查询词典 preprocessing

The arithmetic of preprocessing the data and the program are introduced in detail in this paper.

详细叙述了数据预处理的算法和程序实现过程。

In this paper we study the text preprocessing and automatic rule acquisition technology for information extraction.

本文对信息抽取中的文本预处理和规则的自动学习技术进行了研究。

There are many noise sources in measuring the seismometer transfer function, the main noise sources are investigated. The method of cross-special analysis is presented, flow process diagram of computing is given, the algorithms are discussed in detail, such as low-pass digital filter, computing of seismometer transfer function initial values, time domain convolution, bilinear transformation, estimation of power spectrum and cross-spectrum, window functions and preprocessing of measuring data etc.

在地震计传递函数测试过程中的存在多中噪声，本文分析了主要的噪声来源；介绍了用互谱分析方法测试地震计频率特性的基本原理和方法；给出采用该方法确定地震计传递函数的算法流程图；并对计算过程中采用的低通滤波器、地震计传递函数的初值确定方法、卷积运算方法、自谱和互谱估计、采用的窗函数和测试数据的预处理进行了详细讨论。

The original gray level image was changed into the macroscopical drawing information by preprocessing, threshold selection, image bivalency, edge detection and contour extraction and segmentation.

对原始数字图像实施预处理、二值化、轮廓提取及细化等处理后，将图像信息转变成宏观图形信息。

The system consists of two main parts. One is status recognition system of calcine band flame, which is composed of image capturing, preprocessing, segmentation, feature extraction and pattern recognition. The other is neural network control system using Gaussian potential function network.

系统主要由两部分组成，一部分是回转窑煅烧带火焰燃烧状态识别系统，包括火焰图象获取、预处理、分割、特征提取与识别；另一部分是基于高斯基函数神经网络的控制系统。

Firstly,after the image preprocessing,some features such as axis degree,circularity and central moment are extracted,then BP net is used as weak study machine,and integrate historical information into successive boosting learning.

预处理棉纤维的横截面图，把体现棉纤维的特征的指标从纤维横截面图像中提取出来；然后利用训练好的BP网络作为弱学习算法，使用每一个Boosting分类器学习的历史信息，基于线性回归特征消除策略，消除冗余，据此判别一幅纤维截面图像是否为棉纤维截面图像。

According to the basic principles of information theory, computer graph processing and the chromatics, this thesis mainly researches on the theory and applications of the color images watermark using the characteristics of the human visual system. And then it discusses the preprocessing method such as Image color inversing and image disordering, especially the method of watermark embedding, watermark extracting and watermark attacking etc. At last, an experimental system about watermark embedding and extracting are accomplished.

本文首先根据信息论、计算机图形处理和色彩学中的基本原理，结合人眼的视觉系统特性，对彩色图像水印的理论与应用进行了研究，然后讨论了如何对水印图像进行反色和置乱预处理，尤其是对水印嵌入过程、水印提取过程和水印攻击方法等进行了深入探讨，并最终设计实现了一套完整的具有水印嵌入与提取功能的实验软件。

After preprocessing video of a fluorescing cocklebur leaf to remove noise and normalize changes in lighting, they identified the patches by looking for segmentations of the data that yielded the optimal division of light and dark regions.

通过预处理发荧光的苍耳属植物叶片后，科学家们通过数据的分割找到了发荧光的部分，并找到光照度最佳的区域。

Finally, FastICA in time domain is derived based on instantaneous BSS system, and convolutional mixture BSS algorithm in frequency domain is obtained based on convolutional mixture BSS in time domain. Then we combine the two algorithms together and present the complex-value FastICA algorithm in frequency domain, which is a new BSS technique. We merge preprocessing in time domain and correlation coefficient solution in time domain into this new algorithm and present Time-Frequency domain FastICA BSS System.

最后，本文在瞬时混合盲分离系统基础上推出时域FastICA算法，在时域卷积混合盲分离系统基础上推出频域卷积混合盲分离算法，将这两种算法相结合，提出了频域复值FastICA算法，再将此算法与时域预处理方法以及最后回到时域中的利用相关系数求解分离信号方法相结合，从而建立了基于FastICA的时频域盲分离系统，并将其应用到实际环境中的语音信号盲分离中。

Experimental results show that octree color quantization and vector median filter can perform well in preprocessing of color image for digital camera.

结果表明，用八叉树结构量化和矢量中值滤波对数码相机采集到的彩色图像进行预处理可达到较理想的效果。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。