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Video watermark generating method, device and terminal

A video watermarking and watermarking technology, which is applied in the field of video processing to achieve the effects of being difficult to find, strong in concealment, and strong against malicious identification.

Active Publication Date: 2018-04-13
BEIJING DAJIA INTERNET INFORMATION TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Embodiments of the present invention provide a video watermark generation method, device, and terminal to solve the problem that existing video watermark generation schemes are easily identified and replaced by criminals maliciously

Method used

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  • Video watermark generating method, device and terminal
  • Video watermark generating method, device and terminal
  • Video watermark generating method, device and terminal

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] refer to figure 1 , shows a flow chart of steps of a method for generating a video watermark according to Embodiment 1 of the present invention.

[0031] The video watermark generation method of the embodiment of the present invention may comprise the following steps:

[0032] Step 101: Determine the spatial watermark and temporal value corresponding to each frame of video image in the video file according to the preset spatial watermark template and temporal watermark template.

[0033] In an embodiment of the present invention, a video file includes multiple frames of video images, and a watermark is embedded in each frame of video images in the video file through the method provided by the embodiment of the present invention.

[0034] Among them, the spatial watermark is scaled by the preset spatial watermark template to obtain the same resolution or the spatial watermark template itself has the same resolution as the video file, and the temporal value can be determ...

Embodiment 2

[0048] refer to figure 2 , shows a flowchart of steps of a method for generating a video watermark according to Embodiment 2 of the present invention.

[0049] The method for generating a video watermark in the embodiment of the present invention may specifically include the following steps:

[0050] Step 201: Obtain a preset airspace watermark template.

[0051] The spatial watermark template can be composed of pixels whose pixel values ​​are the first preset value and the second preset value, each pixel corresponds to a pixel value, each pixel value corresponds to a spatial value, and each pixel value in the spatial watermark template The numbers are equal to ensure that the spatial watermark template is at a local low frequency and a global high frequency. That is to say, if a small block of spatial watermark template is randomly intercepted, the pixel values ​​in the block are the same, but there are many changes overall.

[0052] The numbers of the first preset value ...

Embodiment 3

[0083] refer to image 3 , shows a structural block diagram of a device for generating a video watermark according to Embodiment 3 of the present invention.

[0084] The video watermark generation device in the embodiment of the present invention may include: a watermark determination module 301 configured to determine the corresponding spatial watermark and time domain value of each frame of video image in the video file according to the preset spatial domain watermark template and temporal domain watermark template, The number of each pixel value in the spatial watermark is equal; the edge processing module 302 is configured to determine the edge distribution of each frame of video image in the video file; the embedding module 303 is configured to The corresponding spatial watermark and time domain value and the edge distribution of each frame of video image in the video file generate a watermark for the video file.

[0085] Preferably, the embedding module 303 may include:...

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Abstract

The embodiments of the present invention provide a video watermark generating method, a video watermark generating device and a terminal. The method includes the following steps that: spatial-domain watermarks and time-domain values corresponding to each frame of video image in a video file are determined according to a preset spatial-domain watermark template and a time-domain watermark template,wherein each spatial-domain watermark has the same number of pixel values; the edge distribution of each frame of video image in the video file is determined; and a watermark is generated for the video file according to the spatial-domain watermarks and time-domain values corresponding to each frame of video image, as well as the edge distribution of each frame of video image. The watermark generated by using the video watermark generating method and video watermark generating device provided by the embodiments of the present invention has high concealment performance and is unlikely to be found by malicious people.

Description

technical field [0001] The present invention relates to the technical field of video processing, in particular to a method, device and terminal for generating a video watermark. Background technique [0002] Currently, in order to protect video copyright, video playback platforms usually embed video watermarks in videos uploaded by users. Video watermarking can be divided into two categories: spatial domain watermarking and transform domain watermarking. The earlier video watermarking algorithms are essentially in the space domain, and the watermark information to be concealed is embedded in it by changing the gray level of some pixels. The spatial domain method has the advantages of simple algorithm, fast speed, and easy implementation, and it can restore the carrier image and watermark information almost losslessly, so the spatial domain watermark is widely used. [0003] Specifically, the methods for implementing spatial domain watermarking can be subdivided into the fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/913H04N21/8358
CPCH04N5/913H04N21/8358H04N2005/91335G06T1/0028G06T1/005G06T1/0085G06T2201/0051
Inventor 不公告发明人
Owner BEIJING DAJIA INTERNET INFORMATION TECH CO LTD