查询词典 DWT

In this paper, a semi-fragile watermarking algorithm based on Human Visual System and Discrete Wavelet Transform is presented.

在系统分析了人类视觉系统的特性之后，本文提出了一种基于HVS和DWT的半脆弱水印算法。

By using the character of biorthogonal wavelets,which have dyadic rational filter coefficients,this paper presents a fast multiplierless DWT algorithm,which is very suitable for EZW image coding.

在此基础上，针对具有二进系数的双正交小波滤波器，提出了一种适合零树编码的快速小波变换算法，此算法不但以移位代替了乘法运算，而且与使用原始滤波器系数的变换等效。

DWT is testified to be a new effective way in analyzing the echolocation signals of bats.

因此，小波分析是分析蝙蝠回声定位叫声的一种有效的新途径，有其广泛的应用价值。

After expatiation of the lifting scheme theory, the realization of 2-D DWT architecture by now is introduced.

在阐述本课题实现方案的原理——提升算法原理的基础上，对目前二维离散小波变换的硬件实现进行分析。

A scheme of digital watermarking using the combination of DWT and FICA is proposed.

提出了一种结合离散小波变换和快速独立分量分析的图像数字水印方法。

Company mainly engages in ship repairing and modifacation project, the geographical position is good, abundant human resources and has a strong management team, the existing area 396000 square meters, wharf length 480 metres, 300 workers, specialized technical personnel are more then 150 people, after years of operation, we are accumulated rich experience in ship repair and technical managementand, company owns a six DWT floating dock (lifting force 15000 tons, 35 meters inner wider, 210 meters in length), equipped with first-class facilities workshop 10000 square meters, 6pcs.of elevated car, 4 sets of 15 tons dock crane , 2 sets of 3060 type portal jib crane, more than 200 sets of equipments, air compressor, lathe, electric welder, CO2 welders etc.

公司主要从事国内外船舶厂内坞修及航修和船舶改造工程，公司所处地理位置佳，人力资源丰富，拥有强大的管理团队，现有土地396000㎡，在建码头480米，职工300人，其中专业技术人员达145人以上，经过多年运营，在船舶修理及改造工程中累积了丰富的船舶修理改造和技术管理经验，公司拥有6万吨级浮船坞一座(举力15000吨，内宽35米，长210米)，配备一流的硬件设施厂房10000多平方米，高架车6台，坞吊15吨4台，门吊3060型2台，另有空压机、电焊机、 CO2焊机、车床等各类设备200多台。

Debt reduction, taishan petrochemical are focused on Singapore and Malaysia floating dock in China and warehousing and storage, and with the taishan quanzhou business has expanded and docks-he'd spend six ships to float storage tanker and super fujian 100000 DWT dock construction is finished, add in late new chemical storage, nansha phase mainland storage capacity compared to the 2008 new 1.45 times.

减债后，泰山石化正集中精力发展新加坡及马来西亚浮动仓储、及中国仓储码头同泰山泉州修船厂业务，并已扩大浮动仓储至6艘超级油轮，而福建10万吨级码头建设则在去年底完工，加上南沙二期新增化工品仓储，内地仓储总容量对比2008年新增1.45倍。

Basic knowledge of digital watermarking such as background, fundamental theory, characteristics, algorithm evaluating is introduced in this thesis.

本文简介了数字水印背景、基本原理、特征、算法评测等基本知识，介绍了目前主流数字水印算法，给出了DCT域和DWT域两种数字盲水印算法。

This paper presented a robust image watermarking algorithm utilizing the stability of SIFT points and the features of DWT.

利用数字图像SIFT(scale invariant feature transform)特征的稳定性和小波变换的特性，提出了一种抗仿射变换和剪切的鲁棒水印算法。

Because the genetic algorithms could search the optimization of objective function randomly, which via the evolution of groups, our work is based on the embedding/detecting way of "DWT-Based Audio Watermarking Using Support Vector Regression and Subsampling". And this method provides a preliminary discussion on the application of GA, which searching the individual with the highest fitness of attack-resistance in the aggregate of the optimal embedding strength. As an optimization solution of obtaining the optimal embedding strength, it could achieve an adaptive policy, and find a reasonable balance between the robustness and inaudibility of the watermark, just for the better robustness and inaudibility in the algorithm.

遗传算法是通过群体进化来随机搜索目标函数的最优化问题，对于前述基于支持向量回归机的小波域数字音频盲水印算法，进一步地探讨采用遗传算在嵌入强度集合中搜索对抗攻击能力适应度较高的个体，从而得到最佳嵌入强度的一个优化方案，以实现自适应策略，也使本算法能在水印的鲁棒性和不可感知性之间寻找到合理的平衡点，从而具有更良好透明性和鲁棒性。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。