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    Rich feature mining to combat anti-forensics and detect JPEG down-recompression and inpainting forgery on the same quantization
    51.
    发明授权
    Rich feature mining to combat anti-forensics and detect JPEG down-recompression and inpainting forgery on the same quantization 有权

    公开(公告)号：US09922389B2

    公开(公告)日：2018-03-20

    申请号：US14735921

    申请日：2015-06-10

    Applicant: Sam Houston State University

    Inventor： Qingzhong Liu

    IPC: G06K9/00 ,  G06K9/46 ,  G06K9/40 ,  G06T1/00

    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.

    IMAGE PROCESSING APPARATUS AND METHOD THEREFOR
    53.
    发明申请
    IMAGE PROCESSING APPARATUS AND METHOD THEREFOR 有权
    图像处理装置及其方法

    公开(公告)号：US20140376812A1

    公开(公告)日：2014-12-25

    申请号：US14298151

    申请日：2014-06-06

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Ayuta Kawazu

    IPC: G06K9/46 ,  G06T7/00

    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.

    Abstract translation: 作为不规则区域，检测成像数据的显影处理不规则的区域。 在成像数据中具有近似特征量的至少两个区域被检测为大致区域。 基于不规则区域和近似区域，从大致区域指定成像数据中的改变区域。

    IMAGE PROCESSING APPARATUS AND METHOD THEREOF
    54.
    发明申请
    IMAGE PROCESSING APPARATUS AND METHOD THEREOF 有权
    图像处理装置及其方法

    公开(公告)号：US20140211979A1

    公开(公告)日：2014-07-31

    申请号：US14150792

    申请日：2014-01-09

    Applicant: CANON KABUSHIKI KAISHA

    Inventor： Ayuta KAWAZU

    IPC: G06T1/00 ,  G06T7/40

    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 feature extraction device
    55.
    发明授权
    Image feature extraction device 有权
    图像特征提取装置

    公开(公告)号：US08768064B2

    公开(公告)日：2014-07-01

    申请号：US13061027

    申请日：2009-07-14

    Applicant: Kota Iwamoto ,  Ryoma Oami

    Inventor： Kota Iwamoto ,  Ryoma Oami

    IPC: G06K9/46

    CPC classification number: G06K9/38 ,  G06F17/30256 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0201

    Abstract: This image feature extraction device extracts, from an image, an image feature that makes it possible to adjust the balance between identification capability and robustness, which are the scales of the capability of determining identity of images. This image feature extraction device executes hierarchical quantization to calculate quantization indexes of a plurality of hierarchies in accordance with a previously defined hierarchical quantization method for each quantization target region of an image, and outputs a hierarchical quantization index code, which is an encoding allowing unique specification of the quantization indexes of the respective hierarchies of each quantization target region.

    Abstract translation: 该图像特征提取装置从图像中提取图像特征，使得可以调整识别能力和鲁棒性之间的平衡，这是确定图像身份的能力的尺度。 该图像特征提取装置执行分层量化以根据对于图像的每个量化目标区域的先前定义的分层量化方法来计算多个层次的量化索引，并且输出作为允许唯一规范的编码的分层量化索引代码 的量化对象区域的各层次的量化索引。

    System and method for image authentication
    57.
    发明授权
    System and method for image authentication 有权
    用于图像认证的系统和方法

    公开(公告)号：US08483427B2

    公开(公告)日：2013-07-09

    申请号：US12892148

    申请日：2010-09-28

    Applicant: Lei Yang ,  Jun Tian ,  Dapeng Oliver Wu ,  Hong Heather Yu

    Inventor： Lei Yang ,  Jun Tian ,  Dapeng Oliver Wu ,  Hong Heather Yu

    IPC: G06K9/62

    CPC classification number: G06K9/6211 ,  G06F17/30256 ,  G06T1/0028 ,  G06T2201/0052 ,  G06T2201/0201 ,  H04N21/44008 ,  H04N21/4627 ,  H04N21/8352 ,  H04N21/8355

    Abstract: In accordance with an embodiment, a method of authenticating images includes electronically receiving an anchor image and a query image, performing a feature point extraction of an anchor image, and performing a feature point extraction of a query image. The method also includes clustering feature points of the anchor image and feature points of the query image, where clustering includes determining matching feature points, determining outlier feature points, and excluding outlier feature points. Whether the anchor image is similar to the query image is determined based on a distance between the feature points of the anchor image and the feature points of the query image. If the anchor image is similar to the query image, possible tampered areas of the query image based on the outlier feature points are identified.

    Abstract translation: 根据实施例，认证图像的方法包括电子地接收锚图像和查询图像，执行锚图像的特征点提取，以及执行查询图像的特征点提取。 该方法还包括锚图像的聚类特征点和查询图像的特征点，其中聚类包括确定匹配特征点，确定离群点特征点，并排除异常值特征点。 基于锚图像的特征点与查询图像的特征点之间的距离来确定锚图像是否类似于查询图像。 如果锚图像与查询图像相似，则识别基于异常特征点的查询图像的可能的篡改区域。

    METHODS AND A COMPUTING DEVICE FOR DETERMINING WHETHER A MARK IS GENUINE
    60.
    发明申请
    METHODS AND A COMPUTING DEVICE FOR DETERMINING WHETHER A MARK IS GENUINE 审中-公开
    方法和用于确定标记是否产生的计算设备

    公开(公告)号：WO2016133564A1

    公开(公告)日：2016-08-25

    申请号：PCT/US2015/058620

    申请日：2015-11-02

    Applicant: SYS-TECH SOLUTIONS, INC.

    Inventor： SOBORSKI, Michael, L.

    IPC: G06K9/46 ,  G06K19/06

    CPC classification number: G06T1/0042 ,  G06F21/44 ,  G06K7/10 ,  G06T1/0028 ,  G06T2201/0063 ,  G06T2201/0201

    Abstract: The present disclosure is generally directed to a method and computing device for determining whether a mark is genuine. According to various embodiments, a computing device (or logic circuitry thereof) uses unintentionally-produced artifacts within a genuine mark to define an identifiable electronic signature, and extracts certain location identifiers corresponding to certain measured features of the signature in order to enhance the ease and speed with which numerous genuine signatures can be searched and compared with signatures of candidate marks.

    Abstract translation: 本公开通常涉及用于确定标记是否是真实的方法和计算装置。 根据各种实施例，计算设备（或其逻辑电路）使用真实标记内的无意产生的伪像来定义可识别的电子签名，并且提取与签名的某些测量特征相对应的某些位置标识符，以便增强容易性和 可以搜索许多真实签名并与候选标记的签名进行比较的速度。

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