Fig. 3.

Result illustration of the VEEV dataset. Superimposition of fiducial marker positions from the micrographs with $0^{°}$ and ${50}^{°}$ tilt angles (labeled by ‘dot’ and ‘inverted triangle’, respectively), and the affine transformed marker positions from the micrograph with ${50}^{°}$ tilt angle (labeled by ‘circle’). Divide-and-conquer algorithm is used to reduce the effect of lens distortion: the fiducial markers labeled by red ‘circle’ and green ‘circle’ are the ones matched correctly with the fixed fiducial markers from $0^{°}$; and the fiducial markers labeled by black ‘circle’ are regarded as outliers