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Watermark removing algorithm based on inter-frame prediction

An inter-frame prediction and watermarking technology, which is applied in the field of video processing, can solve the problems of dissonance, poor visual effect, etc., and achieve the effect of ensuring comfort and good watermark removal effect

Inactive Publication Date: 2019-09-24
北京云摄美网络科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current watermark removal method mainly adopts the method of pixel blurring or reverse color watermark filling to remove the watermark, the visual effect is poor, and it has a sense of violation

Method used

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  • Watermark removing algorithm based on inter-frame prediction

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Embodiment Construction

[0019] The present invention will be further described in detail below with reference to the accompanying drawings, so that those skilled in the art can implement it with reference to the text of the description.

[0020] It should be understood that terms such as "having", "including" and "including" used herein do not equate the presence or addition of one or more other elements or combinations thereof.

[0021] It should be noted that the experimental methods described in the following embodiments are conventional methods unless otherwise specified, and the reagents and materials, unless otherwise specified, can be obtained from commercial sources.

[0022] Usually the area covered by the watermark of the video is relatively fixed. With the playback of one frame of image, the pixels under the area covered by the watermark actually shift. To achieve the effect of removing the watermark, it is necessary to continuously display the prediction in the area covered by the watermark of th...

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Abstract

The invention discloses a watermark removing algorithm based on inter-frame prediction. The method comprises the following steps of identifying a static reference object of a target frame image in a video through a target detection algorithm, reading a certain number of front and rear frame images of the target frame image, screening an effective frame image capable of identifying the static reference object, and calculating a motion track of the static reference object corresponding to a time axis; inputting a rectangular area with a watermark manually; predicting the motion tracks of all pixels of the rectangular area with the watermark, if a certain pixel is not predicted in the effective frame image, taking the average value of the pixel values around the pixel as a predicted value of the pixel, otherwise, taking the average value of the pixel values of the pixel predicted in the effective frame image of the pixel as a predicted value of the pixel; and obtaining the predicted values of all pixels of the rectangular area with the watermark of each frame of image, and displaying the predicted values along with a video time axis. According to the invention, a predicted video motion mode is adopted, and the data of front and rear frames is adopted for filling to ensure that the data is close to the previous pixels as much as possible.

Description

Technical field [0001] The invention relates to the technical field of video processing. Specifically, the present invention relates to a watermarking algorithm based on inter-frame prediction. More specifically, the present invention relates to a method for quickly identifying static reference objects and filling the watermark area by predicting the motion pattern of the picture. Background technique [0002] In the era of rapid development of multimedia technology, a large number of video files are produced. In some video files, producers often mark these videos with watermarks for advertising purposes or for protecting the copyright of the videos and tracking infringements. However, these watermarked videos often degrade the viewer's viewing experience. In addition, for video communicators, they do not want to disseminate the video while disseminating other people's watermarks as part of the video content. Therefore, a technology to remove video watermark has been produced i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/467
CPCH04N19/467
Inventor 张楠
Owner 北京云摄美网络科技有限公司
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