Video digital watermark information embedding method and detection method
A technology of digital watermarking and information embedding, which is applied in digital video signal modification, image watermarking, image communication, etc. It can solve the problems of sensory imperceptibility and watermark invisible, so as to improve invisibility and robustness, and resist piracy attacks , the effect of improving efficiency
Active Publication Date: 2018-04-13
SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV
View PDF7 Cites 18 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
The digital watermark information with copyright information can be a digital sequence or image, and the watermark (digital sequence or image with copyright information) is embedded into these multimedia carriers through some algorithms. It can be embedded in any part of the multimedia carrier, but it must be Minimize the impact on the carrier, so that the carrier after embedding the watermark has good watermark invisibility, and the human senses cannot perceive it
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
[0024] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0025] Explanation: The image dimensions / sizes involved in the present invention are all measured in pixels, not in units of length (such as cm, mm, etc.).
[0026] A specific embodiment of the present invention provides a video digital watermark information embedding method for copyright owners to embed some specific watermark information into their multimedia content, especially video, for copyright management. refer to figure 1 , the embedding method includes steps S1 to S6:
[0027] Step S1, select the original video frame image from the original video that needs to be embedded with digital watermark information, and select one of the channel images from the RGB three-channel image of the original video frame image to perform discrete Fourier transform to obtain the original The magnitude spectrum image and phase spectrum image of the vid...
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 digital watermark information embedding method and a detection method. The embedding method comprises the steps that an original video frame image to be watermark-embedded is selected, and discrete Fourier transform is carried out on a channel image to acquire the amplitude spectrum and phase spectrum images thereof; the corresponding pixel value of the amplitude spectrum image or the phase spectrum image is modified according to the pixel value of a watermark information binary image to carry out watermark embedding; inverse discrete Fourier transform is carried out on the amplitude spectrum image or the phase spectrum image after image pixel value modifying to acquire a watermarked image, and then the watermarked image is merged with other two channel images to acquire a watermarked video frame image; and the original video frame image in an original video is replaced by the watermarked video frame image to acquire a watermarked video. The detection method comprises the steps that the watermarked video frame and the previous frame of image in the video are selected for discrete Fourier transform to acquire the corresponding amplitude spectrum imageand phase spectrum image; and two amplitude spectrum images or two phase spectrum images are subtracted to acquire a watermark information image.
Description
technical field [0001] The invention relates to the field of copyright management of digital media content, in particular to a method for realizing the hiding of robust video digital watermark information based on Fourier transform and a corresponding watermark detection method. Background technique [0002] Video content greatly facilitates people's lives, but the development of technology makes it easier to copy, tamper with, and infringe on video content, which brings great economic losses to video copyright manufacturers, so video copyright protection has attracted more and more attention . [0003] Digital watermark information hiding technology is to use different embedding algorithms to embed specific digital watermark information into multimedia products (picture, audio, video, etc.). The digital watermark information with copyright information can be a digital sequence or image, and the watermark (digital sequence or image with copyright information) is embedded in...
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): H04N19/172H04N19/467H04N19/60H04N21/8358G06T1/00
CPCG06T1/005H04N19/172H04N19/467H04N19/60H04N21/8358
Inventor 王兴军陈安琪
Owner SHENZHEN GRADUATE SCHOOL TSINGHUA UNIV