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"" 따옴표 내의 구문과 완전히 일치하는 문서만 검색 예) "Transform and Quantization"

특허 상세정보

Method and apparatus for scene-based video watermarking

국가/구분 United States(US) Patent 등록
국제특허분류(IPC7판) G06K-009/00   
미국특허분류(USC) 382/100
출원번호 US-0921931 (1997-08-27)
발명자 / 주소
출원인 / 주소
대리인 / 주소
    Schwegman, Lundberg, Woessner & Kluth P.A.
인용정보 피인용 횟수 : 182  인용 특허 : 35
초록

A method and apparatus for the scene-based watermarking of video data is disclosed. In one embodiment, each of a number of frames of a scene of video host data undergoes a temporal wavelet transform, from which blocks are extracted. The blocks undergo perceptual masking in the frequency domain, such that a watermark is embedded therein. Once the watermark block is taken out of the frequency domain, a spatial mask of the original block is weighted to the watermark block, and added to the original block to obtain the watermarked block.

대표
청구항

[ I claim:] [1.]1. A computerized method for embedding data representing a watermark into host data relating to video:generating the data representing the watermark;subjecting the host data to a temporal wavelet transform;embedding the data into the host data, as subjected to the temporal wavelet transform, in accordance with a perceptual mask conducted in the frequency domain; and,subjecting the host data, including the data embedded therein, to a non-frequency mask.

이 특허에 인용된 특허 (35)

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