Video watermark adding and extracting method, device, equipment and storage medium

A watermark adding and watermarking technology, which is applied in the field of video editing, can solve the problems of difficult watermark extraction and poor robustness, and achieve the effect of improving robustness and high robustness

Active Publication Date: 2022-04-15
TENCENT TECH (SHENZHEN) CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] However, the robustness of this method is poor. When attacked by compression, re-encoding, etc., the watermark is difficult to extract effectively.

Method used

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  • Video watermark adding and extracting method, device, equipment and storage medium
  • Video watermark adding and extracting method, device, equipment and storage medium
  • Video watermark adding and extracting method, device, equipment and storage medium

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Embodiment Construction

[0056] In order to make the purpose, technical solution and advantages of the present application clearer, the implementation manners of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0057] First, the nouns involved in the embodiments of the present application are briefly introduced:

[0058] Digital watermarking: refers to embedding specific information into digital signals, which may be audio, pictures, or videos. If a signal with a digital watermark is copied, the embedded information will also be copied. Digital watermarks can be divided into two types: floating and hidden. The former is a visible watermarking (visible watermarking), and the information contained in it can be seen while watching pictures or videos. In general, floating watermarks usually contain the name or logo of the copyright owner. Hidden watermark adds watermark by changing part of the data in the digital signal, and this kind of ...

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Abstract

The present application discloses a video watermark adding and extracting method, device, equipment and storage medium, and the method is applied in the field of video editing. The method includes: acquiring a target image frame in the video data; performing time-frequency conversion on the target image frame to obtain target frequency domain data, the target frequency domain data including a matrix composed of frequency domain coefficients; modifying the target image frame according to the watermark data The frequency domain coefficient in the target frequency domain data is obtained to obtain the watermark frequency domain data; the time-frequency inverse conversion is performed on the watermark frequency domain data to obtain the watermark image frame; the watermark video data is synthesized according to the watermark image frame. This method can improve the robustness of watermarking.

Description

technical field [0001] The present application relates to the field of video editing, in particular to a video watermark adding and extracting method, device, equipment and storage medium. Background technique [0002] Digital watermarking technology refers to embedding specific information into a digital signal. The digital signal may be audio, picture or video, etc. If you want to copy a signal with a digital watermark, the embedded information will also be copied. Digital watermarks can be divided into two types: floating and hidden. The floating type is a visible watermark, and the hidden type is an invisible watermark. [0003] In the related art, there is provided a method for adding a hidden digital watermark: a minimum bit watermark in the space domain. The spatial minimum bit watermarking method adds watermark data by modifying the minimum bit value of the image pixel value (binary), so that the watermark data can be embedded into the image data. Because this meth...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N21/8358H04N21/44
CPCH04N21/8358H04N21/44G06T1/0085G06T1/0057G06T2201/0052H04N19/467H04N19/60H04N19/18G06T7/90G06V10/431G06V20/46G06T1/0021G06T9/00G06T2207/10016G06T2207/10024G06T2207/20081G06T2207/20132
Inventor 马华冠陈朝虹赵洁崔晓东王立福黄维刘译聪李辛潘晓霞
Owner TENCENT TECH (SHENZHEN) CO LTD
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