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A method for realizing hidden video digital watermarking

A digital watermarking and concealment technology, applied in image watermarking, image data processing, image data processing, etc., can solve problems affecting video viewing, etc., and achieve the effect of small amount of calculation and not easy to be cracked

Pending Publication Date: 2019-03-08
央视国际网络无锡有限公司
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  • Abstract
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for realizing hidden video digital watermarking, which solves the technical problem that the station logo information directly added to the video will affect the viewing of the video

Method used

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  • A method for realizing hidden video digital watermarking
  • A method for realizing hidden video digital watermarking
  • A method for realizing hidden video digital watermarking

Examples

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Embodiment Construction

[0048] Such as Figure 2-Figure 11 A method for realizing a hidden video digital watermark is shown, comprising the following steps:

[0049] Step 1: The central server obtains the source video file in the recording device, sets the random number seed, and the central server selects a group of pictures in each frame of the source video file according to the random number seed as the carrier picture group, and sets the carrier All pictures in the picture group are carrier pictures;

[0050] Such as figure 2 As shown, the carrier image resolution used in this embodiment is 1920x1080;

[0051] The central server decomposes the color format of all carrier pictures in the carrier picture group: according to the YUV color format, the color image of the original picture is decomposed into a Y component representing brightness information and a U component and a V component representing chroma information;

[0052] Display the Y component, U component and V component respectively ...

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Abstract

The invention discloses a method for realizing hidden video digital watermarking, which comprises the following steps of firstly carrying out wavelet decomposition on an image to obtain sub-images with different spaces and frequencies, and then processing wavelet coefficients of the image; after the image is decomposed, preprocessing the watermark, embedding the processed watermark into a selectedwavelet coefficient through a certain algorithm; and finally performing wavelet inverse transformation on the wavelet coefficient containing the watermark to obtain a digital image containing the watermark. The check and extraction process is just inverse transformation of the process, and the technical problem that the station caption information directly added into the video affects video watching is solved. The hidden watermark station caption information is added into the video, so that the added watermark is difficult to perceive by naked eyes, the video cannot be shielded at all, and the video watching cannot be affected. According to the technical scheme, the embedded watermark is easy to extract, the extracted calculation amount is small, the encryption is carried out by adoptingthe triple secret key, and the common attack means can be resisted.

Description

technical field [0001] The invention belongs to the field of image and video information processing, in particular to a method for realizing hidden video digital watermarking. Background technique [0002] At present, in order to protect their own rights and interests, producers of video and audio materials usually mark the copyright by adding logo information in the video. For example figure 1 As shown, the logo of "Hubei Satellite TV" was added to the upper left corner of the video to identify that the video was produced by Hubei Satellite TV. [0003] The advantage of this method is that the technical implementation is simple and easy to operate, as long as the station logo image is superimposed on the original video frame, and then re-encoded with a video encoder. But its disadvantage is also very obvious, that is, the added logo actually reduces the viewability of the video. Contents of the invention [0004] The purpose of the present invention is to provide a met...

Claims

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Application Information

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IPC IPC(8): G06T1/00
CPCG06T1/0028G06T1/005G06T1/0085
Inventor 张勇朱立松
Owner 央视国际网络无锡有限公司
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