Low Frequency Component-Based Watermarking Scheme using 2D Datamatrix

摘要: A robust watermark should be able to withstand most image manipulations such as cropping, additive noise and JPEG type compressions. It also hold telltale signs of attacks that are unknown the user. Both these aims can fulfilled by embedding two watermarks, one fragile in different domains where watermarks not vulnerable aforementioned manipulations. is a well known fact watermarking DC components discrete cosine transform (DCT) stand against compression. We build on this concept inserting domain further enhance robustness. use 2D Datamatrix has error correction capabilities we show used insert data imperceptibly into host image. second embedded low pass component any wavelet decomposition at specific level only author. This improves resistance scheme attack. Our experimental results indicate invisible carry significant information many Keyword: Datamatrix, Low frequency components, Transform domain, Error correction, Wavelet decomposition, Watermark attacks, Robustness, Image watermarking.