The Measure 3D function in the 3D ROI manager outputs a number of parameters. One parameter that is outputted is SurfCorr(pix).

Can someone explain the significance of this parameter or how it is calculated. I am thinking the CompCorr(pix) and SpherCorr(pix) are calculated using this value for surface area, but want to be sure.

my voxel dimensions are 0.1415 x 0.1415 x 0.9994µm

Also if someone can give an intuitive explanation for the difference between sphericity and compactness (other than one is the cube root of the other) that would be really helpful.

Cheers!

Ian