TWI272552B - Method of implanting watermark into images - Google Patents

Abstract

The present invention relates to a method of implanting watermark into images, including the following steps: providing a watermark and plural images; dividing the watermark into plural partial watermarks; and implanting plural partial watermarks into plural images so as to make plural images contain the information of watermark.

Description

1272552

[Technical field to which the invention pertains], 4 This case is a method of implanting a watermark into an image (Spatial DomainU, which divides the floating water =, especially in the frame of the spatial sequence (Frequency Sequence), the image of the fpr 散 knife is scattered into the video sequence. η lL- , frame ) 中〇 [Prior Art] With the media storage media risk of the wisdom of the memory hidden media media [invented this way, the system is scattered! This friend's law, IfL 9 ίλ [invented the electronic deposit, so that it can be fast. Therefore, the Huishui watermarking technology is taken out of the insured object. The purpose of the case is to look into the tfL in the space. The other is to reduce the content of the sub-content. The society is coming, and the woman is saved and spread. However, the media has been converted into digital ig Μ P ^ Ur..., , and the popularity of the Internet, so that the number of confused I and the political cloth, in contrast, the number of 'copyright copyright protection for digital media II: No Authorized use rights are the two systems that cannot be delayed, to protect the watermarking' is the technology that will be available in the A protection materials. Therefore, the standard watermark information in the right of the I achieve copyright protection: the meaning:: can be counted, that is, to establish a watermarking domain (sPaual DomainXh, will be segmented = medium = sequence (Video Se (luence) The frame of the F-water P-shirt image frequency domain conversion operation* can still be taken out for identification: the floating and water-like printing of e is to establish a single frame in the watermarking sequence. Only implant part of the float: Medium: Destruction of the original image.

Page 4 1272552 V. Invention Description (2) In order to achieve the above purpose, the present invention proposes a method for implanting a watermark (W atermark) into an image, the steps of which are: providing a watermark and a plurality of images; dividing the watermark And a plurality of partial watermarks are implanted; and the plurality of partial watermarks are implanted into the plurality of images, so that the plurality of images include the information of the watermark. A method of implanting a watermark into an image as described above, wherein the watermark can be a monochrome image, a grayscale image, or a color image. A method of implanting a watermark into an image as described above, wherein the plurality of partial watermarks are discretely implanted into the plurality of images. A method of implanting a watermark into an image as described above, wherein the plurality of partial watermarks can implant the plurality of images in a spatial domain (S p a t i a 1 D 〇 m a i η ). The method of implanting a watermark into an image as described above, wherein the plurality of partial watermarks can implant the plurality of images in a frequency domain (F r e q u e n c y D 〇 m a i η ). The method for implanting a watermark into an image, wherein the plurality of images may be a plurality of frames of an uncompressed video sequence (V ide 〇 Sequence), as described above, The method for entering an image, wherein the plurality of image signals can be a plurality of frames of a compressed video sequence. A method of implanting a watermark into an image as described, wherein the compressed video sequence can be an Mpeg2 or Mpeg4 video sequence.

The method in the invention (3) is as shown in the example of the invention. As shown in the figure, in the space and domain, part of the information of the two rows of watermark WM is implanted in each frame of the video sequence VS (Video Sequence), that is, the first frame of the video sequence VS The uppermost row TL 1 and the lowermost row BL1 of F 1 are respectively implanted in the 0th line L0 and the 1st line L1 of the watermark WM, and TLn/2 and BLn/2 of the frame Fn/2 are respectively implanted in the floating The last two lines of the watermark WM, Ln-2 and Ln-1, and the TLn/2 + l and BLn/2 + l of the frame Fn/2 + l re-fetch the L0 and L1 of the watermark WM until the video sequence The last frame of VS, Fm, is embedded with partial information of two rows of watermark WM. The watermark WM is a monochrome bitmap (Bitmap), and the video sequence VS is a YU V4 2 0 format. The second figure is a schematic diagram of the watermarking implanted frame, in which the first row of the watermarking dragon L0 is implanted in the uppermost row TL1 of the frame F1 for illustration, and so on. As shown in the figure, each point of L0 is integrated into the multi-point implant TL according to the size ratio of the watermark WM and the frame in the video sequence VS. Here, if the watermark WM of 88*72 is implanted into the CIF (3) For example, in the video sequence VS of 5 2 * 2 8 8 ), each point of l 会 is expanded into 4 points and implanted in TL1. However, since the watermark is a monochrome bitmap, each point occupies only 1 bit (Bi t), and the video sequence vs is 1 bit Byte. Therefore, the point of the watermark doctor can only be implanted in 1 b 11 of the byte. In the second figure, each point of L 〇 is shown as a 4-point map of bit_6i implanted in the byte _ of each point of TL1. The fourth picture is the actual operation result. The figure shows the result of the video sequence vs implanted the watermark WM ( ijm), then the Mpeg4 compression and decompression process, and the watermark WMout taken from it. The point is implanted into the bi t-6 of each point of the video sequence vS. Of course, the point of the watermark can also be implanted in other bits of the video sequence, but the implantation of the high position will cause the upper and lower edges of the picture to tremble, but the detachment

1272552 V. Inventive Note (4) The watermark is the clearest; otherwise, it is more vague. In addition, the watermark can be a grayscale image or a color image in addition to a monochrome image. In order to achieve the anti-counterfeiting effect, the frame in the video sequence can also be reduced, and the copyright information is combined as a watermark. In summary, the present invention is a method for implanting a watermark into an image. In addition to the embodiment disclosed in the preferred embodiment, the split watermark information is dispersed into a plurality of images to make a single image. It only contains part of the watermark information, and the multiple images contain the complete watermark information, which is the feature of this case. The method for depositing images by the watermark in the present case can be performed in a spatial domain or a frequency domain. The image that is implanted with the watermark can be a video of a compressed format such as Mpeg2 or Mpeg4 in addition to the uncompressed video sequence. The technology disclosed in this case can be implemented by a person familiar with the technology, and its unprecedented practice is also patentable, and the application for patent is filed according to law. However, the above embodiments are not sufficient to cover the scope of patents to be protected in this case. Therefore, the scope of the patent application is attached.

1272552 Simple description of the diagram [simple description of the diagram], _ This case can be further understood by the following diagram and detailed description: - First picture: The watermark is implanted into the image in the preferred embodiment of the present invention. Methods. Figure 2: Schematic diagram of the watermark implanted frame. Figure 3: Schematic diagram of b i t - 6 at each point of the watermarked point of the watermark. Figure 4: Actual operation results of the preferred embodiment of the present invention. The figure of the main components is as follows: WM: Watermark VS: Video Sequence F 1,...,Fn/2,Fn/2 + 1,...,F m·Frame LO , LI,···, Ln-2, Ln-1 : information of each line of watermark TL1,...,TLn/2,TLn/2+l,...: the top line of the frame BL1,...,BLn/2, BLn/2+l,...: the bottom line of the frame

Claims (1)

1272552 The scope of patent application—the watermark and watermark image of the Watermark implanted into the image; the steps are as follows: The knife is used to float 7匕p:n & 士, 植i, 卜P is 禝Several partial watermarks; and ^images in the package ίίΪ::ρ:=printed to the plurality of images, so that the plural:, secondary school: V?, the description will be ... 3, such as patent application 'flat ^ Image, a grayscale image or - color image. The method of implanting a watermark into an image by the plurality of parts I and the disciple is as follows: 4. Applying a real brake to a watermark is discretely implanted into the plurality of images. The plurality of parts, the method for implanting a watermark into the image, and the plurality of images. The knife/pro 7 17 can be implanted in the spatial domain (Spatial D〇niain). For example, the method of applying the ocean watermark to the image as described in the plurality of sections VIII1L is applied to the plurality of images. 〉Pre-watermark can be planted in the frequency domain (Frequency D〇main). For example, the method of applying the watermark to the image as described in the plural/stupid item is as follows: The compressed video sequence (Video is called a multi-frame of the mi spoon.) The method of implanting a watermark into the image as described in item 1 of the ^li range, (Frame/8, such as applying for a patented knot. ^ ^ ^ ^ ^, 祀国弟7, the method of implanting a watermark into an image, wherein the sequence of the pressure can also be a Mpeg2 or Mpeg4 video sequence. ^, the jersey image signal can be a compression A plurality of frames of a video sequence. Page 9 1272552 IV. Summary of Chinese Invention (Invention Name: Watermarking (Watermai^iXj^ Method) This is a method of implanting a watermark into an image by providing a watermark and a plurality of images. ; split floating water, printed as a plurality of partial watermarks; and implant a plurality of partial watermarks to a plurality of images 'to make a plurality of images contain watermark information. The representative figure is the first figure. Brief description of the symbol: WM·Watermark VS·Video Sequence F1,...,Fn/2,Fn/2+l,...,Fm: Frame Line / 丄· {g/ l ” V ▼ r, BL1,...,BLn/2,BLn/2 + l,...: The bottommost L〇 of the frame, L1,...,Ln-2, Ln-1 : each line of information TL1 of the watermark, ...,TLn/2, TLn/2 + l,...: The top of the frame, the English abstract (invention name:)