Image tampering detection method, electronic equipment and storage medium

A tamper detection and image technology, applied in the field of image processing, can solve the problems of high time complexity, slow operation efficiency, unfavorable positioning of key points and more accurate copy and paste areas, etc., to achieve good robustness, improve operation speed, and accuracy The effect of positioning

Active Publication Date: 2020-10-13
SUZHOU KEDA TECH
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Problems solved by technology

[0004] In the traditional technology, the detection algorithm based on block matching usually has high time complexity and slow running efficiency; whi

Method used

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  • Image tampering detection method, electronic equipment and storage medium
  • Image tampering detection method, electronic equipment and storage medium
  • Image tampering detection method, electronic equipment and storage medium

Examples

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Embodiment Construction

[0089] Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete and fully convey the concept of example embodiments to those skilled in the art. The described features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

[0090] Furthermore, the drawings are merely schematic illustrations of the invention and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and thus repeated descriptions thereof will be omitted. Some of the block diagrams shown in the drawings are functional entities and do not necessarily correspond to physically or logically separate entities. These functional entities may be impleme...

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Abstract

The invention provides an image tampering detection method, electronic equipment and a storage medium. The method comprises the steps of extracting feature points and feature vectors from a to-be-detected image; matching the feature points to obtain a matching point pair set; using a hierarchical clustering algorithm to perform condensation hierarchical clustering on the matching points in the matching point pair set to obtain a clustering tree diagram; obtaining different class clusters by utilizing different clustering numbers; utilizing an elbow rule to obtain an optimal class cluster set;selecting two class clusters from the optimal class cluster set in sequence, and executing the following steps on the two class clusters: judging whether the number of matching point pairs between thetwo class clusters is greater than a preset threshold value or not; if so, selecting a matching point pair from the two class clusters; calculating an affine transformation matrix according to the matching point pairs; searching matching point pairs by utilizing the affine transformation matrix; and determining a copying and pasting area according to the matching point pair. According to the method and the equipment provided by the invention, the algorithm complexity is reduced, the algorithm operation efficiency is improved, and the copying and pasting area is positioned more intelligently and accurately.

Description

technical field [0001] The invention relates to the field of image processing, in particular to an image tampering detection method, electronic equipment, and a storage medium. Background technique [0002] With the popularity of image editing software, people can easily tamper with image content without leaving obvious traces. When these falsified images appear in important occasions such as courts, news reports, and academic journals, it will cause serious consequences. Therefore, the research on image tampering detection technology is of great significance. Among the many image manipulation methods, copying and pasting is the most common one. It copies and pastes a certain area of ​​an image to another area of ​​the same image to cover up objects or people. [0003] Blind detection technology can not rely on the pre-embedded information in the image, such as watermark, etc., but only authenticate the authenticity of the image according to the content of the image itself...

Claims

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Application Information

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IPC IPC(8): G06K9/62G06K9/46
CPCG06V10/757G06V10/44G06V10/462G06F18/2321G06F18/22
Inventor 童军晋兆龙邹文艺
Owner SUZHOU KEDA TECH
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