Transformation is the main characteristic that distinguishes MDD from other approaches that use modeling.

转换是区别MDD与其他使用建模的方法的主要特征。

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Characteristic modeling is an important link in technology of speaker identification, a nice modeling method impact on the performance of speaker identification system.

建立声学模型是说话人识别技术的重要环节，一种好的建模方法对说话人识别系统的识别率具有极其重大的影响。

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Firstly, the local gray mean feature and local standard deviation feature were utilized to realize target modeling based on the low SNR characteristic of ir images.

首先，针对红外图像低信噪比的特点，采用局部灰度均值特征及局部标准差特征用于目标建模。

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