Processing

sample_contours(contours[, n_points])	Returns sampled contours using B-spline.
sample_contour(contour, n_sample_pts)	Returns sample points of contour using B-spline.
register_contours(contours)	Returns registered contours to their principal components.
register_contour(contour)	Returns registered contour to its principal component.
get_mean_registered_contour(registered_contours)	Compute mean of registered contours.
align_contours(contours, mean_contour)	Returns aligned contours to their mean.
align_contour(contour, mean_contour)	Aligns one contour to the mean of the set of contours.
get_mean_aligned_contour(aligned_contours_flat)	Compute mean of aligned contours.