公开(公告)号：WO2014007586A1

公开(公告)日：2014-01-09

申请号：PCT/KR2013/006017

申请日：2013-07-05

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： SAXENA, Ankur ,  NAGAR, Abhishek ,  FERNANDES, Felix Carlos ,  SRIVASTAVA, Gaurav ,  BUCAK, Serhat

IPC: G06T1/00

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得分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与本地描述符之间的距离聚合每个可视码字的每个平均矢量。 该方法包括从每个视觉码字与本地描述符之间的距离聚合每个视觉码字的方差矢量。 该方法包括向搜索服务器发送聚合的平均矢量信息和聚合的方差矢量信息以获得有效的图像检索。