Before revision:  Results: We provided a correct set-up of the microscope and, using the approach of information entropy in image processing, we sought a voxel (3D pixel)  which localizes the information about the object.
After revision:  Results: We provided a correct set-up of the microscope and, using the approach of information entropy in image processing, we sought a voxel (3D pixel) called an electromagnetic centroid which localizes the information about the object.