최소 단어 이상 선택하여야 합니다.
최대 10 단어까지만 선택 가능합니다.
다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
NTIS 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
DataON 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Edison 바로가기다음과 같은 기능을 한번의 로그인으로 사용 할 수 있습니다.
Kafe 바로가기국가/구분 | United States(US) Patent 등록 |
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국제특허분류(IPC7판) |
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출원번호 | US-0381807 (1995-02-01) |
발명자 / 주소 |
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출원인 / 주소 |
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인용정보 | 피인용 횟수 : 448 인용 특허 : 0 |
A system for placing a visible “watermark”on a digital image is disclosed, wherein an image of the watermark is combined with the digital image. The pixels of the watermark image are examined, and for each pixel whose value is not a specified “transparent”value, the corresponding pixel of the origin
A system for placing a visible “watermark”on a digital image is disclosed, wherein an image of the watermark is combined with the digital image. The pixels of the watermark image are examined, and for each pixel whose value is not a specified “transparent”value, the corresponding pixel of the original image is modified by changing its brightness but its chromaticities. This results in a visible mark which allows the contents of the image to be viewed clearly, but which discourages unauthorized use of the image.
A method of placing a visible watermark on a digital image, comprising the steps of: providing a digital original image; providing a digital watermark image; and, producing a watermarked image by superimposing the watermark image on the original image without changing the chromaticities of pixels of
A method of placing a visible watermark on a digital image, comprising the steps of: providing a digital original image; providing a digital watermark image; and, producing a watermarked image by superimposing the watermark image on the original image without changing the chromaticities of pixels of the original image as watermarked.
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