Title :
Preprocessing and recognition of characters in container codes
Author :
Igual, Ismael Salvador ; Garcia, Gabriela Andreu ; Jiménez, Alberto Pérez
Author_Institution :
Departamento de Informatica de Sistemas y Computadores, Univ. Politecnica de Valencia, Spain
Abstract :
Describes the recognition of container code characters. The system has to deal with outdoor images which usually have damaged characters and obtain an answer in real time. A top-hat transformation, equalization and adaptive cropping have been applied to reduce the noise and correct the inclusion box. The training corpus is artificially grown by applying controlled deformations of the samples which increase the recognition rate. Approximated nearest neighbours are used in order to perform a fast search with a large corpus.
Keywords :
character recognition; feature extraction; image segmentation; mathematical morphology; noise; adaptive cropping; approximated nearest neighbours; characters recognition; container codes; controlled deformations; damaged characters; equalization; inclusion box correction; noise reduction; outdoor images; preprocessing; recognition rate; top-hat transformation; training corpus; Adaptive equalizers; Automatic control; Character recognition; Containers; Feature extraction; Filters; Image segmentation; Morphological operations; Pattern recognition; Surface morphology;
Conference_Titel :
Pattern Recognition, 2002. Proceedings. 16th International Conference on
Print_ISBN :
0-7695-1695-X
DOI :
10.1109/ICPR.2002.1047815
