A spatial domain‐based color image blind watermarking scheme integrating multilevel discrete Hartley transform

2021 ◽  
Author(s):  
Xueting Zhang ◽  
Qingtang Su
Keyword(s):  
Color Image ◽  
Spatial Domain ◽  
Blind Watermarking ◽  
Discrete Hartley Transform ◽  
Hartley Transform ◽  
Watermarking Scheme

Genetic-Algorithm-Based Optimization of Fragile Watermarking in Discrete Hartley Transform Domain

2016 ◽  
pp. 103-127
Author(s):  
Sudipta Kr Ghosal ◽  
Jyotsna Kumar Mandal
Keyword(s):  
Genetic Algorithm ◽  
Color Images ◽  
Fragile Watermarking ◽  
Transform Domain ◽  
One Dimensional ◽  
Discrete Hartley Transform ◽  
Hartley Transform ◽  
Message Digest ◽  
Simulation Results ◽  
Watermarking Scheme

In this chapter, a fragile watermarking scheme based on One-Dimensional Discrete Hartley Transform (1D-DHT) has been proposed to verify the authenticity of color images. One-Dimensional Discrete Hartley Transform (1D-DHT) converts each 1 x 2 sub-matrix of pixel components into transform domain. Watermark (along with a message digest MD) bits are embedded into the transformed components in varying proportion. To minimize the quality distortion, genetic algorithm (GA) based optimization is applied which yields the optimized component corresponding to each embedded component. Applying One-Dimensional Inverse Discrete Hartley Transform (1D-IDHT) on 1 x 2 sub-matrices of embedded components re-generates the pixel components in spatial domain. The reverse approach is followed by the recipient to retrieve back the watermark (along with the message digest MD) which in turn is compared against the re-computed Message Digest (MD') for authentication. Simulation results demonstrate that the proposed technique offers variable payload and less distortion as compared to existing schemes.

scholarly journals Cryptanalysis and Improvement of the Robust and Blind Watermarking Scheme for Dual Color Image

2015 ◽  
Vol 2015 ◽  
pp. 1-10
Author(s):  
Hai Nan ◽  
Bin Fang ◽  
Weibin Yang ◽  
Jiye Qian ◽  
Ming Li ◽  
...  
Keyword(s):  
Theoretical Analysis ◽  
Color Image ◽  
Color Images ◽  
The Internet ◽  
Blind Watermarking ◽  
Watermark Image ◽  
Dual Color ◽  
Improvement Measure ◽  
Original Scheme ◽  
Watermarking Scheme

With more color images being widely used on the Internet, the research on embedding color watermark image into color host image has been receiving more attention. Recently, Su et al. have proposed a robust and blind watermarking scheme for dual color image, in which the main innovation is the using of two-level DCT. However, it has been demonstrated in this paper that the original scheme in Su’s study is not secure and can be attacked by our proposed method. In addition, some errors in the original scheme have been pointed out. Also, an improvement measure is presented to enhance the security of the original watermarking scheme. The proposed method has been confirmed by both theoretical analysis and experimental results.

scholarly journals AN EFFICIENT AND SECURED NON BLIND WATERMARKING SCHEME FOR COLOR IMAGES USING DWT AND ARNOLD TRANSFORM

2010 ◽  
pp. 183-191
Author(s):  
Nagaraj V. Dharwadkar ◽  
B. B. Amberker
Keyword(s):  
Color Image ◽  
Blind Watermarking ◽  
Arnold Transform ◽  
Control Techniques ◽  
Extraction Algorithm ◽  
Different Types ◽  
Image Blurring ◽  
Frequency Components ◽  
Watermarking Scheme ◽  
Image Transformations

In the early days, encryption and access control techniques are used to protect the ownership of image. Recently, the watermarking schemes are utilized to define the copyright of image. Digital watermarking is a concept of embedding a special security pattern into cover image. It has recently become important in various application areas of image processing. In this paper we present a new invisible, robust, non blind frequency domain watermarking scheme. This scheme embeds the monochrome (logo) watermark into the high and middle {HL, LH, HH} frequency bands of Arnold transformed luminance channel of the color image. The security of scheme is improved by scrambling the luminance channel of the color image using Arnold transform. In order to increase the detection speed and efficiency of algorithm, the location of modified high and middle frequency components are stored into key array. Use of this key array improves the speed of the extraction algorithm. The experimental results show that the watermark is robust against different types of attacks like image cropping, image filtering, image Compression, image blurring, and Image transformations. Further, the results of the proposed scheme are analyzed on the set of images.

Color image blind watermarking scheme based on QR decomposition

2014 ◽  
Vol 94 ◽  
pp. 219-235 ◽  
Author(s):  
Qingtang Su ◽  
Yugang Niu ◽  
Gang Wang ◽  
Shaoli Jia ◽  
Jun Yue
Keyword(s):  
Color Image ◽  
Qr Decomposition ◽  
Blind Watermarking ◽  
Watermarking Scheme

scholarly journals Tamper Detection in Color Image

2008 ◽  
Vol 5 (1) ◽  
pp. 155-159
Author(s):  
Baghdad Science Journal
Keyword(s):  
Color Image ◽  
Spatial Domain ◽  
Tamper Detection ◽  
Color Images ◽  
Fragile Watermarking ◽  
Original Image ◽  
Digital Color Images ◽  
Watermarking Scheme

In this work a fragile watermarking scheme is presented. This scheme is applied to digital color images in spatial domain. The image is divided into blocks, and each block has its authentication mark embedded in it, we would be able to insure which parts of the image are authentic and which parts have been modified. This authentication carries out without need to exist the original image. The results show the quality of the watermarked image is remaining very good and the watermark survived some type of unintended modification such as familiar compression software like WINRAR and ZIP

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