scholarly journals The Modified Frequency Algorithm of Digital Watermarking of Still Images Resistant to JPEG Compression

2015 ◽  
Vol 15 (07) ◽  
Author(s):  
Vladimir Batura ◽  
Alexander Tropchenko
Keyword(s):  
Digital Watermarking ◽  
Jpeg Compression ◽  
Still Images

scholarly journals A Watermarking Method for Selective Image Authentication Tollerant to JPEG Compression, Brightness and Contrast Adjustments

2020 ◽  
Vol 6 (3) ◽  
pp. 92-99
Author(s):  
A. Zhuvikin
Keyword(s):  
Wavelet Transform ◽  
Digital Watermarking ◽  
Visual Quality ◽  
Image Authentication ◽  
Jpeg Compression ◽  
Discrete Wavelet ◽  
Embedding Capacity ◽  
Image Histogram ◽  
Embedding Technique ◽  
Promising Application

One of the most promising application of the digital watermarking is the selective image authentication (SIA) systems. In order to implement such a system one requires an embedding algorithm with an appropriate capacity. In addition, an embedding method is to be robust for the class of non-malicious manipulations which the SIA system is designed for. We propose the new method which has a significant embedding capacity while still being tolerant to JPEG compression, brightness and contrast adjustments. This was possible due to the extension of the well-known discrete wavelet transform embedding technique. We propose two-step embedding scheme and the use of image histogram equalisation and recovering operations. The experiment results show acceptable tolerance to JPEG compression, brightness and contrast adjustments with good visual quality in terms of PSNR just after embedding.

Digital watermarking of still images with gray-level digital watermarks

2000 ◽  
Vol 46 (1) ◽  
pp. 137-145 ◽  
Author(s):  
Xia-Mu Niu ◽  
Zhe-Ming Lu ◽  
Sheng-He Sun
Keyword(s):  
Digital Watermarking ◽  
Gray Level ◽  
Still Images ◽  
Digital Watermarks

A Digital Watermarking Method by Double Encryption Based on Arnold and Chaos in DCT Domain

2011 ◽  
Vol 65 ◽  
pp. 104-107 ◽  
Author(s):  
Jian Hua Song ◽  
Yong Zhu
Keyword(s):  
Intellectual Property ◽  
Digital Watermarking ◽  
Efficient Method ◽  
Low Frequency ◽  
Jpeg Compression ◽  
Intellectual Property Protection ◽  
Experimental Results ◽  
Noise Filtering ◽  
Dct Domain ◽  
Arnold Scrambling

Digital watermarking is an efficient method for the intellectual property protection and identification. A digital watermarking method by double encryption based on Arnold and chaos in DCT domain was proposed in this paper. First, the digital watermarking was transformed by Arnold scrambling, and then the watermarking was encrypted by chaos system again, so it made the watermarking get double encryption. The encrypted watermarking was embedded into the parts of low-frequency coefficients. The experimental results show that the algorithm is effective and robust for several attacks such as common noise, filtering, cropping and JPEG compression, as well as its good security.

Digital watermarking of still images with color digital watermarks

2009 ◽  
Author(s):  
Abdul R. Zubair ◽  
Olasebikan A. Fakolujo ◽  
Periasamy K. Rajan
Keyword(s):  
Digital Watermarking ◽  
Still Images ◽  
Digital Watermarks
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