CN101262601A - Method for embedding watermark into a image - Google Patents
Method for embedding watermark into a image Download PDFInfo
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- CN101262601A CN101262601A CN 200710086733 CN200710086733A CN101262601A CN 101262601 A CN101262601 A CN 101262601A CN 200710086733 CN200710086733 CN 200710086733 CN 200710086733 A CN200710086733 A CN 200710086733A CN 101262601 A CN101262601 A CN 101262601A
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- watermark
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Abstract
The invention discloses a method for implanting a watermark into images. The method comprises the steps that a watermark and a plurality of images are provided; the watermark is divided into a plurality of partial watermarks and the plurality of partial watermarks are implanted into the plurality of images so as to ensure that the plurality of images contain the information of the watermarks.
Description
Technical field
The present invention relates to a kind of method in the image be implanted in watermark, refer to especially that on spatial domain (SpatialDomain) the watermark image that will cut apart disperses to implant in the picture frame (Frame) of video signal sequence (Video Sequence).
Background technology
Along with the arriving of electronization society, a large amount of traditional media is converted into Digital Media and stores, in order to preserving and propagating.Yet popularizing of internet makes Digital Media be able to quick copy and distribution, and be relative, also increases the risk of using without permission.Therefore, providing the copyright protection regime of Digital Media, with protection creator's intellectual property, is instant problem.
Digital watermark (watermarking) is the hiding technology to protected data of mark that can identify that all rights reserved.Therefore, in video signal Digital Medias such as (Video), implant watermark information, in case when the copyright dispute takes place, just can reach the effect of copyright protection by taking out watermark information in the Digital Media.
Summary of the invention
Purpose of the present invention, promptly be to set up and a kind of method in the image implanted in watermark, tie up on the spatial domain (Spatial Domain), the watermark image that to cut apart disperses to implant the picture frame (Frame) of video signal sequence (VideoSequence), and video sequence is listed in through behind the frequency domain conversion operations, and still can take out can be for the watermark information of identification.
Another object of the present invention is to set up and a kind of method in the image is implanted in watermark, ties up to individual picture frame in the video signal sequence, and the watermark information of an implant part is to reduce the destruction to raw video.
For reaching above-mentioned purpose, the present invention proposes a kind of method with watermark (Watermark) implantation image, the steps include: to provide a watermark and a plurality of image; Cutting apart this watermark is a plurality of part watermarks; And implant these a plurality of part watermarks to these a plurality of images, make the information that comprises this watermark in these a plurality of images.
The method of watermark being implanted image as described, wherein this watermark can be a monochromatic image, a grey-tone image or a chromatic image.
The method of watermark being implanted image as described, wherein these a plurality of part watermarks are to implant these a plurality of images dispersedly.
The method of watermark being implanted image as described, wherein these a plurality of part watermarks can be implanted these a plurality of images in spatial domain (Spatial Domain).
The method of watermark being implanted image as described, wherein these a plurality of part watermarks can be implanted these a plurality of images in frequency domain (Frequency Domain).
The method of watermark being implanted image as described, wherein these a plurality of images can be a plurality of picture frames (Frame) of the video signal sequence of compression (Video Sequence) not.
The method of watermark being implanted image as described, wherein these a plurality of signal of video signal can be a plurality of picture frames (Frame) of the video signal sequence of a compression.
The method of watermark being implanted image as described, wherein the video signal sequence of this compression can be Mpeg2 or Mpeg4 video signal sequence.
Description of drawings
Fig. 1: the method in the image that watermark is implanted of preferred embodiment of the present invention.
Fig. 2: the schematic diagram of picture frame is implanted in watermark.
Fig. 3: the point of watermark is implanted the schematic diagram of the bit-6 of picture frame each point.
Fig. 4: the practical operation result of preferred embodiment of the present invention.
The figure number of icon primary clustering is as follows:
WM: watermark (Watermark)
VS: video signal sequence (Video Sequence)
F
1..., F
N/2, F
N/2+1..., F
m: picture frame (Frame)
L
0, L
1..., L
N-2, L
N-1: the every capable information of watermark
TL
1..., TL
N/2, TL
N/2+1...: the lastrow of picture frame
BL
1..., BL
N/2, BL
N/2+1...: the next line of picture frame
Embodiment
The invention will be further described below in conjunction with the drawings and specific embodiments.
See also Fig. 1, be the method in the image that watermark is implanted of preferred embodiment of the present invention.As shown in the figure, under spatial domain, in each picture frame (Frame) of video signal sequence VS (Video Sequence), implant the partial information of two row watermark WM, i.e. the lastrow TL of first picture frame F1 of video signal sequence VS
1And next line BL
1Implant the 0th row L of watermark WM respectively
0With the 1st row L
1..., picture frame F
N/2TL
N/2And BL
N/2Implant the last two row L of watermark WM respectively
N-2And L
N-1, and picture frame F
N/2+1TL
N/2+1And BL
N/2+1Then seize the L of watermark WM again
0And L
1Implant, up to last picture frame F of video signal sequence VS
mAll implant the partial information of two row watermark WM.Wherein watermark WM is monochromatic bitmap (Bitmap), and video signal sequence VS then is the YUV420 form.
Fig. 2 is the schematic diagram of watermark implantation picture frame, at the 1st row L of this measure watermark WM
0Implant picture frame F
1Lastrow TL
1Do explanation, the rest may be inferred by analogy.As shown in the figure, L
0Every bit system in response to the dimension scale of picture frame among watermark WM and the video signal sequence VS, and generate multiple spot implantation TL
1Is example, then L at this if implant in the video signal sequence VS of CIF (352*288) with the watermark WM of 88*72
0Every bit can generate 4 implant TL
1In.But, because watermark WM is monochromatic bitmap (Bitmap), every bit only accounts for 1 (Bit) size, and the point of video signal sequence VS is 1 byte (Byte).Therefore, the point of watermark WM can only be implanted byte 1bit wherein.Shown in Figure 3, be L
04 of every bit generates implant TL
1The schematic diagram of bit-6 in the each point byte.Fig. 4 then is actual operating result, show among the figure that video signal sequence VS implants watermark WM after, again through the result of Mpeg4 compression and decompression, and the watermark of therefrom taking out, wherein the point of watermark WM system implants the bit-6 of video signal sequence VS each point.
Certainly, other position of the also implantable video signal sequence of the some each point of watermark high-orderly can allow lower edge produces the phenomenon of trembling on the picture but implant, but pure watermark of taking out is the most clear; Otherwise it is then comparatively fuzzy.In addition, watermark also can be grey-tone image or chromatic image except using monochromatic image.And in order to reach false proof effect, also the picture frame in the video signal sequence can be dwindled, merge copyright information as watermark.
In sum, the present invention is a kind of method of watermark being implanted image, except the disclosed execution mode of preferred embodiment, as long as be that the watermark information that will cut apart disperses to implant in a plurality of images, make the watermark information that only comprises part in the single image, then comprise the complete watermark information that can pure get in a plurality of images, be feature of the present invention.Wherein, the method for watermark implantation image of the present invention can be carried out in spatial domain (Spatial Domain) or frequency domain (Frequency Domain).The image of implanted watermark except the video signal sequence of not compression, also can be the video signal of compression forms such as Mpeg2 or Mpeg4.
The technology that the present invention disclosed must implement according to this by haveing the knack of the present technique personage, and its unprecedented practice also possesses patentability, and the whence proposes the application of patent according to Patent Law.
Claims (8)
1. the method with watermark (Watermark) implantation image the steps include:
One watermark and a plurality of image are provided;
Cutting apart this watermark is a plurality of part watermarks; And
Implant these a plurality of part watermarks to these a plurality of images, make the information that comprises this watermark in these a plurality of images.
2. the method for watermark (Watermark) being implanted image according to claim 1 is characterized by wherein this watermark and can be a monochromatic image, a grey-tone image or a chromatic image.
3. the method for watermark (Watermark) being implanted image according to claim 1, it is characterized by wherein these a plurality of part watermarks is to implant these a plurality of images dispersedly.
4. the method for watermark (Watermark) being implanted image according to claim 1 is characterized by wherein these a plurality of part watermarks and can implant these a plurality of images in spatial domain.
5. the method for watermark (Watermark) being implanted image according to claim 1 is characterized by wherein these a plurality of part watermarks and can implant these a plurality of images in frequency domain.
6. the method for watermark (Watermark) being implanted image according to claim 1 is characterized by wherein these a plurality of images and can be a plurality of picture frames of the video signal sequence of compression not.
7. the method for watermark (Watermark) being implanted image according to claim 1 is characterized by a plurality of picture frames that these a plurality of signal of video signal wherein can be the video signal sequence of a compression.
8. the method for watermark (Watermark) being implanted image according to claim 1, the video signal sequence that it is characterized by wherein this compression can be Mpeg2 or Mpeg4 video signal sequence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710086733 CN101262601A (en) | 2007-03-08 | 2007-03-08 | Method for embedding watermark into a image |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200710086733 CN101262601A (en) | 2007-03-08 | 2007-03-08 | Method for embedding watermark into a image |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101262601A true CN101262601A (en) | 2008-09-10 |
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ID=39962761
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200710086733 Pending CN101262601A (en) | 2007-03-08 | 2007-03-08 | Method for embedding watermark into a image |
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| CN (1) | CN101262601A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761199A (en) * | 2016-03-25 | 2016-07-13 | 鲁东大学 | Robustness color image watermarking method based on combination domain |
-
2007
- 2007-03-08 CN CN 200710086733 patent/CN101262601A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105761199A (en) * | 2016-03-25 | 2016-07-13 | 鲁东大学 | Robustness color image watermarking method based on combination domain |
| CN105761199B (en) * | 2016-03-25 | 2018-10-12 | 鲁东大学 | A kind of Robust Color Image water mark method based on combination fields |
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Open date: 20080910 |