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Anti-JPEG compression forged image detection method

An image detection and image technology, applied in image enhancement, image analysis, image data processing and other directions, can solve problems such as loss of performance, and achieve the effect of robust performance

Active Publication Date: 2021-08-13
INST OF AUTOMATION CHINESE ACAD OF SCI
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AI Technical Summary

Problems solved by technology

The current deepfake detection model will lose a lot of performance in the face of JPEG compression, so it is a very important issue to effectively resist the impact of JPEG compression during the detection process

Method used

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  • Anti-JPEG compression forged image detection method
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  • Anti-JPEG compression forged image detection method

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Experimental program
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Effect test

Embodiment

[0084] 1 Experimental setup

[0085] Diverse Fake Face Dataset (DFFD) and FaceForensics ++ (FF++) are used as the data sets for this experiment. The Diverse Fake Face Dataset dataset consists of multiple publicly available sub-datasets generated by open-source code. Real pictures and fake pictures with different resolutions and image quality are obtained through various ways. Faceforensics++ is a forensic dataset consisting of 1000 original video sequences, which contains five face forgery methods, namely: Deepfakes, Face2Face, FaceSwap, NeuralTextures and FaceShifter. These data are selected from Youtube videos. All videos have continuous and unoccluded faces, which can enable the generative model to successfully generate fake faces. At the same time, the face binary mask information is provided in the dataset, so the dataset can be used for classification or segmentation tasks.

[0086] These two data sets were selected as the experimental data and reclassified according ...

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Abstract

The invention provides an anti-JPEG compression forged image detection method, and the method comprises the following steps: intercepting a face region in an original image, deleting useless background information, and then adjusting the obtained face image to a fixed size to obtain a face image text; converting the face image text from an RGB color space component to a YCbCr color space component to obtain a YCbCr image text; segmenting the YCbCr image text into a series of 8 * 8 pixel blocks; carrying out the discrete cosine transform on component data of each color space channel of each 8 * 8 pixel block in the YCbCr image text, converting YCbCr color space components into 192 frequency channels, and converting the YCbCr image text into data of the 192 frequency channels after being subjected to DCT (discrete cosine transform); selecting low and medium frequency channel data from the data of the 192 frequency channels; and inputting the medium and low frequency channel data into a CNN network for image detection.

Description

technical field [0001] The invention relates to the field of image detection, in particular to a forged image detection method against JPEG compression. Background technique [0002] With the continuous development of forgery technology, the technology of forgery detection has also been improved rapidly. From the perspective of detection, it can be divided into five categories: detection based on physiological characteristics, detection based on motion patterns, detection based on pixel artifacts, detection based on frequency domain and detection based on GAN fingerprints. [0003] 1. Detection based on physiological characteristics [0004] The detection based on physiological characteristics mainly refers to starting from the perspective of human physiological information, because although the fake video is generated with high quality, it lacks human physiological information. In the early forged videos, there was a lack of data of human eyes closing. Based on this clue,...

Claims

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Application Information

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IPC IPC(8): G06K9/00G06N3/04G06N3/08G06T7/90
CPCG06N3/08G06T7/90G06T2207/30201G06T2207/20081G06T2207/20084G06T2207/10024G06V40/172G06V40/161G06N3/045
Inventor 董晶王伟彭勃王建文项伟樊红兴
Owner INST OF AUTOMATION CHINESE ACAD OF SCI
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