A Contrast-Sensitive Visible Watermarking Scheme

2006 ◽  
Vol 13 (2) ◽  
pp. 60-66 ◽  
Author(s):  
Biao-Bing Huang ◽  
Shao-Xian Tang
Keyword(s):  
Visible Watermarking ◽  
Watermarking Scheme

A Visible Watermarking Scheme for JPEG Images Based on Modification of Frequency Coefficients

2021 ◽  
Vol 55 (5) ◽  
pp. 444-453
Author(s):  
D. R. Denslin Brabin ◽  
Sriramulu Bojjagani ◽  
D.R. Denslin Braja
Keyword(s):  
Jpeg Images ◽  
Visible Watermarking ◽  
Watermarking Scheme

Visible Watermarking Scheme for Quick Response Code Based on Reversible Data Hiding

2014 ◽  
Vol 6 (3) ◽  
pp. 47-63 ◽  
Author(s):  
Shun Zhang ◽  
Tiegang Gao
Keyword(s):  
Data Hiding ◽  
Reversible Data Hiding ◽  
Mobile Internet ◽  
Qr Code ◽  
Quick Response ◽  
Original Image ◽  
Response Code ◽  
Quick Response Code ◽  
Visible Watermarking ◽  
Watermarking Scheme

Quick Response Code (QR Code) has become an important entrance of O2O (Online to Offline) in the era of mobile internet. Many applications, such as transformation of URLs, the descriptions of these images, and so on can be realized through embedding QR Code into images. However, the embedding of QR Code may destroy some image details in the corresponding area, which is annoying, especially in these applications that need high precision. The reversible recovery of original image is of importance. A reversible visible watermarking scheme is proposed for embedding QR Code into images. One can decode the information that is encoded in the QR Code and reversibly recover the original image after the QR Code is scanned successfully. Optimization has been achieved both by utilizing the features of QR Code when encoding and decoding in the visible watermarking period and by utilizing the blocking, scanning, and preprocessing of information in the reversible data hiding period. Experimental results have demonstrated the validity and efficiency of the proposed scheme. Better image quality has been achieved by the proposed scheme compared with existing schemes.

scholarly journals A Novel Improved Reversible Visible Image Watermarking Algorithm Based on Grad-CAM and JND

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Jiasheng Qu ◽  
Wei Song ◽  
Xiangchun Liu ◽  
Lizhi Zhao ◽  
Xiaobing Zhao
Keyword(s):  
Image Watermarking ◽  
Region Of Interest ◽  
Just Noticeable Difference ◽  
Selection Strategy ◽  
Visible Image ◽  
Content Protection ◽  
Watermark Embedding ◽  
Visible Watermarking ◽  
Integrity Protection ◽  
Watermarking Scheme

With the rapid access convenience of content brought by 5G technology, the integrity protection of content becomes more important. The reversible visible watermarking algorithm has attracted more attention due to its effective content protection. In this paper, a novel improved reversible visible image watermarking scheme based on gradient-weighted class activation mapping (Grad-CAM) and the just noticeable difference (JND) model has been presented. The proposed region of interest (ROI) selection strategy is used to locate the main protected body of images for watermark embedding. Divide the watermark and ROI into nonoverlapping blocks in the same way and then embed the classified two types of watermark blocks into corresponding ROI blocks with the JND model. The optimal bit positions for watermark embedding can be selected adaptively with JND threshold and achieve the tradeoff between the watermark visibility and watermarked image quality. For lossless image recovery and watermark extraction, the recovery information is reversibly hidden into watermarked image. In the experiments, the same process of grayscale images is used to each channel separately for color images watermarking. Besides, there are six aspects in this paper to estimate the proposed scheme; with the comparison to other reversible visible watermarking schemes, experimental results demonstrate the effectiveness of our proposed scheme.

scholarly journals Visible Watermarking Technique Based on Human Visual System for Single Sensor Digital Cameras

2017 ◽  
Vol 2017 ◽  
pp. 1-18 ◽  
Author(s):  
Hector Santoyo-Garcia ◽  
Eduardo Fragoso-Navarro ◽  
Rogelio Reyes-Reyes ◽  
Clara Cruz-Ramos ◽  
Mariko Nakano-Miyatake
Keyword(s):  
Visual System ◽  
Human Visual System ◽  
Storage System ◽  
Digital Cameras ◽  
Grey Scale ◽  
Filter Array ◽  
Visible Watermarking ◽  
Single Sensor ◽  
Almost All ◽  
Watermarking Scheme

In this paper we propose a visible watermarking algorithm, in which a visible watermark is embedded into the Bayer Colour Filter Array (CFA) domain. The Bayer CFA is the most common raw image representation for images captured by single sensor digital cameras equipped in almost all mobile devices. In proposed scheme, the captured image is watermarked before it is compressed and stored in the storage system. Then this method enforces the rightful ownership of the watermarked image, since there is no other version of the image rather than the watermarked one. We also take into consideration the Human Visual System (HVS) so that the proposed technique provides desired characteristics of a visible watermarking scheme, such that the embedded watermark is sufficiently perceptible and at same time not obtrusive in colour and grey-scale images. Unlike other Bayer CFA domain visible watermarking algorithms, in which only binary watermark pattern is supported, proposed watermarking algorithm allows grey-scale and colour images as watermark patterns. It is suitable for advertisement purpose, such as digital library and e-commerce, besides copyright protection.

Sign in / Sign up

Export Citation Format

Share Document