水印

After user input the extraction key, the topology graph is reconstructed on the heap, and then the decoding algorithm retrieves the watermark. So DGW is more robust and stealthier than other software watermarks.

提取过程是在用户输入提取密钥后在内存中建立拓扑图，然后用解码算法将图结构恢复成水印信息，其鲁棒性更高，隐蔽性更强。

Numerical experiments show that the algorithm is robust to the attacks of the JPEG lossy compressing, cropping, superposing noise and resampling from the screen copy.

数值计算结果表明：该水印算法对JPEG有损压缩、剪切、噪声污染和重采样等攻击具有较强的鲁棒性。

Both of them will not effect quantity of the original image obviously and have the ability of detecting tampers and accurately locating where the watermarked image has been tampered.

实验结果表明，用这两个算法嵌入的水印对图像质量影响很小，都具有良好的篡改检测和定位能力。

The proposed scheme can locate the tampers on the watermarked image accurately by using the high sensitivity on initial value of chaotic mapping.

利用混沌对初值的极端敏感性，能够精确地定位对含水印图像的篡改，并且水印提取无需宿主图像。

But the following side effect is very obvious, For example anyone can be through the easy original works which gets others of network, Especially the picture of digitalization, music, film etc., The person who usurps not only can get the electronic data through the illegal means but also can also have been carried on wanton duplicating to the original works by the authors agreement, It revises production finish reprocessing.

数字水印技术是近年来产生的被公认为能够有效地解决版权纠纷的一项新兴的电子技术，由于其巨大的商业价值，因此它刚一产生，便受到了国际科技界和企业界的高度重视，并且很快地成为了当今信息科学和计算机科学中一个新颖独特而又具有广阔应用前景的研究热点问题。

Watermarking information is embedded by modifying the scale of the distance between vertexes in two-dimensional engineering graphics.

该方案通过修改二维工程图中各实体顶点间的距离比例来嵌入水印信息。

Is a paper and paper products in the production of one large enterprise, the company was founded in 1958, has become the focus of national specialty paper production base, the main products: food wrapping paper / paper forgery , A dictionary of paper, watermark paper, Bible paper / culture of high-grade paper / paper bags of fruit and fruit bags, and so on more than 30 varieties of the four series.

山东莱阳银通纸业有限公司是一家集造纸与纸制品生产于一体的大型企业，公司创建于1958年，现已发展成为国家重点特种纸生产基地，主要产品有：食品包装纸/防伪纸，字典纸，水印纸，圣经纸/高档文化用纸/果袋纸及果袋等四大系列三十多个品种。

The Shandong Laiyang silver passed the paper industry Limited company (the original Yantai Bohai Sea paper used for funerals industry) is a fair papermaking and the paper product production in a bodys Major industry, the company founds in 1958, already developed into the national key special paper production base, the company presently has several international advanced paper mills, above 200 undergraduate course specialized paper technology talented person, 1000 papermaking backbone staff troop, the company main product included: Food packing paper/forgery-proof paper, the dictionary paper, the water printing paper, the bible paper/upscale culture uses the paper/fruit bag paper and the fruit bag and so on four big series more than 30 varieties.

配置默认搜索类别。葡萄套袋，葡萄袋，芒果袋，石榴袋，香蕉袋，梨袋等水果套袋山东莱阳银通纸业有限公司是一家集造纸与纸制品生产于一体的大型企业，公司创建于1958年，现已发展成为国家重点特种纸生产基地，公司现拥有数台国际先进造纸机，200余名本科以上专业造纸技术人才，1000余名造纸骨干职工队伍，公司主要产品有：食品包装纸/防伪纸，字典纸，水印纸，圣经纸/高档文化用纸/果袋纸及果袋等四大系列三十多个品种。

The production of graphite seal, Huatai Paper of this seal is not used for four years to solve the paper on the replacement of vacuum roller machine under frequent maintenance shutdown One major problem, Events specializing in the production of arc-shaped roller, homogenate roller, roller curtain coating, calendering roll, chrome-plated copper guide roll, squeeze roll, rollers, plastic surface sizing roller, roller and other V-type roll, the production of steam-driven corrector, the electric device Tensioner, Manual Tensioner, watermark roller and packet network maintenance, the production of steam pad headbox, wind pressure cage, following paper machine technology, variety renovation, improve speed and assist users to develop products to help users to engage in equipment selection.

生产石墨密封条，此密封条华泰纸业用之四年未换，解决了造纸业上更换真空辊频繁维修下机停产一大难题，专业生产活动弧形辊，匀浆辊、门帘涂布辊、压光辊、镀铜镀铬导辊、压榨辊、托辊、施胶胶面辊、伏辊等各种辊类，生产汽动校正器、电动涨紧器、手动涨紧，水印辊及包网维修，生产汽垫式流浆箱，风压式网箱，承接纸机技术改造、品种翻新、提高车速，并协助用户一起开拓产品，帮助用户从事设备选型。

Our watermarked curve suffers smaller embedding distortions and is robust against common geometrical distortions (e.g., translation, rotation, and scaling), collusions, and printingscaling attacks.

该加水印曲线不仅具有较小的嵌入形变，而且对于一般的图形几何变换、共谋以及打印扫描攻击具有良好的鲁棒性。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。