Image smoothing detection method and device

A technology of image smoothing and detection methods, applied in image analysis, image enhancement, image data processing, etc., can solve problems such as image smoothing and effective detection, and achieve the effect of improving effectiveness and accuracy

Active Publication Date: 2022-06-21
SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a detection method and device for image smoothing, aiming to solve the problem that the prior art cannot effectively detect image smoothing

Method used

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  • Image smoothing detection method and device
  • Image smoothing detection method and device

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Embodiment 1

[0025] figure 1 The implementation process of the image smoothing detection method provided by the first embodiment of the present invention is shown. For the convenience of description, only the part related to the embodiment of the present invention is shown, and the details are as follows:

[0026] In step S110, edge detection is performed on the image to determine edge points.

[0027] The embodiments of the present invention are applicable to electronic devices such as smart phones and computers, where processors are set in these electronic devices to perform smoothing detection on images.

[0028] In the smoothed image, the low-frequency region has basically no change after smoothing, which requires us to focus on the edge of the image containing high-frequency information, and determine the edge by performing edge detection on the smoothed image. point.

[0029] Preferably, edge detection is performed on the image by using the canny operator. Since the canny operator...

Embodiment 2

[0053] image 3 The structure of the image smoothing detection apparatus provided by the second embodiment of the present invention is shown. For the convenience of description, only the parts related to the embodiment of the present invention are shown, including:

[0054] an edge detection module 110, configured to perform edge detection on the image to determine edge points;

[0055] A feature matrix establishment module 120, for extracting the pixels of edge points, and establishing a feature matrix;

[0056] A derivation module 130, used for derivation of the characteristic matrix to obtain a characteristic derivative matrix;

[0057] The algorithm identification module 140 is used for classifying and identifying the characteristic derivative matrix through a classification algorithm, and determining the smoothing algorithm adopted for the image.

[0058] Preferably, the feature matrix establishment module 120 includes:

[0059] The edge line establishing unit 121 is u...

Embodiment 3

[0067] Figure 4 The structure of the image smoothing detection device provided by the third embodiment of the present invention is shown. For the convenience of description, only the part related to the embodiment of the present invention is shown. Except for the modules described in the second embodiment, this embodiment The provided image smoothing detection device further includes:

[0068] The histogram establishment module 210 is configured to establish a histogram according to the elements of the characteristic derivative matrix.

[0069] The normalization module 220 is used for normalizing the histogram.

[0070] Optionally, the image smoothing detection apparatus provided in this embodiment further includes a quantization module, and the quantization module is specifically applied to quantize the feature matrix in a preset manner.

[0071] In this embodiment of the present invention, each module of the image smoothing detection device may be implemented by correspon...

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Abstract

The present invention is applicable to the technical field of image processing, and provides an image smoothing detection method and device. The method includes: performing edge detection on an image, determining edge points, extracting pixels of the edge points, and establishing a feature matrix, and calculating the Deriving the feature matrix to obtain the feature derivative matrix, classifying and identifying the feature derivative matrix through a classification algorithm, determining the smoothing algorithm used for the image, realizing effective detection of image smoothing, and improving image smoothing The accuracy of automated detection further improves the effectiveness of image forensics.

Description

technical field [0001] The invention belongs to the technical field of electronic equipment, and particularly relates to a detection method and device for image smoothing. Background technique [0002] As a technical means to ensure the security and integrity of images, image forensics technology has received extensive attention in recent years under the background of the popularization of the Internet and big data applications. [0003] Common image forensics research covers equipment forensics, tampering forensics, coding compression forensics, image editing history evaluation and so on. The reliability of an image often needs to be verified through a series of forensic operations. During this process, the imaging and editing history of the image needs to be fully evaluated, and any potentially applicable image manipulation needs to be detected for this purpose. At present, there are many detection methods for various image editing methods, including detection of image j...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06T7/13G06T5/00
CPCG06T7/13G06T5/002G06T2207/10004
Inventor 丁峰杨建权刘毅肖钟凯朱国普
Owner SHENZHEN INST OF ADVANCED TECH CHINESE ACAD OF SCI
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