The main difficulty of off-line handwritten signature verification is feature extraction.
离线手写签名鉴别的主要困难在于签名特征的提取。
The research on giving verification of the electronic signature in Chinese characters belongs to the research on the verification of the special off-line handwritten Chinese characters.
中文电子签名的认证方法研究可归属于特定人脱机手写汉字识别研究的范畴。
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