提取信息

The quality of decrypting watermark under the different sizes of encryption keys has been discussed. The simulation results prove the theoretical analysis.

计算和分析了二元位相密钥的空间分布对水印信息提取质量的影响，计算结果验证了理论的正确性。

Case Study on Image Differencing Method for Land Use Change Detection Using Thematic Data in Renhe District of Panzhihua.

采用图像差值法提取土地利用变化信息方法一以攀枝花仁和区为例

Aimed at the difficulty to extract the fault information of a low speed shaft in a large gearbox, wavelet analysis was used to realize the local analysis of signals in a time and frequency domain simultaneously. The signals were dissembled to a sieres of compactly supported wavelet bases non-redundantly and without leaking.

针对大型齿轮箱低速轴故障信息难以提取的问题，采用小波分析方法对故障数据进行处理以实现信号在时/频域的局域性分析，将其无冗余、无泄漏地分解到一组具有紧支撑性的小波基上。

Information security usually adopt coding and information hiding technology ,though digital watermark belongs to information hiding technology ,its signification and application intention are different with information hiding .The hiding information is similar to the protected color of animal ,because the sneak can not ensure whether there is hiding information when he face a great deal of information to avoid of attack .Digital watermark is enchased into multimedia product to identify copyright data .

大多数时间域水印算法提供简捷有效的水印嵌入方案，且具有较大的信息嵌入量，但对语音信号处理的健壮性较低；变换域水印算法则具有较强的抵抗信号处理和恶意攻击的能力，但嵌入和提取过程相对复杂；压缩域水印算法是直接把水印信号加在压缩音频上的方法，它可以避免压缩算法编解码的复杂过程，但稳健性不高，而且能够嵌入的水印容量不大[2][14]。

So, it is very significative that researching flooded theory of ice flood of Yellow River and studying quickly monitoring model of disaster condition of ice flood and excogitating a set of dynamic RS monitoring pattern of ice flood disaster for national economy and social continuable develop.

因此，研究黄河冰凌灾害成灾机理，探讨冰情信息的快速检测提取模型，制定、完善并形成一套成功且可操作性强的冰凌灾害遥感动态监测模式对防灾减灾及国民经济和社会可持续发展都具有十分巨大的意义。

This line actually fetches useful filtered information for us from the whole data.

此行实际上是过滤的信息提取有用的，我们从整个数据。

From the original signal of"ladder type" undercut, it is difficult to find out the exception, through observing the undercut signal by means of the"focalizing scanning"of wavelet transform in time-frequency domain, the fault features are accurately extracted. The results reveal that this method has flexibility to the variation of tool diameters, tooth of cutter and cutting parameters.

在&阶梯型&过切的原始信号上几乎看不出信号有明显异常现象，在时频空间采用小波分析方法&聚焦式&扫描观察&阶梯型&过切信息，能准确地提取过切的故障特征，研究表明，该方法对刀具直径、刀具齿数及切削参数的改变有较强的适应性。

Then we study the methods of image analysis and data analysis in order to extract the hybridizing intensity and retrieve the biological information.

然后从图像分析和数据分析两方面研究了影响芯片分析的因素，实现了对杂交荧光图像的信号提取和基本的生物信息分析。

The experiment results show that the encoding method is efficient to extract the structure information implicated in protein sequence.

实验结果表明蛋白质序列的EBGW编码方法能够有效的提取字母序列中蕴含的结构信息。

Data collection clip collects and incepts local inspected in fo which is analyzed, disposed and distilled character by computer after A/D conversion.

数据采集卡采集并接收现场检测信息，经A/D转换送入计算机作分析与处理，提取特征。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失