In integrated segmentation and recognition (ISR) of handwritten character strings, the underlying classifier is desired to be accurate in character classification and resistant to non-character patterns (also called garbage or outliers). This paper compares the performance of a number of statistical and neural classifiers in ISR. Each classifier has some variations depending on learning method: maximum likelihood estimation (MLE), discriminative learning (DL) under the minimum square error (MSE) or minimum classification error (MCE) criterion, or enhanced DL (EDL) with outlier samples. A heuristic pre-segmentation method is proposed to generate candidate cuts and character patterns. The methods were tested on the 5-digit Zip code images in CEDAR CDROM-1. The results show that training with outliers is crucial for neural classifiers in ISR. The best result was given by the learning quadratic discriminant function (LQDF) classifier.


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    Title :

    Integrated segmentation and recognition of handwritten numerals: comparison of classification algorithms


    Contributors:
    Cheng-Lin Liu, (author) / Sako, H. (author) / Fujisawa, H. (author)


    Publication date :

    2002-01-01


    Size :

    389974 byte




    Type of media :

    Conference paper


    Type of material :

    Electronic Resource


    Language :

    English



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