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A robust color video watermarking scheme based on hybrid embedding techniques
Published in Springer Science and Business Media LLC
2016
Volume: 75
   
Issue: 14
Pages: 8745 - 8780
Abstract
The advancements in network technologies and processing of multimedia contents have provided the way for the distribution and sharing of multimedia contents through networks. This in turn has increased the demand for protecting the multimedia contents in terms of authentication, proof of ownership, copy control etc., which can be achieved by means of what is called digital watermarking. The challenges in watermarking techniques are how to achieve the imperceptibility, robustness and payload simultaneously. This paper presents a new bit plane sliced, scrambled color image watermark embedded on the color cover video using hybrid transforms such as Contourlet Transform (CT), Discrete Wavelet Transform (DWT) and Singular Value Decomposition (SVD) transformations with good imperceptibility, high robustness and at an information rate of (N − number of motion frames) / 24 images per second of the video, where N is the total number of frames in the video. In order to achieve a good level of imperceptibility, we perform the following: First, we slice the color watermark image into 24 slices using the bit plane slicing mechanism. Subsequently, the so called Arnold transformation key is used to scramble those slices, to achieve first-level of security. Thus, an authenticated receiver with an appropriate key alone can descramble the received slices. Second, we embed those scrambled slices on one of the DWT mid-frequency coefficients (LH band) of successive 1-level CT non-motion frames of color cover video. The non-motion frames are identified using the histogram difference based shot boundary detection algorithm. Third, in order to the provide second-level of security, we generate a random eigen vector from the color watermark image, using co-variance matrix and maximum eigen value and then embed it on another DWT mid-frequency coefficients (HL band). Thus, embedding only the slices (not an entire image) will improve the level of imperceptibility. The midfrequency embedding location can withstand against all low pass and hig pass filtering attacks; thereby it increases the level of robustness. Thus, the proposed system is suitable for authentication. Finally, as far as payload is concerned, we need only 24 non-motion frames for embedding our watermark on to the cover video. Hence the remaining frames can be utilized for embedding other color images. Our simulation results prove that the proposed system provides trustworthy performance against various notable image processing attacks, multiple attacks, geometrical attacks, and temporal attacks. © Springer Science+Business Media New York 2015.
About the journal
JournalData powered by TypesetMultimedia Tools and Applications
PublisherData powered by TypesetSpringer Science and Business Media LLC
ISSN1380-7501
Open AccessNo