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    • 2. 发明授权
    • Image processing apparatus and method and storage medium
    • 图像处理装置及方法及存储介质
    • US06826290B1
    • 2004-11-30
    • US09688108
    • 2000-10-16
    • Tomochika MurakamiKeiichi IwamuraJunichi Hayashi
    • Tomochika MurakamiKeiichi IwamuraJunichi Hayashi
    • G06K900
    • G06T1/0064G06T1/0028G06T2201/0065
    • To provide a variety of methods for extracting digital watermark information from an image as correctly as possible. For example, a first pattern arrangement and a second pattern arrangement which is different from the first pattern arrangement for use in a calculation for extracting the digital watermark information are provided. A state of an original image without the digital watermark information embedded is inferred, using a second pattern arrangement, and a reliability of the digital watermark information to be extracted in accordance with the state is determined. Or to decide the embedding position of the digital watermark information from the image data, the extracting start position is discriminated by detecting the positional information by multiple times at the different extracting start positions. Or to detect a geometrical distortion, a registration signal is embedded on the image.
    • 提供从图像中​​尽可能正确地提取数字水印信息的各种方法。 例如,提供了与用于提取数字水印信息的计算中使用的第一图案配置不同的第一图案布置和第二图案布置。 推测出没有嵌入数字水印信息的原始图像的状态,使用第二图案排列,并且确定要根据状态提取的数字水印信息的可靠性。 或者为了从图像数据确定数字水印信息的嵌入位置,通过在不同的提取开始位置检测位置信息多次来判别提取开始位置。 或者为了检测几何失真,将注册信号嵌入在图像上。
    • 8. 发明授权
    • Data processing apparatus and method and storage medium
    • 数据处理装置及方法及存储介质
    • US06434253B1
    • 2002-08-13
    • US09238570
    • 1999-01-28
    • Junichi HayashiKeiichi Iwamura
    • Junichi HayashiKeiichi Iwamura
    • G06K900
    • H04N19/467G06T1/0035G06T2201/0052H04N1/32154H04N1/3216H04N1/32165H04N1/3217H04N1/32187H04N1/32277H04N2201/3233H04N2201/327H04N2201/328
    • It is an object of this invention to efficiently embed digital watermark information in the above image or audio data. In order to achieve this object, there is provided a data processing apparatus comprising input means for inputting digital data including at least one of image data and audio data, transforming means for transforming a data format of the digital data, compression means for compressing the digital data whose data format has been transformed by the transforming means, and embedding means for embedding digital watermark information in the digital data whose data format has been transformed by the transforming means, wherein the apparatus includes a plurality of image processing modes, compresses the digital data by using the transforming means and the compression means in a first mode, and embeds digital watermark information in the digital data by using the transforming means and the embedding means in a second mode.
    • 本发明的目的是有效地将数字水印信息嵌入到上述图像或音频数据中。 为了实现该目的,提供了一种数据处理装置,包括用于输入包括图像数据和音频数据中的至少一个的数字数据的输入装置,用于变换数字数据的数据格式的变换装置,用于压缩数字数据的压缩装置 数据格式已由变换装置变换的数据,以及嵌入装置,用于将数字水印信息嵌入数据格式已被变换装置变换的数字数据中,其中,该装置包括多个图像处理模式,压缩数字数据 通过在第一模式中使用变换装置和压缩装置,并且在第二模式中通过使用变换装置和嵌入装置将数字水印信息嵌入数字数据。