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Movable image watermark insertion device and watermark insertion method

An image and activity technology, applied in computer security devices, image communication, image data processing, etc., can solve the problems of image quality or tone quality degradation, damage, watermark disappearance, etc.

Inactive Publication Date: 2004-07-28
APPLE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the second type of scheme, the electronic watermark is superimposed and inserted into the two-dimensional or three-dimensional sampling value area. When the first type is adopted, the watermark information is difficult to remove, so the watermark has high intensity, but the image quality or tone quality of the original data is obvious. Downgrade
However, when the watermark information is extended too widely, the image quality or tone quality deteriorates, and, due to MPEG encoding / decoding, the watermark sometimes disappears or is damaged

Method used

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  • Movable image watermark insertion device and watermark insertion method
  • Movable image watermark insertion device and watermark insertion method
  • Movable image watermark insertion device and watermark insertion method

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Embodiment Construction

[0091] Fig. 2 is a block diagram showing the first basic structure of the present invention, and more specifically, the figure shows the structure of an apparatus for inserting a visible watermark for a moving image, wherein a visible watermark visually visible in a static state is inserted by a large number of In the active image composed of frames.

[0092] With reference to Fig. 2, frame selection unit 1 selects those frames that will insert watermark information, and it selects frame with such interval, when watermark information is inserted after some frames in a large number of frames that constitute original image, in the moving image of result The watermark information in the medium is visually invisible. The interval can be determined, for example, using a pseudo-random function under controlled conditions.

[0093] The watermark information insertion unit 2 inserts the visually visible watermark information into those frames that have been selected by the frame sele...

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Abstract

The present invention relates to a device and a method for inserting watermark information into a moving image. The copyright ownership of the moving image represented by the watermark information is inserted into some frames of the moving image at irregular intervals. These frames are of such a number that the watermark information in the moving picture is invisible to the naked eye. Also, in these frames, the insertion position of the watermark information is determined based on a random value, and besides that, information restricting the copying of moving images is inserted together with the watermark information. When the moving image has become a static image, the watermark information can be easily seen with the naked eye, so illegal ones such as illegal reproductions are easily exposed.

Description

[0001] This application is a divisional application of Chinese invention patent application 98108421.4 with a filing date of May 11, 1998. technical field [0002] The present invention relates to the processing of motion picture, relate in particular to the technology that inserts watermark in the motion picture that distributes with whole program (package) storage and recording medium, that is, the storage medium of motion picture is video tape, CD-ROM, MO, DVD, etc. Also relates to techniques for inserting watermarks in and detecting watermarks from moving images distributed by network or broadcast-type distribution, that is, moving images via the Internet, digital cable television and digital satellite broadcasting. It also relates to technologies related to copyright management services for moving images distributed by the above two methods, and technologies related to authentication services of watermark information performed by third parties. More specifically, the pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F12/14G06F21/10G06F21/16G06F21/60G06F21/62G06F21/64G06T1/00G11B20/00H04N1/387H04N5/85H04N5/91H04N5/913H04N7/08H04N7/081H04N9/804
CPCH04N2005/91335H04N5/85G11B20/00086H04N21/4334H04N5/913H04N2005/91328G06T2201/0064H04N21/8355G06T2201/0051H04N21/8358H04N9/8042G06T1/0085
Inventor 伊藤裕康秋山良太中川彻
Owner APPLE INC
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