Normalization Techniques for Hand printed Numerals Family of pattern standardization techniques based on geometrical projection is applied to a file of digitized hand printed numerals obtained from sales clerks. The principle involves transforming a quadrilateral specified in terms of the convex hull of each pattern into a square. The amount of overlap within each class of characters versus the amount between classes is used to evaluate the degree of normalization achieved with respect to other published methods including size and shear normalization through moments. CACM August, 1970 Nagy, G. Tuong, N. pattern recognition, character recognition, normalization, projective transformation, central projection, hand printed characters, handwriting, linear transformation, size normalization, mapping, pattern preprocessor 3.63 5.14 CA700802 JB February 10, 1978 4:03 PM 2019 5 2019 2019 5 2019 2019 5 2019