectangularity OA/[OL × OW], ellipticity OL-OW/OL + OW, form factor [4π × OA/OP], and SA/OA.
Posteriormente, se calcularon los siguientes índices de forma: circularidad PO/AO, rectan-gularidad SO/[LO × AO], elipticidad LO-AO/LO+ AO, factor de forma [4π × SO/PO] y SS/SO.