吉林大学学报(工学版) ›› 2021, Vol. 51 ›› Issue (5): 1838-1844.doi: 10.13229/j.cnki.jdxbgxb20210400

• 计算机科学与技术 • 上一篇    

基于注意力卷积神经网络的图像篡改定位算法

钟辉1(),康恒2,吕颖达3,李振建1,李红1,欧阳若川1   

  1. 1.吉林大学 大数据和网络管理中心，长春 130012
    2.深圳中兴网信科技有限公司，深圳 518000
    3.吉林大学 公共计算机教学与研究中心，长春 130012
  • 收稿日期:2021-05-06 出版日期:2021-09-01 发布日期:2021-09-16
  • 通讯作者: 吕颖达 E-mail:zhongh@jlu.edu.cn
  • 作者简介:钟辉（1979-），男，副研究员，博士.研究方向：通信与信息系统.E-mail：zhongh@jlu.edu.cn
  • 基金资助:
    吉林省省级产业创新专项项目(2017C031-4);赛尔网络下一代互联网技术创新项目(NGII20180104)

Image manipulation localization algorithm based on channel attention convolutional neural networks

Hui ZHONG1(),Heng KANG2,Ying-da LYU3,Zhen-jian LI1,Hong LI1,Ruo-chuan OUYANG1   

  1. 1.Management Center of Big Data and Network，Jilin University，Changchun 130012，China
    2.ZICT Technology Co. ，Ltd. ，Shenzhen 518000，China
    3.Center for Computer Fundamental Education，Jilin University，Changchun 130012，China
  • Received:2021-05-06 Online:2021-09-01 Published:2021-09-16
  • Contact: Ying-da LYU E-mail:zhongh@jlu.edu.cn

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摘要：

为防止对图像内容进行操作（如拼接），提出一种基于注意力卷积神经网络的图像篡改定位算法，称为CA-Net。尽管卷积神经网络强大的特征学习和映射能力可依次获取丰富的空间特征，但是本文提出使用不同采样步长的并行孔洞卷积层以提取多尺度特征。同时，为了更好地利用特征通道信息，在解码网中额外引入通道注意力模块。实验采用Synthesized图像库进行训练，在两组图像库上NC2016和CASIA进行微调和测试。实验结果表明：提出的并行孔洞卷积层和通道注意力模块能明显提高篡改定位结果，与一些最新主流算法相比，CA-Net在两个标准图像库上表现最优。

关键词: 通道注意力, 卷积神经网络, 图像篡改定位, 特征提取

Abstract:

To prevent manipulation of image content （such as splicing）， this paper proposes an image manipulation localization algorithm based on Channel Attention Convolutional Neural Network， and it is called CA-Net. Although the powerful feature learning and mapping capabilities of CNNs can sequentially acquire rich spatial features， this paper proposes to use parallel dilated convolutional layers with different sampling steps to extract multi-scale features. At the same time， in order to make better use of the characteristic channel information， we additionally introduce a channel attention module in the decoding network. This experiment uses Synthesized image dataset for training， and fine-tunes and tests NC2016 and CASIA on the two image libraries. Experimental results show that the proposed parallel dilated convolutional layer and channel attention module can significantly improve the results. Compared with some of the state-of-the-art algorithms， CA-Net performs best on the two standard image datasets.

Key words: channel attention, convolutional neural networks, image manipulation localization, feature extraction

中图分类号: 

  • TP391

图1

CA-Net的体系结构"

图2

带有残差连接的通道注意力结构"

表1

图像库中训练和测试图像的数量"

SynthesizedNC2016CASIA
训练集65 0004045123 （CASIA v2.0）
测试集-160921 （CASIA v1.0）

表2

孔洞卷积层的选择"

孔洞卷积层准确率/%

采样步长｛1，3，5，7｝

采样步长｛2，4，6，8｝

常规卷积层

94.32
93.22
92.13

表3

通道注意力模块的选择"

通道注意力模块准确率/%
CA_090.15
CA_192.76
CA_293.17
CA_3（本文算法）94.32

表4

像素级F1分数实验结果对比"

算法F1
NC2016CASIA v1.0
Error Level Analysis0.2360.214
Noise Inconsistencies0.2850.263
CFA0.1740.207
LSTM-EnDec-0.391
RGB-N0.7220.408
CA_3（本文算法）0.7950.425

表5

像素级AUC分数实验结果对比"

算法AUC/%
NC2016CASIA v1.0
Error Level Analysis42.961.3
Noise Inconsistencies48.761.2
CFA50.152.2
J-Conv-LSTM-Conv76.4-
LSTM-EnDec79.376.2
ManTra-Net79.581.7
CA_3（本文算法）83.181.9

图3

NC2016和CASIA v1.0图像篡改定位可视化结果"

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