ZWNet: A Deep-Learning-Powered Zero-Watermarking Scheme with High Robustness and Discriminability for Images

In order to safeguard image copyrights, zero-watermarking technology extracts robust features and generates watermarks without altering the original image. Traditional zero-watermarking methods rely on handcrafted feature descriptors to enhance their performance. With the advancement of deep learnin...

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Main Authors: Can Li, Hua Sun, Changhong Wang, Sheng Chen, Xi Liu, Yi Zhang, Na Ren, Deyu Tong
Format: Article
Language:English
Published: MDPI AG 2024-01-01
Series:Applied Sciences
Subjects:
Online Access:https://www.mdpi.com/2076-3417/14/1/435
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author Can Li
Hua Sun
Changhong Wang
Sheng Chen
Xi Liu
Yi Zhang
Na Ren
Deyu Tong
author_facet Can Li
Hua Sun
Changhong Wang
Sheng Chen
Xi Liu
Yi Zhang
Na Ren
Deyu Tong
author_sort Can Li
collection DOAJ
description In order to safeguard image copyrights, zero-watermarking technology extracts robust features and generates watermarks without altering the original image. Traditional zero-watermarking methods rely on handcrafted feature descriptors to enhance their performance. With the advancement of deep learning, this paper introduces “ZWNet”, an end-to-end zero-watermarking scheme that obviates the necessity for specialized knowledge in image features and is exclusively composed of artificial neural networks. The architecture of ZWNet synergistically incorporates ConvNeXt and LK-PAN to augment the extraction of local features while accounting for the global context. A key aspect of ZWNet is its watermark block, as the network head part, which fulfills functions such as feature optimization, identifier output, encryption, and copyright fusion. The training strategy addresses the challenge of simultaneously enhancing robustness and discriminability by producing the same identifier for attacked images and distinct identifiers for different images. Experimental validation of ZWNet’s performance has been conducted, demonstrating its robustness with the normalized coefficient of the zero-watermark consistently exceeding 0.97 against rotation, noise, crop, and blur attacks. Regarding discriminability, the Hamming distance of the generated watermarks exceeds 88 for images with the same copyright but different content. Furthermore, the efficiency of watermark generation is affirmed, with an average processing time of 96 ms. These experimental results substantiate the superiority of the proposed scheme over existing zero-watermarking methods.
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spelling doaj.art-9b11d5e9b3f44869b82f8bbb0753f3f62024-01-10T14:52:08ZengMDPI AGApplied Sciences2076-34172024-01-0114143510.3390/app14010435ZWNet: A Deep-Learning-Powered Zero-Watermarking Scheme with High Robustness and Discriminability for ImagesCan Li0Hua Sun1Changhong Wang2Sheng Chen3Xi Liu4Yi Zhang5Na Ren6Deyu Tong7College of Information Engineering, Nanjing University of Finance and Economics, Nanjing 210023, ChinaHunan Engineering Research Center of Geographic Information Security and Application, Changsha 410007, ChinaHunan Engineering Research Center of Geographic Information Security and Application, Changsha 410007, ChinaHunan Engineering Research Center of Geographic Information Security and Application, Changsha 410007, ChinaHunan Engineering Research Center of Geographic Information Security and Application, Changsha 410007, ChinaHunan Engineering Research Center of Geographic Information Security and Application, Changsha 410007, ChinaJiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, ChinaCollege of Information Engineering, Nanjing University of Finance and Economics, Nanjing 210023, ChinaIn order to safeguard image copyrights, zero-watermarking technology extracts robust features and generates watermarks without altering the original image. Traditional zero-watermarking methods rely on handcrafted feature descriptors to enhance their performance. With the advancement of deep learning, this paper introduces “ZWNet”, an end-to-end zero-watermarking scheme that obviates the necessity for specialized knowledge in image features and is exclusively composed of artificial neural networks. The architecture of ZWNet synergistically incorporates ConvNeXt and LK-PAN to augment the extraction of local features while accounting for the global context. A key aspect of ZWNet is its watermark block, as the network head part, which fulfills functions such as feature optimization, identifier output, encryption, and copyright fusion. The training strategy addresses the challenge of simultaneously enhancing robustness and discriminability by producing the same identifier for attacked images and distinct identifiers for different images. Experimental validation of ZWNet’s performance has been conducted, demonstrating its robustness with the normalized coefficient of the zero-watermark consistently exceeding 0.97 against rotation, noise, crop, and blur attacks. Regarding discriminability, the Hamming distance of the generated watermarks exceeds 88 for images with the same copyright but different content. Furthermore, the efficiency of watermark generation is affirmed, with an average processing time of 96 ms. These experimental results substantiate the superiority of the proposed scheme over existing zero-watermarking methods.https://www.mdpi.com/2076-3417/14/1/435zero-watermarkingdeep learningrobustnessdiscriminabilityConvNeXtLK-PAN
spellingShingle Can Li
Hua Sun
Changhong Wang
Sheng Chen
Xi Liu
Yi Zhang
Na Ren
Deyu Tong
ZWNet: A Deep-Learning-Powered Zero-Watermarking Scheme with High Robustness and Discriminability for Images
Applied Sciences
zero-watermarking
deep learning
robustness
discriminability
ConvNeXt
LK-PAN
title ZWNet: A Deep-Learning-Powered Zero-Watermarking Scheme with High Robustness and Discriminability for Images
title_full ZWNet: A Deep-Learning-Powered Zero-Watermarking Scheme with High Robustness and Discriminability for Images
title_fullStr ZWNet: A Deep-Learning-Powered Zero-Watermarking Scheme with High Robustness and Discriminability for Images
title_full_unstemmed ZWNet: A Deep-Learning-Powered Zero-Watermarking Scheme with High Robustness and Discriminability for Images
title_short ZWNet: A Deep-Learning-Powered Zero-Watermarking Scheme with High Robustness and Discriminability for Images
title_sort zwnet a deep learning powered zero watermarking scheme with high robustness and discriminability for images
topic zero-watermarking
deep learning
robustness
discriminability
ConvNeXt
LK-PAN
url https://www.mdpi.com/2076-3417/14/1/435
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