A New Real-Time Video Watermarking Scheme Based on Mutative Area

2015 ◽  
Vol 740 ◽  
pp. 588-591
Author(s):  
Chun Xing Wang ◽  
Yao Wei ◽  
Tong Liu ◽  
Fei Han
Keyword(s):  
Real Time ◽  
Video Quality ◽  
Video Watermarking ◽  
Experimental Results ◽  
Arnold Transform ◽  
Frame Dropping ◽  
Dct Coefficients ◽  
Embed Watermark ◽  
Watermarking Scheme

A new algorithm of video watermarking based on changed area is studied in this paper. We propose a method to located area which pixels change greatly from three successive frames of uncompressed video by using three-frame differencing. Then we choose the region where changes drastically to embed watermark by using the Quantization Modulation algorithm in DCT coefficients. In order to have a good performance on video quality and embed more information, we divided the binary watermark into two parts which obtain a logistic Arnold transform before being embedded. The experimental results indicates that the proposed scheme has a good performance to frame dropping, frame cropping, frame rating, Gaussian noising, MPEG2 compression, etc. and it has a advantage on little degrading the video quality.

scholarly journals Reversible color video watermarking scheme based on hybrid of integer-to-integer wavelet transform and Arnold transform

2020 ◽  
Vol 10 (4) ◽  
pp. 3519
Author(s):  
Fahad Layth Malallah ◽  
Awatif Ali Jafaar ◽  
Nidaa Hasan Abbas ◽  
Mustafa Ghanem Saeed
Keyword(s):  
Wavelet Transforms ◽  
Digital Video ◽  
Video Watermarking ◽  
Arnold Transform ◽  
Grey Scale ◽  
Video Frames ◽  
Digital Contents ◽  
Illegal Copying ◽  
Integer Wavelet ◽  
Watermarking Scheme

<p>Unauthorized redistribution and illegal copying of digital contents are serious issues which have affected numerous types of digital contents such as digital video. One of the methods, which have been suggested to support copyright protection, is to hide digital watermark within the digital video. This paper introduces a new video watermarking system which based on a combination of Arnold transform and integer wavelet transforms (IWT). IWT is employed to decompose the cover video frames whereby Arnold transform is used to scramble the watermark which is a grey scale image. Scrambling the watermark before the concealment makes the transmission more secure by disordering the information. The system performance was benchmarked against related video watermarking schemes, in which the evaluation processes consist of testing against several video operations and attacks. Consequently, the scheme has been demonstrated to be perfectly robust.</p>

scholarly journals Efficient Security Based Video Watermarking Technique using Chaotic Encryption with Discrete Cosine Transform

2019 ◽  
Vol 8 (6) ◽  
pp. 1416-1427
Keyword(s):  
Discrete Cosine Transform ◽  
Digital Video ◽  
Video Watermarking ◽  
Chaotic Encryption ◽  
Median Filtering ◽  
Arnold Transform ◽  
Cosine Transform ◽  
Digital Video Watermarking ◽  
Proposed Model ◽  
Dct Coefficients

In this paper, a novel chaotic encryption-based blind digital video watermarking technique (DVWT) is presented for grayscale and color images. This method makes use of Discrete Cosine transform (DCT) prior to embed the watermark in the hosting video. The hosting video is split into frames of 8*8 nonoverlapping blocks before employing DCT, and watermark bit is implanted by altering the variations among the nearby DCT coefficients of neighboring blocks. Arnold transform is applied for chaotic encryption to offer extra security to the watermark. A set of three versions of the proposed model has been applied and the results are investigated. The experimental outcome confirms that the DCT-VWT is efficient on different image processing functions such as JPEG compression, sharpening, cropping, and median filtering. The comparative analysis ensures that the presented DCT for digital video watermarking technique (DCT-DVWT) is efficient under subjective as well as objective way.

scholarly journals THE APPLICATION OF SATURATING DETECTORS TO A DCT-DOMAIN WATERMARKING SCHEME

2008 ◽  
Vol 08 (01) ◽  
pp. L65-L79 ◽  
Author(s):  
FABING DUAN ◽  
DEREK ABBOTT ◽  
FRANÇOIS CHAPEAU-BLONDEAU
Keyword(s):  
Background Noise ◽  
Pulse Amplitude ◽  
Noise Filtering ◽  
Frequency Range ◽  
Arnold Transform ◽  
Matched Filters ◽  
Nonlinear Dynamical ◽  
Dct Domain ◽  
Dct Coefficients ◽  
Watermarking Scheme

The present paper proposes a discrete cosine transform (DCT) domain watermarking scheme by exploiting nonlinear dynamical saturating detectors in the design of a watermark detection process. A binary copyright character, i.e. watermark to be hidden into an image, is firstly reordered into a binary zig-zag sequence, and then mapped onto the pulse amplitude modulated signal. A certain desynchronization time delay can be deliberately placed into one code of the modulated signal, and is tolerated due to the superior robustness of nonlinear detectors over matched filters. A selected set of DCT coefficients of a host image in a mid frequency range is shuffled by the Arnold transform, which makes it look more like background noise with respect to the watermark signal. Then, the watermark signal is embedded in the set of shuffled DCT coefficients. The copyright character can be extracted by a nonlinear saturating detector without prior knowledge of the original image and watermark, i.e. blind watermark detection. Interestingly, a higher match between the original watermark character and the extracted one can be further achieved by a parallel array of nonlinear detectors via the mechanism of array stochastic resonance. Robustness of the proposed watermarking scheme is shown in the presence of noise, filtering, cropping, and compression.

A Video Digital Watermarking Algorithm Based on Chaotic Maps

2014 ◽  
Vol 989-994 ◽  
pp. 1469-1472
Author(s):  
Ya Wen Li
Keyword(s):  
Real Time ◽  
Digital Watermarking ◽  
Wavelet Transformation ◽  
Chaotic Maps ◽  
Color Image ◽  
Low Frequency ◽  
Video Watermarking ◽  
Space Correlation ◽  
Dct Coefficients ◽  
Lifting Wavelet

The scrambled watermark is embedded in DCT coefficients of low-frequency sub image with the Brightness Component of original color image after lifting wavelet transformation. Before embedding the watermark, the image confusion method is used to eliminate the space correlation of the pixels and improves the security and robustness. The results showed that the algorithm is easy to carry out with the real-time request of video watermarking.

A Novel Digital Watermarking Algorithm for Medical Color Image

2013 ◽  
Vol 756-759 ◽  
pp. 3303-3308
Author(s):  
Xin De Sun
Keyword(s):  
Digital Watermarking ◽  
Medical Image ◽  
Color Image ◽  
Random Sequence ◽  
Principal Component ◽  
Experimental Results ◽  
Watermark Image ◽  
Arnold Transform ◽  
High Transparency ◽  
Dct Coefficients

In this paper, we propose a novel medical color image digital watermarking algorithm, which can realize watermark capacity, transparency and robustness effective compromise. We encrypt the watermark image by Arnold Transform at first and then take it into a random sequence. The principal component of medical image is divided into some sub-blocks with 4×4 and each block is transformed by DCT. One bit of watermark is embedded by comparing the size of specific DCT coefficients in the adjacent sub-blocks. Watermark can be extracted without the original medical image. The experimental results show that the digital watermarking algorithm has a high transparency and big capacity as well as certain robustness.

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