15th International Conference on Pattern Recognition (ICPR'00) - Volume 2
Handwritten Digit Recognition by Hierarchical Displacement Extraction with Gradual Prototype Elimination
Barcelona, Spain
September 03-September 08
ISBN: 0-7695-0750-6
This paper investigates the performance of a handwritten character recognition method by hierarchical displacement extraction based on NIST special database (HSF7). The method is composed of a displacement extraction technique and a coarse-to-fine search strategy. In the displacement extraction technique, the displacement (correspondence) between an input pattern and a prototype is iteratively computed by minimizing a functional defined in the framework of regularization theory. In the coarse-to-fine search strategy, the above-mentioned displacement is determined with multi-resolution images to avoid the pitfalls of local minimum and make the number of iterations low. In addition, a new idea is proposed for reducing the cost of computation without degrading the recognition performance, in which the number of candidate proto-types is eliminated gradually through the hierarchical procedure of the coarse-to-fine search strategy.
Citation:
Yoshiki Mizukami, Taiji Sato, Kanya Tanaka, "Handwritten Digit Recognition by Hierarchical Displacement Extraction with Gradual Prototype Elimination," icpr, vol. 2, pp.2339, 15th International Conference on Pattern Recognition (ICPR'00) - Volume 2, 2000