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Video privacy protection method based on expression fusion

A privacy protection and facial expression technology, which is applied in the direction of TV, color TV, color TV parts, etc., can solve the problems of face image expression changes, etc., to achieve the effect of protecting private information and protecting expressions

Inactive Publication Date: 2017-01-04
XIDIAN UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to provide a video privacy protection method based on facial expression fusion, aiming to solve the problem that the traditional method of directly merging human faces can ensure that important information is not leaked, but in the process of fusion, the original face image The problem that the expression will change

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  • Video privacy protection method based on expression fusion
  • Video privacy protection method based on expression fusion

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Embodiment 1

[0052] Refer to attached figure 2 , the concrete steps of the embodiment of the present invention are as follows:

[0053] 1. Facial expression recognition process

[0054] Step 1, the establishment of expression library:

[0055] The JAFFE Japanese adult female facial expression database containing 213 images of 7 different expressions of 10 women was used for expression recognition. There are 2 to 4 images for each expression, all of which are 256×256 8-bit grayscale images.

[0056] Step 2, image acquisition:

[0057] Obtain a continuous sequence of still images from a camera or other device during live video.

[0058] Step 3, image preprocessing:

[0059] Subsampling and grayscale equalization are performed on face images. Through sub-sampling, irrelevant areas in the image are removed, and only facial areas that can reflect expression changes such as eyes, mouth corners, and eyebrows are retained. Then, the histogram equalization process is performed on the image. Af...

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Abstract

The invention discloses a video privacy protection method based on expression fusion. The method comprises the steps of detecting a human face in real time in video live broadcast and recognizing a facial expression; and fusing with a face image with the same expression in an expression library, which performs privacy protection on the human face, and guarantees that the facial expression does not change. According to the video privacy protection method based on the expression fusion provided by the invention, under the condition of guaranteeing that the expression is invariable, by fusing with the human face image with the same expression in the expression library, the privacy information of the human face can be protected and an original expression of the human face can be remained, so that the integrity of original human face information is improved on the premise of privacy protection. Different from a previous method of directly fusing the whole human face, the video privacy protection method based on the expression fusion provided by the invention fuses the expressions in the human face though the expression library, so that information can be protected under the condition that the human face expression is invariable.

Description

technical field [0001] The invention belongs to the technical field of video privacy protection, and in particular relates to a video privacy protection method based on expression fusion. Background technique [0002] In recent years, with the rapid development of the Internet and the increasing popularity of various video applications, video personal privacy protection has received widespread attention. Not disclosing private information while ensuring video applications is a hot topic in current research. Due to its high academic value and huge application potential, video privacy protection technology has attracted the attention of scholars. The traditional method of directly merging the entire face uses the image fusion method on the face image to combine the face image with Another face image that does not contain important information is fused, so that the face image that needs to be protected is gradually converted into another image, thereby protecting the important...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/232G06K9/00G06F17/30
CPCG06F16/583G06V40/174G06V20/46H04N23/611H04N23/6845
Inventor 王祥熊琛裴庆祺
Owner XIDIAN UNIV
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