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    Image processing apparatus and method therefor
    92.
    发明授权
    Image processing apparatus and method therefor 有权

    公开(公告)号：US09805433B2

    公开(公告)日：2017-10-31

    申请号：US14298151

    申请日：2014-06-06

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Ayuta Kawazu

    IPC: G06T1/00

    CPC classification number: G06T1/0028 ,  G06T2201/0201

    Abstract: An area where development processing is irregular in imaging data are detected as an irregularity area. At least two areas having approximate feature amounts in the imaging data are detected as approximate areas. An altered region in the imaging data is specified from the approximate areas based on the irregularity area and the approximate areas.

    RICH FEATURE MINING TO COMBAT ANTI-FORENSICS AND DETECT JPEG DOWN-RECOMPRESSION AND INPAINTING FORGERY ON THE SAME QUANTIZATION
    95.
    发明申请
    RICH FEATURE MINING TO COMBAT ANTI-FORENSICS AND DETECT JPEG DOWN-RECOMPRESSION AND INPAINTING FORGERY ON THE SAME QUANTIZATION 有权
    丰富的特征采矿来组合防伪和检测JPEG下恢复和在同一数量上强化伪造

    公开(公告)号：US20160132985A1

    公开(公告)日：2016-05-12

    申请号：US14735921

    申请日：2015-06-10

    Applicant: Sam Houston State University

    Inventor： Qingzhong Liu

    IPC: G06T1/00 ,  G06T7/40 ,  G06K9/62 ,  G06T7/00

    CPC classification number: G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0081 ,  G06T2201/0201

    Abstract: A method of detecting tampering in a compressed digital image includes extracting one or more neighboring joint density features from a digital image under scrutiny and extracting one or more neighboring joint density features from an original digital image. The digital image under scrutiny and the original digital image are decompressed into a spatial domain. Tampering in the digital image under scrutiny is detected based on at least one difference in a neighboring joint density feature of the digital image under scrutiny and a neighboring joint density feature of the original image. In some embodiments, detecting tampering in the digital image under scrutiny includes detecting down-recompression of at least a portion of the digital image. In some embodiments, detecting tampering in the digital image includes detecting inpainting forgery in the same quantization.

    Abstract translation: 检测压缩数字图像中的篡改的方法包括从仔细检查的数字图像中提取一个或多个相邻关节密度特征，并从原始数字图像提取一个或多个相邻关节密度特征。 经审查的数字图像和原始数字图像被解压缩成空间域。 基于仔细检查的数字图像的相邻关节密度特征和原始图像的相邻关节密度特征中的至少一个差异来检测在检查中的数字图像中的篡改。 在一些实施例中，检测数字图像中的篡改包括检测数字图像的至少一部分的下压缩。 在一些实施例中，检测数字图像中的篡改包括在相同的量化中检测伪像伪造。

    Image processing apparatus and method thereof
    96.
    发明授权
    Image processing apparatus and method thereof 有权
    图像处理装置及其方法

    公开(公告)号：US09336556B2

    公开(公告)日：2016-05-10

    申请号：US14150792

    申请日：2014-01-09

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Ayuta Kawazu

    IPC: G06K9/00 ,  G06T1/00 ,  G06T3/40

    CPC classification number: G06T1/0028 ,  G06T3/4015 ,  G06T2201/0201

    Abstract: Pattern information of a color filter array and algorithm information of color interpolation processing used in photography of input image data are obtained. Comparative image data is generated from the input image data using the pattern information and algorithm information. The comparative image data and input image data are compared to detect alteration of the input image data.

    Abstract translation: 获得滤色器阵列的图案信息和用于输入图像数据的拍摄中使用的颜色插值处理的算法信息。 使用图案信息和算法信息从输入图像数据生成比较图像数据。 将比较图像数据和输入图像数据进行比较，以检测输入图像数据的变化。

    IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD
    97.
    发明申请
    IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD 有权
    图像处理装置和图像处理方法

    公开(公告)号：US20130223731A1

    公开(公告)日：2013-08-29

    申请号：US13755832

    申请日：2013-01-31

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Ayuta Kawazu

    IPC: G06K9/46

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

    Abstract: A CFA pattern is extracted from captured image data for each first unit region. A first altered region is detected from disturbance of the periodicity of the CFA pattern, and the first altered region is an image region in which copying has been performed from image data different from the captured image data to the captured image data. The feature amount of the captured image data is extracted for each second unit region different in size from the first unit region. The feature amounts are compared for each second unit region to detect a second altered region, and the second altered region is an image region in which copying has been performed from the captured image data to the captured image data. Information concerning the first and second altered regions are output as alteration detection results in the captured image data.

    Abstract translation: 从每个第一单位区域的捕获图像数据中提取CFA图案。 从CFA图案的周期性的干扰中检测第一改变区域，并且第一改变区域是其中已经从与捕获的图像数据不同的图像数据执行复制到图像数据的图像区域。 对于与第一单位区域不同的大小的第二单位区域，提取拍摄图像数据的特征量。 对于每个第二单位区域比较特征量以检测第二改变区域，并且第二改变区域是其中已经从捕获的图像数据执行复制到捕获的图像数据的图像区域。 关于第一和第二改变区域的信息作为捕获图像数据中的改变检测结果被输出。

    IMAGE PROCESSING METHOD AND APPARATUS FOR TAMPER PROOFING
    98.
    发明申请
    IMAGE PROCESSING METHOD AND APPARATUS FOR TAMPER PROOFING 审中-公开
    图像处理方法和防篡改装置

    公开(公告)号：US20130039588A1

    公开(公告)日：2013-02-14

    申请号：US13559985

    申请日：2012-07-27

    Applicant: Ji LI ,  Xiaowei Yang

    Inventor： Ji LI ,  Xiaowei Yang

    IPC: G06K9/46

    CPC classification number: G06T1/0028 ,  G06T2201/0081 ,  G06T2201/0201

    Abstract: An image processing method and apparatus for tamper proofing are proposed. The method includes: acquiring a first robust feature representation of a first set of robust feature points for an original image and a second robust feature representation of a second set of robust feature points for an image to be detected, respectively; matching the first robust feature representation with the second robust feature representation so as to acquire mismatching feature points; and determining whether the image to be detected has been tampered with relative to the original image based on a distribution characteristic of the mismatching feature points. With the embodiments of the invention, the distribution characteristic of the mismatching feature points is analyzed based on the robust feature representations of the original image and the image to be detected, so that conventional operations on the image can be distinguished effectively from tampering in the image with sufficient robustness.

    Abstract translation: 提出了一种用于防篡改的图像处理方法和装置。 该方法包括：分别获取原始图像的第一组鲁棒特征点的第一鲁棒特征表示和待检测图像的第二组鲁棒特征点的第二鲁棒特征表示; 将第一鲁棒特征表示与第二鲁棒特征表示相匹配，以获得不匹配的特征点; 以及基于所述不匹配特征点的分布特性来确定所述待检测图像是否相对于所述原始图像被篡改。 利用本发明的实施例，基于原始图像和要检测的图像的鲁棒特征分析不匹配特征点的分布特性，使得可以有效地区分图像上的常规操作以防止图像中的篡改 具有足够的鲁棒性。

    Information processing apparatus and information processing method
    99.
    发明授权
    Information processing apparatus and information processing method 有权
    信息处理装置和信息处理方法

    公开(公告)号：US08340347B2

    公开(公告)日：2012-12-25

    申请号：US12624293

    申请日：2009-11-23

    Applicant: Junichi Hayashi ,  Yoshiharu Imamoto ,  Nobuhiro Tagashira ,  Kazuya Kishi ,  Yasuhiro Nakamoto ,  Kazuomi Oishi

    Inventor： Junichi Hayashi ,  Yoshiharu Imamoto ,  Nobuhiro Tagashira ,  Kazuya Kishi ,  Yasuhiro Nakamoto ,  Kazuomi Oishi

    IPC: G06K9/00

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

    Abstract: This invention provides a technique of preventing determination of image alteration when digital image data has undergone, e.g., rotation without any substantial change in contents. To do this, an area separation processing unit separates image data into areas. For each of the separated areas, an area feature value calculator calculates an area feature value independent of the coordinate information of the image. An area order sorter sorts the separated areas in accordance with the calculated area feature values. A validation data generation processing unit generates validation data based on the sort result.

    Abstract translation: 本发明提供了当数字图像数据经历例如旋转而没有任何实质内容改变时防止图像变化的确定的技术。 为此，区域分离处理单元将图像数据分离成区域。 对于每个分离区域，区域特征值计算器计算与图像的坐标信息无关的区域特征值。 区域排序排序器根据计算的区域特征值对分离的区域进行排序。 验证数据生成处理单元基于分类结果生成验证数据。

    METHOD AND SYSTEM FOR EFFICIENT WATERMARKING OF VIDEO CONTENT
    100.
    发明申请
    METHOD AND SYSTEM FOR EFFICIENT WATERMARKING OF VIDEO CONTENT 有权
    视频内容有效水印的方法与系统

    公开(公告)号：US20120148089A1

    公开(公告)日：2012-06-14

    申请号：US13027675

    申请日：2011-02-15

    Applicant: Aditya Vashistha ,  Rajarathnam Nallusamy ,  Sanjoy Paul

    Inventor： Aditya Vashistha ,  Rajarathnam Nallusamy ,  Sanjoy Paul

    IPC: G06K9/00

    CPC classification number: G09C5/00 ,  G06T1/005 ,  G06T1/0085 ,  G06T2201/0201 ,  H04L2209/608

    Abstract: A method for watermarking of video content is provided. An averaged scene image is computed for each scene of video content by performing averaging of frames present in each scene of video content. For each averaged scene image a set of random numbers are generated using a secret key to identify pixels at random locations of the averaged scene image. The secret key is associated with a watermark pattern corresponding to each averaged scene image. The identified pixels in each averaged scene image are mapped to each pixel of corresponding watermark pattern to obtain respective mapped pixels. Using respective mapped pixels, values of verification information are fetched and assigned using predetermined rules. The values of verification information are arranged to obtain first visual cryptographic share of watermark pattern for each averaged scene image.

    Abstract translation: 提供了一种用于水印视频内容的方法。 通过对视频内容的每个场景中存在的帧进行平均，对视频内容的每个场景计算平均场景图像。 对于每个平均场景图像，使用秘密密钥来生成一组随机数，以识别平均场景图像的随机位置处的像素。 秘密密钥与对应于每个平均场景图像的水印图案相关联。 将每个平均场景图像中的识别像素映射到相应水印图案的每个像素，以获得相应的映射像素。 使用相应的映射像素，使用预定规则来获取和分配验证信息的值。 布置验证信息的值以获得每个平均场景图像的水印图案的第一可视加密份额。

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