公开(公告)号：US20150036933A1

公开(公告)日：2015-02-05

申请号：US14092587

申请日：2013-11-27

申请人： PEKING UNIVERSITY FOUNDER GROUP CO., LTD. ,  PEKING UNIVERSITY ,  BEIJING FOUNDER APABI TECHNOLOGY LTD.

发明人： Yan LIU ,  Xiaoqing LV ,  Jianbo XU ,  Zhi TANG

IPC分类号： G06K9/62 ,  G06K9/00

CPC分类号： G06K9/6214 ,  G06K9/0055 ,  G06K9/6211 ,  G06K9/6215 ,  G06K2009/6213

摘要： A method and apparatus for matching key pixels of images and a method and apparatus for matching images are disclosed. The method for matching key pixels of images includes: determining, for a key pixel to be matched of a first image, a first eigenvector, in a set of eigenvectors of a second image, matching an eigenvector of the key pixel to be matched; determining a second eigenvector, in a set of eigenvectors of the first image, matching the first eigenvector; and determining the key pixel to be matched and a key pixel corresponding to the first eigenvector as a pair of matching pixels when a coordinate vector of the key pixel to be matched is the same as a coordinate vector of a key pixel corresponding to the second eigenvector.

摘要翻译： 公开了一种用于匹配图像的关键像素的方法和装置以及用于匹配图像的方法和装置。 用于匹配图像的关键像素的方法包括：对于要匹配的第一图像的关键像素，确定第二图像的一组特征向量中的第一特征向量，以匹配要匹配的关键像素的特征向量; 在第一图像的一组特征向量中确定与第一特征向量匹配的第二特征向量; 以及当要匹配的关键像素的坐标矢量与对应于第二特征向量的关键像素的坐标矢量相同时，将要匹配的关键像素和与第一特征向量相对应的关键像素确定为一对匹配像素 。

公开(公告)号：US20140334727A1

公开(公告)日：2014-11-13

申请号：US14092621

申请日：2013-11-27

申请人： PEKING UNIVERSITY FOUNDER GROUP CO., LTD. ,  PEKING UNIVERSITY ,  BEIJING FOUNDER APABI TECHNOLOGY LTD.

发明人： Yan LIU ,  Xiaoqing LV ,  Jianbo XU ,  Zhi TANG ,  Xiaoyu CUI

IPC分类号： H04N1/60

CPC分类号： G06T11/001

摘要： A method and apparatus for describing an image are disclosed. The method for describing an image according to an embodiment of the invention includes: transforming an image from a BGR color space into a Gaussian derivative color model; and transforming the image from the Gaussian derivative color model into an optical reflection invariant color space, wherein the process of transforming the image from the Gaussian derivative color model into the optical reflection invariant color space includes: determining, for each pixel on the image, color channels of the pixel corresponding to the optical reflection invariant color space according to a first coefficient and a second coefficient of the pixel in the Gaussian derivative color model. The embodiments of the invention can alleviate an error in a description of an image of the same contents but with a significant change in color.

摘要翻译： 公开了一种用于描述图像的方法和装置。 根据本发明的实施例的用于描述图像的方法包括：将图像从BGR颜色空间变换为高斯导数颜色模型; 以及将所述图像从所述高斯导数颜色模型转换为光学反射不变颜色空间，其中将所述图像从所述高斯导数颜色模型变换为所述光学反射不变颜色空间的处理包括：针对所述图像上的每个像素确定颜色 根据第一系数和高斯导数颜色模型中的像素的第二系数，对应于光学反射不变色空间的像素的通道。 本发明的实施例可以减轻对相同内容的图像的描述中的错误，但是具有显着的颜色变化。

公开(公告)号：US20150067887A1

公开(公告)日：2015-03-05

申请号：US14535144

申请日：2014-11-06

申请人： PEKING UNIVERSITY FOUNDER GROUP CO., LTD. ,  PEKING UNIVERSITY ,  BEIJING FOUNDER APABI TECHNOLOGY LTD.

发明人： Yi WANG ,  Zhi TANG ,  Dengsha YUAN ,  Xuefeng YANG

IPC分类号： G06F21/10

CPC分类号： G06F21/10 ,  G06F21/57 ,  G06F2221/2137 ,  G06F2221/2151

摘要： A digital content rights management method and system belongs to the digital content rights management technique field. The method of the invention includes the steps: registering the system, generating the time stamp, verifying the time stamp when the system starts up, acquiring the certificate, verifying the time before accessing the digital content. The system of the invention comprises a device for accessing the digital content and a server, wherein the device for accessing the digital content comprises: a registering module, a time stamp generating module, a time stamp verification module, a certificate of authorization acquiring module, and a time verification module. The method and system have solved the problem that the digital content can still be used beyond the time limit.

摘要翻译： 数字内容权限管理方法和系统属于数字内容权限管理技术领域。 本发明的方法包括以下步骤：登录系统，生成时间戳，验证系统启动时的时间戳，获取证书，验证访问数字内容之前的时间。 本发明的系统包括用于访问数字内容的设备和服务器，其中用于访问数字内容的设备包括：注册模块，时间戳生成模块，时间戳验证模块，授权获取模块证书， 和时间验证模块。 该方法和系统解决了数字内容超出时限的问题。

公开(公告)号：US20130174282A1

公开(公告)日：2013-07-04

申请号：US13729593

申请日：2012-12-28

申请人： PEKING UNIVERSITY FOUNDER GROUP CO., LTD. ,  BEIJING FOUNDER APABI TECHNOLOGY LTD. ,  PEKING UNIVERSITY ,  Founder Information Industry Holdings Co., Ltd.

发明人： Xiaoyu CUI ,  Zhi TANG

IPC分类号： G06F21/33

CPC分类号： G06F21/33 ,  G06F21/10

摘要： A digital right management method, including: encrypting, by a first user equipment which has access right to shared digital contents, a key of the digital contents with at least an equipment key of a second user equipment intended to share the digital contents to generate a ciphertext of the key of the digital contents; generating, by the first user equipment, from the ciphertext a new authorization certificate corresponding to the digital contents; and transmitting, by the first user equipment, the new authorization certificate and the digital contents to the second user equipment to instruct the second user equipment to share the digital contents in accordance with the new authorization certificate.

摘要翻译： 一种数字权利管理方法，包括：通过具有共享数字内容访问权限的第一用户设备对至少具有共享数字内容的第二用户设备的设备密钥的数字内容的密钥加密，以生成 数字内容密钥的密文; 由所述第一用户设备从所述密文生成与所述数字内容相对应的新授权证书; 以及由所述第一用户设备将所述新授权证书和所述数字内容发送给所述第二用户设备，以指示所述第二用户设备根据所述新的授权证书共享所述数字内容。

公开(公告)号：US20140351320A1

公开(公告)日：2014-11-27

申请号：US14092669

申请日：2013-11-27

申请人： Peking University Founder Group Co., Ltd. ,  Peking University ,  Beijing Founder Apabi Technology Ltd.

发明人： Fei GAO ,  Li LIU ,  Xiaoyu CUI ,  Zhi TANG

IPC分类号： H04L29/06

CPC分类号： H04L67/1095

摘要： Embodiments of the invention disclose a method, system and apparatus for coordinated processing of a document, relate to the field of data processing and are intended to address the problem of how multiple clients perform coordinated operations on the document. In the invention, a server detects a document operation on a first client among respective clients at a preset frequency and sends a detection result to a second client other than the first client; and the second client displays the detection result. Apparently this solution addresses the problem of how the multiple clients perform coordinated operations on the document.

摘要翻译： 本发明的实施例公开了一种用于协调处理文档的方法，系统和装置，涉及数据处理领域，并且旨在解决多个客户端如何对文档执行协调操作的问题。 在本发明中，服务器以预设频率检测各客户端中的第一客户端上的文档操作，并将检测结果发送到第一客户端以外的第二客户端; 并且第二客户端显示检测结果。 显然，该解决方案解决了多个客户端如何对文档执行协调操作的问题。