The existing color feature extraction methods include color histogram, accumulative color histogram, color moments.
传统的颜色特征提取方法主要包括颜色直方图、累积直方图、颜色矩等。
Through analyzing the iris feature and combining with different feature extraction methods, we can realize iris recognition.
通过分析研究虹膜上丰富的纹理特征，结合不同的特征提取方法和分类器可以实现虹膜的身份认证。
Proposed feature extraction methods for structure, connected body, closed area and stroke in Chinese character's feature extraction.
在特征提取方面，给出了汉字结构点，连通体，封闭区域，笔划等特征的提取方法。
In this paper feature selection methods and feature extraction methods are colligated. Their advantage and disadvantage are evaluated.
本文综述了已有的特征选择和特征抽取方法，评价了它们的优缺点和适用范围。
Except reviewing the research and development of the facial expression feature extraction methods, we also have described them in theory.
论文从五个方面综述了近年来面部表情特征抽取的研究进展并力争从理论上对各种方法进行分析和比较。
Classical feature extraction methods include: Principle Component Analysis, Singular Value Decomposition, Projection Pursuit, Self-Organizing Map, and so on.
传统的特征提取方法主要有：主分量分析、奇异值分解、投影追踪、自组织映射等。
This paper includes studying many feature extraction methods such as time-frequency method, multi-resolution analysis and correlation analysis to analyze the Micro-Doppler signal.
本论文主要研究采用多种特征提取方法对激光微多普勒信号进行时-频分析、多尺度分析和相关变换技术。
This paper verified the effectiveness of the fault diagnosis method based on 2d-hmm for centrifugal pump, by applying several signal feature extraction methods combining 2d-hmm model.
在应用本文所采用的几种信号特征提取方法的基础上，结合2d -HMM模型，验证了基于2d - H MM的离心泵故障诊断方法的有效性。
Different from the existing kernel feature extraction methods, the kernel function used in the proposed one is not required to satisfy Mercers theorem so that they can be chosen from a wide range.
与现有的核特征抽取方法不同，该方法不需要核函数满足mercer定理，从而增加了核函数的选择范围。
In this paper, we review the present research status and some key techniques in this field, including the property of HRRP, preprocessing methods, feature extraction and classifier design.
该文详细讨论了基于HRRP的雷达自动目标识别的关键技术及研究现状，包括雷达hrrp的特性、预处理方法、特征提取方法及分类器设计方法等。
Feature selection and feature extraction are common methods for dimensionality reduction.
特征选择和特征抽取是维数约简常用的两种方法。
On the basis of analyzing and comparing existing methods, it presents a motion feature extraction method which is based on movement object in video.
在对现有视频运动分析方法进行分析比较的基础上，提出了一种基于视频中运动对象的运动特征提取方法。
Compared to other methods, the feature extraction of a truncation set needs fewer samples and has higher recognition rate, which plays an important role in radar clutter recognition.
截集特征提取雷达杂波识别方法所需样本数目少，识别率高，在雷达杂波识别领域具有重要应用。
This text introduced the concept of speaker recognition system firstly, then analyzed a few extraction methods of speech feature parameters in common use and a few models of speaker recognition.
本文首先介绍了说话人识别系统的概念，然后分析了几种常用的语音特征参数的提取方法以及说话人识别的几种模型。
This thesis mainly deals with the feature extraction technologies in infrared image and target multi-classification methods.
本文重点研究了红外图像目标的特征提取技术和多目标分类方法。
Finally, a series of experiments are designed and implemented to compare different feature extraction and classification methods.
最后设计和完成一系列实验，比较了不同特征提取方法和分类方法的优劣。
Experiment show that all the series of processing methods are effective for feature extraction.
实验表明，这一系列处理方法对染色体特征的自动提取是十分有效的。
Recently, many methods of linear feature extraction were proposed.
近年来，人们已经提出许多种线特征提取的方法。
The key algorithms of facial expression recognition are studied in this paper and we focus our attention on the research of methods for feature extraction.
本文在研究表情识别关键算法的基础上，将重点放在特征提取方法的研究。
This paper goes on the rolling bearing as the research object, researching the new theories and methods of bearing fault signal feature extraction.
本文以滚动轴承为研究对象，应用新理论，提出轴承故障信号特征提取的新方法。
We get the effective methods for the feature extraction by studying the characteristics of different modulation styles.
分析了不同调制样式的特征，得到了有效提取这些特征的方法。
In this paper, the theoretical knowledge and practical methods on medical image segmentation and feature extraction are studied and analyzed.
本文研究并分析了医学图像分割和医学图像特征提取的相关理论与方法。
Other preprocessing methods such as discrete curvature estimation and feature point extraction are also studied, and a section-feature recognition algorithm, based on curve fitting, is proposed.
研究了用圆弧曲率估算截面数据离散曲率的方法和特征点提取方法，提出了基于曲线拟合的截面特征识别方法。
These methods however do not provide an effective feature extraction process, leading to difficulties and inefficiency in designing the neural networks.
但是，这些方法并未提出一个有效的特征抽取算法，导致神经网络的设计较困难、效率较低。
This paper was a review of the methods of feature extraction and feature selection for spam image identification.
对垃圾图像判别问题中的特征提取和特征选择研究现状进行了总结。
The ordinary methods of feature extraction usually hypothesize the vibration signals have the characters of stationary and Gaussian.
当前常用的机械故障征兆提取方法，多是假设振动信号具有平稳和高斯分布的特性。
The method of product feature extraction and analysis can be divided into supervised machine learning methods, semi-supervised machine learning algorithms and unsupervised machine learning algorithm.
产品评价对象的提取与分析的方法主要分为有监督的机器学习方法、半监督的机器学习算法、无监督的机器学习算法。
After analyzing their properties in time and frequency domain, we propose two feature-extraction methods and performed some classification experiments based on support vector machine. Ther...
在分析两类飞机时域、频域特性的基础上给出了两种特征提取方法，利用支持矢量机进行了识别实验，结果表明所提出的方法是可行的。
After analyzing their properties in time and frequency domain, we propose two feature-extraction methods and performed some classification experiments based on support vector machine. Ther...
在分析两类飞机时域、频域特性的基础上给出了两种特征提取方法，利用支持矢量机进行了识别实验，结果表明所提出的方法是可行的。
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