In a series of individual challenges, the participants were given a sample audio piece, with one of the watermarks embedded.
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Watermarks were originally used by governments for documents, currency and other applications to help prevent counterfeiting.
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In fact, some of those books contained both the identical cross on mounts and identical bull's head watermarks.
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He has worked on problems to do with stereo and motion correspondence and multimedia issues of image database retrieval and watermarking.
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Since watermarks must be inserted into the video, they only identify copies of the particular video made after that point in time.
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Detecting watermarks in a video can indicate the source of an unauthorized copy.
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About a year later in 1905, these were replaced by stamps with an overprint in seriffed capitals, and these exist with two different watermarks.
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There are no watermarks or limitations, regardless of creation method.
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The series was added to over the years, and there are a great number of variants of papers, sizes, colors, watermarks, and plate flaws.
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The euro notes contain many complex security features such as watermarks, invisible ink, holograms and microprinting that document their authenticity.
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The fifty euro note contains several complex security features such as watermarks, invisible ink, holograms and microprinting that document its authenticity.
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The ten euro note contains several complex security features such as watermarks, invisible ink, holograms and microprinting that document its authenticity.
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A number of completed works can be shown (e.g., by inspecting watermarks or inks) to be completions of fragments that had long been left incomplete.
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One specialty use of carbon tetrachloride was in stamp collecting, to reveal watermarks on postage stamps without damaging them.
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Quantization watermarks suffer from low robustness, but have a high information capacity due to rejection of host interference.
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These examples are from corpora and from sources on the web. Any opinions in the examples do not represent the opinion of the Cambridge Dictionary editors or of Cambridge University Press or its licensors.
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