Print-Scan Resilient Text Image Watermarking Based on Stroke Direction Modulation for Chinese Document Authentication

@inproceedings{Tan2012PrintScanRT,
  title={Print-Scan Resilient Text Image Watermarking Based on Stroke Direction Modulation for Chinese Document Authentication},
  author={Lina Tan and Xingming Sun and Guang Sun},
  year={2012}
}
Print-scan resilient watermarking has emerged as an attractive way for document security. This paper proposes a stroke direction modulation technique for watermarking in Chinese text images. The watermark produced by the idea offers robustness to print-photocopyscan, yet provides relatively high embedding capacity without losing the transparency. During the embedding phase, the angles of rotatable strokes are quantized to embed the bits. This requires several stages of preprocessing, including… CONTINUE READING

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