A blind watermark embedding and detection scheme based on DCT apply to core image
Shen Jiang-hai · Electronic Instrumentation Customers · 2006
This article proposes a blind watermark algorithm based Discrete Cosine Transformation, which is applied to rock core Image, from using the relationship between the embedded watermark pixels and it's eight neighbor pixels, we can detect the watermark, and use the Hamming code to improve the correction of extracted watermarks, boost up it's robustness. The experimental results indicate the watermarks are transparent and robust against some kinds of process such as JPEG compression, noise, cut out, lighteness and contrast adjustment and so on.