Video watermark embedding and extraction method capable of extracting watermark after reshooting
A technology of video watermarking and watermarking, which is applied in the fields of digital video signal modification, electrical components, image communication, etc., can solve the problems that cannot be used in application scenarios and cannot be extracted, and achieves the effect of taking into account the look and feel of the picture.
Active Publication Date: 2018-10-02
UNIV OF ELECTRONICS SCI & TECH OF CHINA
View PDF8 Cites 1 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] When these embedding methods are used in the remake scene, the watermark cannot be extracted, so they cannot be used to deal with the application scenario of extracting the watermark after the remake
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0065] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0066] This embodiment provides a video watermark embedding method that can extract the watermark after the remake, the flow chart of which is as follows figure 1 shown, including the following steps:
[0067] Step 1. Read the original video file and adjust the watermark according to the read original video information;
[0068] Step 1-1. The user inputs characters or character strings as the original watermark image information;
[0069] Step 1-2. Convert each character into a single binary image information;
[0070] Step 1-3. Expand the watermark image information to the original video size, place the watermark information in the upper left corner, and set the blank part to 0;
[0071] Step 1-4. Place a watermark image symmetrical to the watermark center in the upper left corner in the lower right corner, so that the entire watermark image informa...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The invention discloses a video watermark embedding and extraction method capable of extracting a watermark after reshooting, and belongs to the video digital watermark technical field. The embeddingmethod comprises the following steps: reading an original video file, and adjusting the watermark according to read original video information; randomly sampling the original video, and determining anembedding threshold; reading frame image information of the original video frame-by-frame, and determining whether the frame needs to embed a watermark or not; embedding the watermark; synthesizing all frames in a synthesizing sequence into a new video according to an original video frame rate, i.e., the video containing the watermark. The extraction method comprises the following steps: determining a video valid zone; determining an extraction channel; extracting watermark from single frame; synthesizing all frames in a synthesizing sequence into a new video according to an original video frame rate, i.e., the extraction result. The method can extract clearer watermark after reshooting, considers frame impression, and extracts the watermark without using the original video; the method belongs to a blind watermarking method.
Description
technical field [0001] The invention belongs to the technical field of video digital watermarking, and in particular relates to a method for embedding and extracting video digital watermarks which can still realize watermark extraction after a remake. Background technique [0002] Video is now an important carrier of information transmission, one of the most effective ways of information dissemination, and an important asset for video owners. Resource pirates have many ways to illegally misappropriate video resources, one of which is remake, such as movie remake. Pirates use high-quality cameras to remake and illegally sell and make profits, which greatly damages the interests of video owners. Blind watermark technology can effectively prevent theft of video resources. At present, the methods of blind watermark embedding mainly include: [0003] The application number is CN200710068644.4, and the title of the invention is: video watermarking method based on visual features...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): H04N19/467H04N19/625
CPCH04N19/467H04N19/625
Inventor 范明钰肖鸣宇王光卫刘佳雨刘文祺赵志伟许烨楠柯宇蔡政许业锁王继鹏熊洋李林杨竞
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA