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    Image processing device and method therefor
    125.
    发明专利
    Image processing device and method therefor 有权
    图像处理装置及其方法

    公开(公告)号：JP2013211834A

    公开(公告)日：2013-10-10

    申请号：JP2013009618

    申请日：2013-01-22

    Applicant: Canon Inc ,  キヤノン株式会社

    Inventor： KAWAZU AYUTA

    IPC: H04N1/387 ,  G06T1/00

    CPC classification number: G06K9/46 ,  G06K2009/00583 ,  G06T1/0028 ,  G06T2201/0201

    Abstract: PROBLEM TO BE SOLVED: To efficiently detect the alteration of image data.SOLUTION: A different image copy detector unit 203 extracts a CFA pattern from imaged image data on the basis of a first unit area, and from the irregular periodicity of the CFA pattern, detects a first alteration area in which copy is made from image data, different from the imaged image data, to the imaged image data. An identical image copy detector unit 203 extracts a feature amount of the imaged image data, to compare the feature amount of the imaged image data on the basis of a second unit area having a different size from the first unit area, and from the imaged image data, detects a second alteration area in which a copy is made to the imaged image data. As a result of the alteration detection in the imaged image data, an output unit 206 outputs information related to the first and second alteration areas.

    Abstract translation: 要解决的问题：有效地检测图像数据的变化。解决方案：不同的图像复制检测器单元203基于第一单位区域从成像的图像数据中提取CFA图案，并且从CFA图案的不规则周期性， 检测与成像图像数据不同的图像数据进行复制的第一改变区域到成像图像数据。 相同的图像复制检测器单元203提取成像图像数据的特征量，以基于具有与第一单位区域不同的尺寸的第二单位区域和从成像图像比较成像图像数据的特征量 数据，检测对成像图像数据进行复制的第二改变区域。 作为成像图像数据中的改变检测的结果，输出单元206输出与第一和第二改变区域有关的信息。

    Information processing apparatus, and information processing method
    127.
    发明专利
    Information processing apparatus, and information processing method 有权
    信息处理设备和信息处理方法

    公开(公告)号：JP2010154499A

    公开(公告)日：2010-07-08

    申请号：JP2009204721

    申请日：2009-09-04

    Applicant: Canon Inc ,  キヤノン株式会社

    Inventor： HAYASHI JUNICHI ,  TAGASHIRA NOBUHIRO ,  KISHI KAZUYA ,  NAKAMOTO YASUHIRO ,  IMAMOTO KICHIJI ,  OISHI KAZUOMI

    IPC: H04N1/387 ,  G09C1/00 ,  H04L9/32

    CPC classification number: G06T1/0028 ,  G06T1/0064 ,  G06T2201/0201

    Abstract: PROBLEM TO BE SOLVED: To provide an originality assurance technique by which image alteration is not determined when digital image data simply have undergone, e.g., rotation, enlargement or reduction without any substantial change in contents. SOLUTION: An information processing apparatus includes: a calculator which calculates the feature value of image data, the feature value being unchangeable when the image data rotate; and a validation data generator which generates, based on the feature value calculated by the calculator, validation data to validate alteration on the image data. COPYRIGHT: (C)2010,JPO&INPIT

    Abstract translation: 要解决的问题：提供一种独创性保证技术，当数字图像数据简单地经历例如旋转，放大或缩小而没有内容的任何实质性改变时，图像变化不被确定。 解决方案：信息处理设备包括：计算器，其计算图像数据的特征值，特征值在图像数据旋转时不变; 以及验证数据生成器，其基于由计算器计算出的特征值生成验证数据，以验证对图像数据的改变。 版权所有（C）2010，JPO＆INPIT

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