14. The non-transitory computer readable storage medium of claim 13 , wherein extracting the new contour from the rotated at least one additional contour is performed based on pixels forming an edge portion of the new image, the extracting being further performed by: transforming the new contour and the at least one additional contour into binary images; and resizing the new contour to match a size of the at least one additional contour.
14. The non-transitory computer readable storage medium of claim 13 , wherein extracting the new contour from the rotated at least one additional contour is performed based on pixels forming an edge portion of the new image, the extracting being further performed by: transforming the new contour and the at least one additional contour into binary images; and resizing the new contour to match a size of the at least one additional contour. 15. The non-transitory computer readable storage medium of claim 14 , further comprising: calculating a distance transform function of the transformed binary images of the new contour and the at least one additional contour.