Watermark location via back-lighting and recto removal
Watermark location via back-lighting and recto removal
复制标题
通过背光和正面去除来定位水印
DOI：
10.1007/s10032-009-0080-1
复制
发表时间：
2009
期刊：
影响因子：
--
通讯作者：
H. Hiary
中科院分区：
文献类型：
--
作者：
R. Boyle;H. Hiary
我们考虑的问题，定位在页面上的古老的文件，已被扫描和背光的水印：这个问题是感兴趣的codicologists在识别和跟踪纸张材料。通常情况下，感兴趣的文件被磨损或损坏，所有的信息都是非常不利的信噪比的受害者-这是特别真实的“隐藏”数据，如水印和链线。我们提出了一种方法来去除正面，然后突出显示这样的“隐藏”数据。结果仍然是非常低的信号质量，我们还提出了一个统计方法来定位水印从一个已知的词典的片段。研究结果来自一本全面扫描的19世纪的《古兰经》。这种方法有助于立即利用改进已知水印，并区分孪生副本。
We consider the problem of locating a watermark in pages of archaic documents that have been both scanned and back-lit: the problem is of interest to codicologists in identifying and tracking paper materials. Commonly, documents of interest are worn or damaged, and all information is victim to very unfavourable signal-to-noise ratios—this is especially true of ‘hidden’ data such as watermarks and chain lines. We present an approach to recto removal, followed by highlighting of such ‘hidden’ data. The result is still of very low signal quality, and we also present a statistical approach to locate watermarks from a known lexicon of fragments. Results are presented from a comprehensively scanned nineteenth century copy of the Qur’ān. The approach has lent itself to immediate exploitation in improving known watermarks, and distinguishing between twin copies.