公开(公告)号：US20090169050A1

公开(公告)日：2009-07-02

申请号：US11916104

申请日：2006-05-18

Applicant: Franz-Erich Wolter ,  Martin Reuter ,  Niklas Peinecke

Inventor： Franz-Erich Wolter ,  Martin Reuter ,  Niklas Peinecke

IPC: G06K9/00

CPC classification number: G06T17/00 ,  G06T2201/0201

Abstract: A method for characterization of objects has the steps of: a) describing an object with an elliptical self-adjoint eigenvalue problem in order to form an isometrically invariant model; b) determining eigenvalues of the eigenvalue problem; and c) characterizing the object by the eigenvalues.

Abstract translation: 用于表征对象的方法具有以下步骤：a）描述具有椭圆自相关特征值问题的对象，以便形成等角不变模型; b）确定特征值问题的特征值; 和c）通过特征值来表征对象。

公开(公告)号：US20090092309A1

公开(公告)日：2009-04-09

申请号：US11869123

申请日：2007-10-09

Applicant: Matthew A. Calman ,  Lisa Gibson ,  Lowell R. Huff ,  James G. Ronca

Inventor： Matthew A. Calman ,  Lisa Gibson ,  Lowell R. Huff ,  James G. Ronca

IPC: G06K9/00

CPC classification number: G06K9/18 ,  G06F17/30247 ,  G06K9/033 ,  G06T1/0028 ,  G06T2201/0201 ,  H04N1/32128 ,  H04N1/32144 ,  H04N2201/3235 ,  H04N2201/3236 ,  H04N2201/327 ,  H04N2201/3281

Abstract: Image integrity in an archive can be verified using document characteristics. Embodiments of the invention provide a way to verify the integrity of a stored document image by determining document characteristics, which can also be embedded in the image file. Before allowing access to the image file by an application, the characteristics data from an image analysis can be compared to either or both of, characteristics information otherwise stored, or embedded characteristics data. The embedded data can optionally be encrypted. In example embodiments the data can include a result of an optical character recognition of contents of the document, a length of data describing the image, a percentage of a specified color of pixels in the image, or a checksum. Example embedding techniques can include those making use of a tagged image file format (TIFF) header, a steganographic watermark, or an image artifact.

Abstract translation: 存档中的图像完整性可以使用文档特征进行验证。 本发明的实施例提供了一种通过确定文档特性来验证所存储的文档图像的完整性的方式，文档特征也可以被嵌入在图像文件中。 在允许应用程序访问图像文件之前，来自图像分析的特征数据可以与另外存储的特征信息或嵌入的特征数据中的一个或两者进行比较。 嵌入式数据可以可选地加密。 在示例实施例中，数据可以包括文档内容的光学字符识别的结果，描述图像的数据的长度，图像中的指定颜色的像素的百分比或校验和。 示例嵌入技术可以包括使用标记图像文件格式（TIFF）头，隐写水印或图像伪影的那些。

公开(公告)号：US09940572B2

公开(公告)日：2018-04-10

申请号：US15374729

申请日：2016-12-09

Applicant: SYS-TECH SOLUTIONS, INC.

Inventor： Michael L. Soborski

IPC: G06K9/00 ,  G06K19/10 ,  G06K19/06 ,  G06K19/08 ,  G06F17/30 ,  G06K7/10 ,  G06T1/00

CPC classification number: G06K19/10 ,  G06F17/30244 ,  G06F17/30247 ,  G06F17/3028 ,  G06F21/44 ,  G06F21/73 ,  G06K7/10 ,  G06K19/06028 ,  G06K19/06037 ,  G06K19/06112 ,  G06K19/086 ,  G06T1/0028 ,  G06T1/0042 ,  G06T2201/0063 ,  G06T2201/0201 ,  H04L9/3247 ,  H04L2209/56 ,  H04L2209/608 ,  H04L2209/805

Abstract: The present disclosure is generally directed to a method and computing device for determining whether a mark is genuine. According to various implementations, a computing device (or logic circuitry thereof) uses unintentionally-produced artifacts within a genuine mark to define an identifiable electronic signature, extracts certain attributes of the signature (such as deviation from the mean value for each band of the signature), and assigns numerical values to the extracted attributes in order to create a hash identifier that is significantly smaller than the electronic signature itself. The hash identifier is then used as an index for a database of electronic signatures (of genuine marks) to enhance the ease and speed with which numerous genuine signatures can be searched (e.g., in a database) and compared with signatures (of candidate marks.

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.

公开(公告)号：US20160292809A1

公开(公告)日：2016-10-06

申请号：US15181018

申请日：2016-06-13

Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor： Malgorzata M. Sturgill ,  Steven J. Simske ,  Jason S. Aronoff ,  Marie Vans ,  Paul S. Everest

IPC: G06T1/00 ,  G06K9/46 ,  G06K9/62

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

Abstract: A counterfeit identification performance attribute (SIPA) sensitivity to changes in resolution of the image for features of an image is determined. The CIPA sensitivity for the features is used to choose at least one feature to determine whether the image on a sample is a counterfeit.

Abstract translation: 确定对图像的特征的图像的分辨率的变化的伪造识别性能属性（SIPA）灵敏度。 功能的CIPA灵敏度用于选择至少一个功能来确定样品上的图像是否为假冒。

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。

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。

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。

公开(公告)号：US08488834B2

公开(公告)日：2013-07-16

申请号：US11940347

申请日：2007-11-15

Applicant: Chris W. Honsinger ,  Paul W. Jones ,  Robert J. McComb

Inventor： Chris W. Honsinger ,  Paul W. Jones ,  Robert J. McComb

IPC: G06K9/00 ,  G06K9/34

CPC classification number: H04L9/3236 ,  G06T1/0028 ,  G06T2201/0051 ,  G06T2201/0061 ,  G06T2201/0083 ,  G06T2201/0201 ,  G06T2201/0202 ,  H04L9/3247 ,  H04L2209/56 ,  H04L2209/608 ,  H04L2209/805

Abstract: A method for producing an assured image acquires image data and segments the image data into one or more spatial regions. One or more quality measures is calculated from the image data that is within the one or more spatial regions. Secure assurance data is produced that is representative of the one or more quality measures and the image data. The secure assurance data is associated with the image data to produce the assured image.

Abstract translation: 用于产生确定图像的方法获取图像数据并将图像数据分割成一个或多个空间区域。 根据在一个或多个空间区域内的图像数据计算一个或多个质量测量。 产生代表一个或多个质量测量值和图像数据的安全保证数据。 安全保证数据与图像数据相关联以产生确保的图像。

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。