公开(公告)号：US09202257B2

公开(公告)日：2015-12-01

申请号：US14494303

申请日：2014-09-23

Applicant: Infosys Limited

Inventor： Sachin Mehta ,  Rajarathnam Nallusamy

IPC: G06K9/36 ,  G06T9/00 ,  G06T1/00 ,  G06K9/00

CPC classification number: G06T1/0021 ,  G06K9/00765 ,  G06T1/005 ,  G06T1/0085 ,  G06T2201/0052 ,  G06T2201/0064 ,  G06T2201/0081 ,  G06T2207/10012

Abstract: A method, non-transitory computer readable medium, and video analyzing computing device that generates a scene averaged frame value for each scene of an original video and a each scene of a resembling video. Each of a subset of the scenes of the resembling video is mapped to a corresponding scene of the original video based on a comparison of the scene averaged frame values. A singular value score is generated for each frame of each of the subset of scenes of the resembling video and each frame of the corresponding one of the scenes of the original video is generated. Matching one(s) of the one or more frames of each of the at least a subset of scenes of the resembling video is identified based on a comparison of at least a subset of the singular value scores. A first watermark is extracted from the identified matching frames.

Abstract translation: 一种方法，非暂时计算机可读介质和视频分析计算设备，其为原始视频和类似视频的每个场景的每个场景生成场景平均帧值。 基于场景平均帧值的比较，将类似视频的场景的子集中的每一个映射到原始视频的相应场景。 对类似视频的场景子集的每个帧的每帧生成奇异值分数，并且生成原始视频的相应一个场景的每个帧。 基于奇异值分数的至少一个子集的比较来识别类似视频的至少一个子集的每一个的一个或多个帧的匹配一个或多个帧。 从所识别的匹配帧中提取第一水印。

公开(公告)号：US09355438B2

公开(公告)日：2016-05-31

申请号：US14596986

申请日：2015-01-14

Applicant: Infosys Limited

Inventor： Sachin Mehta ,  Rajarathnam Nallusamy

IPC: G06K9/40 ,  G06T5/00 ,  G06T1/00 ,  G06T3/00 ,  G06T5/50

CPC classification number: G06T5/006 ,  G06T1/0064 ,  G06T3/0006 ,  G06T5/50 ,  G06T2207/10016

Abstract: The geometric distortions of videos and images are corrected wherein a plurality of geometrically distorted frames are mapped with a plurality of original frames of the video content. Further, one or more features associated with the mapped frames are identified as insensitive to the one or more geometric distortions. One or more features of the mapped frames are further mapped with original frames based on a predefined similarity threshold and thereafter one or more geometric distortion parameters are determined. Furthermore, a frame level average distortion and a video level average distortion of each of the one or more geometric distortion parameters are determined, based on which the one or more geometric distortions of the video content are corrected.

Abstract translation: 校正视频和图像的几何失真，其中多个几何失真的帧与视频内容的多个原始帧映射。 此外，与映射的帧相关联的一个或多个特征被识别为对一个或多个几何失真不敏感。 基于预定义的相似性阈值，映射的帧的一个或多个特征进一步与原始帧进行映射，此后确定一个或多个几何失真参数。 此外，确定一个或多个几何失真参数中的每一个的帧级平均失真和视频电平平均失真，基于此校正视频内容的一个或多个几何失真。

公开(公告)号：US20150228045A1

公开(公告)日：2015-08-13

申请号：US14493782

申请日：2014-09-23

Applicant: Infosys Limited

Inventor： Sachin Mehta ,  Rajarathnam Nallusamy

IPC: G06T1/00 ,  G06T3/40 ,  G06T7/00 ,  H04N1/32

CPC classification number: G06T1/0064 ,  G06T1/0021 ,  G06T2201/0061 ,  G06T2201/0062 ,  G06T2210/22 ,  H04N1/32229 ,  H04N1/3232 ,  H04N1/32352 ,  H04N2201/3236

Abstract: Method, apparatus and non-transitory computer readable medium for embedding and extracting a watermark in a text document using digital watermarking processes is disclosed. When the text document is watermarked, the following steps are performed. The pages of the text document are transformed into corresponding images. Then, the margins on each of the images are detected and cropped to generate the cropped images. The cropped images are segmented into blocks among which some blocks are selected based on content of each block. The watermark is embedded in the selected blocks using a digital watermarking process. When the watermark from the watermarked text document is extracted, the watermark-embedding process is referred to determine the block information, for selecting each block of a watermarked text document, from where the watermark needs to be extracted.

Abstract translation: 公开了一种使用数字水印处理在文本文档中嵌入和提取水印的方法，装置和非暂时计算机可读介质。 当文本文档加水印时，执行以下步骤。 文本文档的页面被转换成相应的图像。 然后，检测并裁剪每个图像上的边距以生成裁剪后的图像。 裁剪的图像被分割成块，其中根据每个块的内容选择一些块。 使用数字水印处理将水印嵌入在所选择的块中。 当从水印文本文档中提取水印时，参考水印嵌入处理来确定块信息，用于选择水印需要被提取的水印文本文档的每个块。

公开(公告)号：US20150086067A1

公开(公告)日：2015-03-26

申请号：US14491626

申请日：2014-09-19

Applicant: Infosys Limited

Inventor： Sachin Mehta ,  Rajarathnam Nallusamy

IPC: G06T1/00

CPC classification number: G06T1/0085 ,  G06T1/0071 ,  G06T2201/0081

Abstract: A method, device and non-transitory computer readable medium for scene based video watermarking. Methods are disclosed to detect the scenes inside the video. Disclosed devices and methods are capable of scene change detection for both, gradual and abrupt scenes. Methods are also disclosed to group logical scenes in a video. The disclosed methods are aided with methods to reduce the computational time taken for scene change detection. Watermarks are created and segmented using a plurality of unique identifiers to limit any unauthorized use of the video.

Abstract translation: 一种用于基于场景的视频水印的方法，设备和非暂时计算机可读介质。 公开了用于检测视频内的场景的方法。 公开的设备和方法能够对于逐渐和突然的场景进行场景变化检测。 还公开了对视频中的逻辑场景进行分组的方法。 所公开的方法有助于减少场景变化检测所花费的计算时间的方法。 使用多个唯一标识符创建和分段水印，以限制视频的任何未经授权的使用。

公开(公告)号：US09646358B2

公开(公告)日：2017-05-09

申请号：US14491626

申请日：2014-09-19

Applicant: Infosys Limited

Inventor： Sachin Mehta ,  Rajarathnam Nallusamy

IPC: G06K9/00 ,  G06T1/00

CPC classification number: G06T1/0085 ,  G06T1/0071 ,  G06T2201/0081

Abstract: A method, device and non-transitory computer readable medium for scene based video watermarking. Methods are disclosed to detect the scenes inside the video. Disclosed devices and methods are capable of scene change detection for both, gradual and abrupt scenes. Methods are also disclosed to group logical scenes in a video. The disclosed methods are aided with methods to reduce the computational time taken for scene change detection. Watermarks are created and segmented using a plurality of unique identifiers to limit any unauthorized use of the video.

公开(公告)号：US20150199798A1

公开(公告)日：2015-07-16

申请号：US14596986

申请日：2015-01-14

Applicant: Infosys Limited

Inventor： Sachin Mehta ,  Rajarathnam Nallusamy

IPC: G06T5/00 ,  G06T7/00 ,  G06T7/60

CPC classification number: G06T5/006 ,  G06T1/0064 ,  G06T3/0006 ,  G06T5/50 ,  G06T2207/10016

Abstract: The technique relates to a system and method for correcting geometric distortions in videos and images. To correct the one or more geometric distortions in videos, the frames of the original and distorted video are mapped at the beginning and then the features associated with the mapped frames which are insensitive to geometric distortions are identified. In case of correcting geometric distortions in images, frame mapping is not required and thus the process starts from identifying the features insensitive to geometric distortions in the original image and distorted image. Then, the geometric distortion parameters are identified from the mapped features. After that, a frame level and video level average distortion of the geometric distortion parameters are determined. Finally, the geometric distortions are corrected based on the frame level and video level average distortion value.

Abstract translation: 该技术涉及用于校正视频和图像中的几何失真的系统和方法。 为了校正视频中的一个或多个几何失真，原始和失真视频的帧在开始时映射，然后识别与对几何失真不敏感的映射帧相关联的特征。 在校正图像中的几何失真的情况下，不需要帧映射，因此该过程从识别对原始图像和失真图像中的几何失真不敏感的特征开始。 然后，从映射的特征识别几何失真参数。 之后，确定几何失真参数的帧级和视频级平均失真。 最后，基于帧级和视频级平均失真值校正几何失真。

公开(公告)号：US20150170312A1

公开(公告)日：2015-06-18

申请号：US14494303

申请日：2014-09-23

Applicant: Infosys Limited

Inventor： Sachin Mehta ,  Rajarathnam Nallusamy

IPC: G06T1/00

CPC classification number: G06T1/0021 ,  G06K9/00765 ,  G06T1/005 ,  G06T1/0085 ,  G06T2201/0052 ,  G06T2201/0064 ,  G06T2201/0081 ,  G06T2207/10012

Abstract: A method, non-transitory computer readable medium, and video analyzing computing device that generates a scene averaged frame value for each scene of an original video and a each scene of a resembling video. Each of a subset of the scenes of the resembling video is mapped to a corresponding scene of the original video based on a comparison of the scene averaged frame values. A singular value score is generated for each frame of each of the subset of scenes of the resembling video and each frame of the corresponding one of the scenes of the original video is generated. Matching one(s) of the one or more frames of each of the at least a subset of scenes of the resembling video is identified based on a comparison of at least a subset of the singular value scores. A first watermark is extracted from the identified matching frames.

Abstract translation: 一种方法，非暂时计算机可读介质和视频分析计算设备，其为原始视频和类似视频的每个场景的每个场景生成场景平均帧值。 基于场景平均帧值的比较，将类似视频的场景的子集中的每一个映射到原始视频的相应场景。 对类似视频的场景子集的每个帧的每帧生成奇异值分数，并且生成原始视频的相应一个场景的每个帧。 基于奇异值分数的至少一个子集的比较来识别类似视频的至少一个子集的每一个的一个或多个帧的匹配一个或多个帧。 从所识别的匹配帧中提取第一水印。