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Image re-compression detection method suitable for rail transit

A technology of rail transit and detection method, applied in the field of image processing, to achieve the effect of short time required, improved versatility, and improved detection accuracy

Active Publication Date: 2022-04-08
南京麦卡锡智能科技有限公司
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Problems solved by technology

[0005] Purpose of the invention: the purpose of the present invention is to solve the deficiencies in the prior art, to provide a general image re-compression detection method suitable for rail transit, for the JPEG re-compression problem in the existing rail transit image detection technology, through Artificially modify the quantization table in the JPEG header file, intervene in the decompression process of the JPEG image, reduce the generation of truncation errors, and improve the effectiveness of feature extraction, thereby improving the accuracy of the JPEG re-compression detection method, which is beneficial to smart gates in rail transit Machine rapid identification and detection

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  • Image re-compression detection method suitable for rail transit
  • Image re-compression detection method suitable for rail transit
  • Image re-compression detection method suitable for rail transit

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[0033] The technical solutions of the present invention will be described in detail below, but the protection scope of the present invention is not limited to the embodiments.

[0034] An image re-compression detection method suitable for rail transit of the present invention aims at the problem of re-compression of JPEG images, by artificially modifying the quantization table in the JPEG header file, intervening in the decompression process of JPEG images, and reducing the occurrence of truncation errors , to improve the effectiveness of feature extraction, thereby improving the accuracy of the JPEG recompression detection method.

[0035] Such as figure 1 As shown, the image recompression detection method suitable for rail transit in this embodiment includes the following steps: modification of header file quantization table, JPEG image decompression, feature extraction, detector training, and result analysis. The specific image re-compression detection method includes the ...

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Abstract

The invention discloses an image re-compression detection method suitable for rail transit, which includes modification of header file quantization table, JPEG image decompression, feature extraction, detector training and result analysis. Aiming at the problem of JPEG heavy compression in the existing rail transit image detection technology, the present invention intervenes in the JPEG image decompression process by artificially modifying the quantization table in the JPEG header file, reduces the occurrence of truncation errors, and designs corresponding post-processing The neural network improves the effectiveness of feature extraction, thereby improving the accuracy of the JPEG re-compression detection method, which is conducive to the rapid identification and detection of intelligent gates in rail transit.

Description

technical field [0001] The invention belongs to image processing technology, in particular to an image re-compression detection method suitable for rail transit. (Rail transit artificial intelligence security gate system) Background technique [0002] With the development of computer and network technology, the cost of image tampering has been greatly reduced. More and more digital images appear in daily life, leading to a decline in the credibility of digital images, so digital image forensics technology has attracted the attention of governments and law enforcement agencies. Currently, JPEG compression is a popular compression standard, and thus, forensic issues related to the JPEG format receive more attention. If part of the source image is moved into the destination JPEG image, it may cause JPEG recompression when saving again. There are already some methods for detecting JPEG recompression, and most JPEG forensics problems involve images saved in JPEG format. [00...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N17/00G06N3/04G06N3/08
CPCH04N17/004G06N3/08G06N3/045
Inventor 邹常付赵东见万春芳金钰吉小鹏
Owner 南京麦卡锡智能科技有限公司
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