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首页> 外文期刊>International Journal of Computer Science and Security >Recognition of Non-Compound Handwritten Devnagari Characters using a Combination of MLP and Minimum Edit Distance
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Recognition of Non-Compound Handwritten Devnagari Characters using a Combination of MLP and Minimum Edit Distance

机译:结合使用MLP和最小编辑距离来识别非复合手写天妇罗字符

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This paper deals with a new method for recognition of offline Handwritten Devnagari Character. It uses two well known and established pattern recognition techniques: one using neural networks and the other one using minimum edit distance. Each of these techniques is applied on different sets of characters for recognition. Here two sets of features are computed and two classifiers are applied to get higher recognition accuracy. Two MLP’s are used separately to recognize the characters. For one of the MLP’s the characters are represented with their shadow features and for the other chain code histogram feature is used. The decision of both MLP’s is combined using weighted majority scheme. Top three results produced by combined MLP’s is used to calculate the relative difference value. Based on this relative difference character set is divided into two. First set consists of the characters with distinct shapes and second set consists of confused characters, which appear very similar in shapes. Characters of distinct shapes of first set are classified using MLP. Confused characters in second set are classified using minimum edit distance method. Method of minimum edit distance makes use of corner detected in a character image using modified Harris corner detection technique. Experiment on this method is carried out on a database of 7154 samples. The overall recognition is found to be 90.74%.
机译:本文提出了一种识别离线手写天妇罗字符的新方法。它使用两种众所周知且已建立的模式识别技术:一种使用神经网络,另一种使用最小编辑距离。这些技术中的每一种都应用于不同的字符集以进行识别。在此计算两组特征,并应用两个分类器以获得更高的识别精度。两个MLP分别用于识别字符。对于其中一个MLP,字符以其阴影特征表示,对于其他链码直方图特征,则使用该字符。两个MLP的决定均采用加权多数方案合并。组合MLP产生的前三项结果用于计算相对差值。基于此相对差异,字符集分为两个。第一组由形状各异的字符组成,第二组由形状相似的混淆字符组成。使用MLP对第一组不同形状的字符进行分类。使用最小编辑距离方法对第二组中的混淆字符进行分类。最小编辑距离的方法利用通过改进的Harris角点检测技术在字符图像中检测到的角点。在7154个样本的数据库上进行了此方法的实验。整体识别率为90.74%。

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