公开(公告)号：US20140310314A1

公开(公告)日：2014-10-16

申请号：US14249929

申请日：2014-04-10

Applicant: Samsung Electronics Co., Ltd.

Inventor： Zhu Li ,  Abhishek Nagar ,  Gaurav Srivastava ,  Felix Carlos Fernandes

IPC: G06F17/30

CPC classification number: G06F16/583

Abstract: A method and apparatus include extracting a global descriptor from a query image with a plurality of segments. The method also includes identifying segments with a desirable discriminating potential by analyzing data of the plurality of segments based on an available image database. The method also includes creating a bitmask where the identified segments are active. The method also includes masking any segment of the plurality of segments of the global descriptor that are inactive according to the bitmaskA method includes extracting a global descriptor from a query image and identifying one or more reference global descriptors. The method also includes determining a distance between the global descriptor and each of the one or more reference global descriptors. In addition, the method includes, responsive to the distance satisfying a threshold, adding an image associated with each of the one or more reference global descriptors that satisfy the threshold to a list.

Abstract translation: 一种方法和装置包括从具有多个段的查询图像提取全局描述符。 该方法还包括基于可用图像数据库分析多个片段的数据来识别具有期望的鉴别潜力的片段。 该方法还包括创建一个位掩码，其中标识的段是活动的。 该方法还包括根据位掩码掩蔽全局描述符的多个段的不活动的任何段。方法包括从查询图像提取全局描述符并识别一个或多个参考全局描述符。 该方法还包括确定全局描述符与一个或多个参考全局描述符中的每一个之间的距离。 此外，该方法包括响应于满足阈值的距离，将与满足阈值的一个或多个参考全局描述符中的每一个相关联的图像添加到列表。

公开(公告)号：US20140198998A1

公开(公告)日：2014-07-17

申请号：US14151657

申请日：2014-01-09

Applicant: Samsung Electronics Co., Ltd.

Inventor： Gaurav Srivastava ,  Zhu Li ,  Abhishek Nagar ,  Ankur Saxena ,  Zhan Ma ,  Felix Carlos Fernandes

IPC: G06F17/30

CPC classification number: G06F16/5838

Abstract: A wireless communication device includes a processor configured to execute an image query. The image query utilizes cluster selection criteria for a cluster-aggregation based vectorization of a set of local features based on a quantity of top local features having the highest posteriori probability values. The cluster selection criterion is measured as the summation of the posteriori probability values of the top local features. The quantity of top local features is determined by a predetermined integer value greater than one.

Abstract translation: 无线通信设备包括被配置为执行图像查询的处理器。 基于具有最高后验概率值的顶部局部特征的量，图像查询利用基于聚类聚集的集群选择标准来矢量化一组局部特征。 集群选择标准被测量为顶部局部特征的后验概率值的总和。 顶部本地特征的数量由大于1的预定整数值确定。

公开(公告)号：US20140185941A1

公开(公告)日：2014-07-03

申请号：US14101047

申请日：2013-12-09

Applicant: Samsung Electronics Co., LTD

Inventor： Zhu Li ,  Xin Xin ,  Abhishek Nagar ,  Gaurav Srivastava ,  Kong Posh Bhat ,  Felix Carlos Fernandes

IPC: G06K9/46

CPC classification number: G06K9/6211 ,  G06K9/4671

Abstract: To improve feature selection accuracy during a visual search, interest points within a query image are two-way matched to features in an affine transformed image or otherwise transformed version of the query image. A user device implements a method for selecting local descriptors in the visual search. The method includes: detecting a first set of interest points for the original image; computing an affine transform matrix; computing a new image as a transformation of the original image using the affine transform matrix; detecting a second set of interest points from the and new image; performing a two-way matching between the first set of interest points and the second set of interest points; sorting matching pairs according to a specified self-matching score (SMS); assigning an infinite value to SMS of unmatched interest points from the original image; selecting the interest points based on SMS. Significant performance gains reduce false positive matches.

Abstract translation: 为了在视觉搜索期间提高特征选择精度，查询图像内的兴趣点与仿射变换图像中的特征或查询图像的其他变换版本进行双向匹配。 用户设备实现在视觉搜索中选择本地描述符的方法。 该方法包括：检测原始图像的第一组兴趣点; 计算仿射变换矩阵; 使用仿射变换矩阵计算新图像作为原始图像的变换; 从新图像检测第二组兴趣点; 执行第一组兴趣点与第二组兴趣点之间的双向匹配; 根据指定的自匹配分数（SMS）对匹配对进行排序; 从原始图像向无缝匹配的兴趣点的SMS分配无限值; 基于短信选择兴趣点。 显着的业绩增益减少假阳性匹配。

公开(公告)号：US09774865B2

公开(公告)日：2017-09-26

申请号：US14567517

申请日：2014-12-11

Applicant: Samsung Electronics Co., Ltd.

Inventor： Esmaeil Faramarzi ,  Felix Carlos Fernandes ,  Kyungmo Park

IPC: H04N7/18 ,  H04N19/137 ,  G06T3/40 ,  G06T5/00 ,  H04N19/513 ,  H04N19/117 ,  H04N19/132 ,  H04N19/182 ,  H04N19/85 ,  H04N19/59

CPC classification number: H04N19/137 ,  G06T3/4053 ,  G06T5/002 ,  G06T5/003 ,  G06T2207/10016 ,  G06T2207/20201 ,  H04N19/117 ,  H04N19/132 ,  H04N19/182 ,  H04N19/513 ,  H04N19/59 ,  H04N19/85

Abstract: A method for real-time multi-frame super resolution (SR) of video content is provided. The method includes receiving a bitstream including an encoded video, motion metadata for a plurality of blocks of a frame of video content, and parameters. The motion metadata is estimated from the original video before downsampling and encoding. The motion metadata is averaged over consecutive blocks. The method includes upscaling the motion metadata for the plurality of blocks. The method also includes upscaling the decoded video using the upscaled motion metadata. The method also includes deblurring and denoising the upscaled video.

公开(公告)号：US09256617B2

公开(公告)日：2016-02-09

申请号：US13929506

申请日：2013-06-27

Applicant: Samsung Electronics Co., LTD

Inventor： Ankur Saxena ,  Serhat Bucak ,  Abhishek Nagar ,  Felix Carlos Fernandes ,  Gaurav Srivastava

IPC: G06K9/00 ,  G06F17/30 ,  G06K9/46

CPC classification number: G06F17/3025 ,  G06K9/4652 ,  G06K9/4676

Abstract: A method comprises computing a color factor value indicating an amount of color gradients in at least one color channel from the query image. The method comprises combining the color-keypoints with the gray-keypoints when the color factor value is greater than a threshold. A method for performing a visual search comprises extracting a plurality of local descriptors from a query image and then selecting a subset of them based on various criteria's such as visual meaning score. A method comprises aggregating each mean vector for each visual codeword from distances between each visual codeword and local descriptors. The method comprises aggregating variance vector for each visual codeword from the distance between each visual codeword, and local descriptors. The method comprises transmitting aggregated mean vector information and aggregated variance vector information to a search server for efficient image retrieval.

Abstract translation: 一种方法包括计算指示来自查询图像的至少一个颜色通道中的颜色渐变量的颜色因子值。 该方法包括当颜色因子值大于阈值时将颜色关键点与灰色关键点组合。 用于执行视觉搜索的方法包括从查询图像中提取多个局部描述符，然后基于诸如视觉含义分数的各种标准来选择它们的子集。 一种方法包括从每个视觉码字和本地描述符之间的距离聚合每个可视码字的每个平均向量。 该方法包括从每个视觉码字与本地描述符之间的距离聚集每个可视码字的方差向量。 该方法包括向搜索服务器发送聚合的平均向量信息和聚合的方差向量信息以获得有效的图像检索。

公开(公告)号：US20140016863A1

公开(公告)日：2014-01-16

申请号：US13929506

申请日：2013-06-27

Applicant: Samsung Electronics Co., LTD

Inventor： Ankur Saxena ,  Serhat Bucak ,  Abhishek Nagar ,  Felix Carlos Fernandes ,  Gaurav Srivastava

IPC: G06F17/30 ,  G06K9/46

CPC classification number: G06F17/3025 ,  G06K9/4652 ,  G06K9/4676

Abstract: A method comprises computing a color factor value indicating an amount of color gradients in at least one color channel from the query image. The method comprises combining the color-keypoints with the gray-keypoints when the color factor value is greater than a threshold. A method for performing a visual search comprises extracting a plurality of local descriptors from a query image and then selecting a subset of them based on various criteria's such as visual meaning score. A method comprises aggregating each mean vector for each visual codeword from distances between each visual codeword and local descriptors. The method comprises aggregating variance vector for each visual codeword from the distance between each visual codeword, and local descriptors. The method comprises transmitting aggregated mean vector information and aggregated variance vector information to a search server for efficient image retrieval.

Abstract translation: 一种方法包括计算指示来自查询图像的至少一个颜色通道中的颜色渐变量的颜色因子值。 该方法包括当颜色因子值大于阈值时将颜色关键点与灰色关键点组合。 用于执行视觉搜索的方法包括从查询图像中提取多个局部描述符，然后基于诸如视觉含义分数的各种标准来选择它们的子集。 一种方法包括从每个视觉码字和本地描述符之间的距离聚合每个可视码字的每个平均向量。 该方法包括从每个视觉码字与本地描述符之间的距离聚集每个可视码字的方差向量。 该方法包括向搜索服务器发送聚合的平均向量信息和聚合的方差向量信息以获得有效的图像检索。