在进行加密打包原始资源之间，应先对其数字内容添加水印，并声明版权。
Performing encryption amid the aboriginal ability package, you should add watermarks to their agenda agreeable and absorb statement.
因此有必要对文档图像进行分割和分类，在文字区域和图像区域分别添加水印。
Thus, it's necessary to separate the document image and then embed watermarking in character area and image area.
而脆弱水印则主要用来对图像进行防篡改验证，它能够检测到所添加水印的微小变化。
Fragile watermarks are used for authentication purposes and are capable of detecting minute changes of the watermark's content.
一款图片批量编辑工具，可以批量对图像文件进行调整大小，旋转，添加水印，转换格式的操作。
A batch photo editing tools, batch can adjust the size of image files, rotate, add watermarks, format conversion operation.
iText 库中的类用于以各种字体来生成PDF文本、在 PDF 文档中生成表格、为页添加水印等。
The iText library contains classes to generate PDF text in various fonts, generate tables in PDF document, add watermarks to pages, and so on.
通过对关系数据库特征的分析，发现数据允许在一定范围内的变形，利用这个特征提出对关系型数据添加水印的方案。
Through deep analysis on the characteristics of relational databases, it is found that data in a relation may be allowed to take transformations to some extent.
“轻松水印”是一款专业的图象加水印批量加注工具。通过它，我们可以快速、准确、方便、批量添加独特标识到图片上。
Relaxed watermark "is a professional image watermark volume increases add tools. Through it, we can quickly, accurately and conveniently. Quantities to add unique identification photographs."
“轻松水印”是一款专业的图象加水印批量加注工具。通过它，我们可以快速、准确、方便、批量添加独特标识到图片上。
Relaxed watermark "is a professional image watermark volume increases add tools. Through it, we can quickly, accurately and conveniently. Quantities to add unique identification photographs."
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