Confidential Image Super-Resolution with Privacy Protection

IF 1.6 4区 计算机科学 Q3 ENGINEERING, ELECTRICAL & ELECTRONIC
Yiran Han;Jianwei Liu;Xin Deng;Junpeng Jing;Yanting Zhang
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引用次数: 0

Abstract

Nowadays, people are getting used to upload images to a third party for post-processing, such as image denoising and super-resolution. This may easily lead to the disclosure of the privacy in the confidential images. One possible solution is to encrypt the image before sending it to the third party, the encrypted image can be easily detected by a malicious attacker in the transmission channel. We propose a confidential image super-resolution method named HSR-Net which firstly hide the secret image and then super-resolve it in the hidden domain. The method is composed of three important modules: image hiding module (IHM), image super-resolution module (ISM), and image revealing module (IRM). The IHM aims to encode secret image and hide it into a cover image to generate the stego image. The stego image looks similar to the cover image but contains the information of the secret image. The third party uses the ISM to perform image super-resolution on the stego image. The user can reveal the super-resolved secret image from the stego image. The proposed HSR-Net method has two advantages. It ensures that the third party cannot directly operate on the secret image, thus protecting the user's privacy. Due to the similarity between the stego image and cover image, we can reduce the attacker's suspicion to further improve the image security. The experimental results were tested on DIV2K dataset and Flickr2K dataset. The peak signal-to-noise ratios (PSNR) of IHM, ISM, and IRM are 38.81 dB, 28.91 dB, and 23.51 dB, respectively, which verify that the proposed HSR-Net method is able to achieve image super-resolution and protect user's privacy simultaneouly.
具有隐私保护功能的机密图像超级分辨率
如今,人们越来越习惯于将图像上传到第三方进行后期处理,如图像去噪和超分辨率。这很容易导致机密图像的隐私泄露。一种可行的解决方案是在将图像发送给第三方之前对其进行加密,但加密后的图像很容易被传输通道中的恶意攻击者检测到。我们提出了一种名为 HSR-Net 的机密图像超分辨率方法,它首先隐藏机密图像,然后在隐域中对其进行超分辨率处理。该方法由三个重要模块组成:图像隐藏模块(IHM)、图像超分辨率模块(ISM)和图像揭示模块(IRM)。图像隐藏模块(IHM)旨在对秘密图像进行编码,并将其隐藏到覆盖图像中,从而生成偷窃图像。伪图像看起来与封面图像相似,但包含了秘密图像的信息。第三方使用 ISM 对伪图像进行图像超分辨率处理。用户可以从伪图像中发现超分辨率的秘密图像。拟议的 HSR-Net 方法有两个优点。它确保第三方无法直接对秘密图像进行操作,从而保护了用户的隐私。由于偷窃图像和封面图像之间的相似性,我们可以减少攻击者的怀疑,从而进一步提高图像的安全性。实验结果在 DIV2K 数据集和 Flickr2K 数据集上进行了测试。IHM、ISM和IRM的峰值信噪比(PSNR)分别为38.81 dB、28.91 dB和23.51 dB,验证了所提出的HSR-Net方法能够同时实现图像超分辨率和保护用户隐私。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Chinese Journal of Electronics
Chinese Journal of Electronics 工程技术-工程:电子与电气
CiteScore
3.70
自引率
16.70%
发文量
342
审稿时长
12.0 months
期刊介绍: CJE focuses on the emerging fields of electronics, publishing innovative and transformative research papers. Most of the papers published in CJE are from universities and research institutes, presenting their innovative research results. Both theoretical and practical contributions are encouraged, and original research papers reporting novel solutions to the hot topics in electronics are strongly recommended.
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