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-0215389 (2002-08-07) |
발명자 / 주소 |
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출원인 / 주소 |
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대리인 / 주소 |
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인용정보 | 피인용 횟수 : 148 인용 특허 : 311 |
A watermark system includes an embedder, detector, and reader. The watermark embedder encodes a watermark signal in a host signal to create a combined signal. The detector looks for the watermark signal in a potentially corrupted version of the combined signal, and computes its orientation. Finally,
A watermark system includes an embedder, detector, and reader. The watermark embedder encodes a watermark signal in a host signal to create a combined signal. The detector looks for the watermark signal in a potentially corrupted version of the combined signal, and computes its orientation. Finally, a reader extracts a message in the watermark signal from the combined signal using the orientation to approximate the original state of the combined signal. While adapted for images, video and audio, the watermark system applies to other electronic and physical media. For example, it can be applied to mark graphical models, blank paper, film and other substrates, texturing objects for ID purposes, etc.
A watermark system includes an embedder, detector, and reader. The watermark embedder encodes a watermark signal in a host signal to create a combined signal. The detector looks for the watermark signal in a potentially corrupted version of the combined signal, and computes its orientation. Finally,
A watermark system includes an embedder, detector, and reader. The watermark embedder encodes a watermark signal in a host signal to create a combined signal. The detector looks for the watermark signal in a potentially corrupted version of the combined signal, and computes its orientation. Finally, a reader extracts a message in the watermark signal from the combined signal using the orientation to approximate the original state of the combined signal. While adapted for images, video and audio, the watermark system applies to other electronic and physical media. For example, it can be applied to mark graphical models, blank paper, film and other substrates, texturing objects for ID purposes, etc. i) are spatio-frequency coefficients obtained by a spatio-frequency transformation (T) of said image (I). 4. Method of inserting a watermarking signal according to claim 3, wherein the step of creating said dictionary comprises the following steps: (A)--setting up a database of images, referred to as learning images, characteristic of a type of image to be watermarked; (B)--for each learning image: (b1)--selecting the coefficients representing the learning image under consideration, obtained by the transformation (T), belonging to at least one sub-band (SB) of the image under consideration; and, (b2)--for each coefficient (Xi) representing said sub-band (SB): determining a neighbourhood (V(Xi)) of the representative coefficient (Xi) under consideration in the learning image under consideration; calculating an energy (E[V(Xi)]) associated with the neighbourhood (V(Xi)) of the coefficient under consideration; and generate electromagnetic wave energy. A grid element may be placed between the first and second electrodes. A contro00, Chong, 324/520; US-6466656, 20021000, Evans et al., 379/093.07; US-6516049, 20030200, Heidari et al., 379/001.01; US-6563864, 20030500, Ibrahim et a ethod of claim 17.
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