Title: A Robust HDWT-DCT Based Watermarking Scheme Against Cropping Attacks

Year of Publication: Jan - 2015
Page Numbers: 173-176
Authors: Ping-Sheng Huang , Te-Jen Chang and I-Hui Pan
Conference Name: The International Conference on Digital Information Processing, Data Mining, and Wireless Communications (DIPDMWC2015)
- United Arab Emirates


In this paper, we propose a watermarking technique based on Haar Discrete Wavelet Transform-Discrete Cosine Transform (HDWT-DCT) by using matrixbased Two-dimensional Linear Discriminant Analysis (2DLDA) for color images. By embedding the reference watermark and using matrix-based 2DLDA scheme, we do not need all the embedded information of watermark and apply only part of matrix-based samples from the reference watermark for 2DLDA. The experimental results have shown that our method can extract the watermark correctly and can still resist against the cropping attacks efficiently.