According analyse the way of feature parameter extraction, we get the principle of feature parameter extraction, also study the theory of the model-training and model - matching.

分析了语音信号特征参数提取方法的优劣，并总结得出了参数提取的原则，并对模板训练匹配的问题进行了研究。

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This paper analyse the image enhancement, the binarization, the noise abatement, the thinning, the normalization and the feature extraction on the handwritten digit recognition.

本文首先对手写数字图像的图像灰度化、二值化、去噪、细化、归一化、特征提取等预处理过程进行分析；

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