1. A handwriting verification method executed in a computer system, the method comprising: obtaining a test sample and a reference sample each containing a plurality of feature points, wherein each of the feature points includes: (i) geometric features including an x-coordinate value and a y-coordinate value, and (ii) a non-geometric feature; finding mappings between feature points of the test sample and feature points of the reference sample based on the geometric features of the test sample and reference sample, wherein the finding mappings comprises finding mappings between one or more of evenly distributed feature points in the test sample and one or more evenly distributed feature points in the reference sample; and after the finding mappings, comparing the non-geometric features of each of the mapped feature points of the test sample and the reference sample.