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watermark

2 repositories

This is an implementation of embedding and extracting a digital watermark in a PDF document. The code uses an LDPC code, a Hadamard code, and multiple sequence alignment to increase robustness.

Java 14 4 Updated Oct 28, 2017

一款基于DCT算法的水印嵌入和提取的移动智能终端数字图像证据系统Android APP,水印载体形式包括二维码和图片两种,在简易模式下,水印信息仅包括IMEI;在完整模式下,水印信息包括地点、时间、IMEI、Android ID。

Java 36 11 Updated Jul 15, 2017