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US08649608B2 Feature value extracting device, object identification device, and feature value extracting method 有权
特征值提取装置，物体识别装置和特征值提取方法

  • Patent Title: Feature value extracting device, object identification device, and feature value extracting method
  • Patent Title (中): 特征值提取装置，物体识别装置和特征值提取方法
  • Application No.: US13128473
    Application Date: 2009-11-06
  • Publication No.: US08649608B2
    Publication Date: 2014-02-11
  • Inventor: Yunyun Cao
  • Applicant: Yunyun Cao
  • Applicant Address: JP Osaka
  • Assignee: Panasonic Corporation
  • Current Assignee: Panasonic Corporation
  • Current Assignee Address: JP Osaka
  • Agency: Greenblum & Bernstein, P.L.C.
  • Priority: JP2008-288864 20081111
  • International Application: PCT/JP2009/005920 WO 20091106
  • International Announcement: WO2010/055629 WO 20100520
  • Main IPC: G06K9/00
  • IPC: G06K9/00
Feature value extracting device, object identification device, and feature value extracting method
Abstract:
A feature calculator calculates the number of edge pixel pairs (three-dimensional histogram) defined by the edge direction of a predetermined pixel, the edge direction of an edge pixel present in a neighboring area of the predetermined pixel, and the spatial position relation between the predetermined pixel and the edge pixel present in the neighboring area of the predetermined pixel as a feature of an image. With this, the feature also represents the spatial relationship of the edges. Consequently, it is possible to also identify the difference of edge patterns due to the difference of the spatial relationships of the edges and increase the accuracy of identification of, for example, a portrait image.
Abstract(Chinese):

特征计算器计算由预定像素的边缘方向定义的边缘像素对（三维直方图）的数量，存在于预定像素的相邻区域中的边缘像素的边缘方向以及在预定像素的相邻区域中的空间位置关系 预定像素和存在于预定像素的相邻区域中的边缘像素作为图像的特征。 由此，该特征也表示边缘的空间关系。 因此，由于边缘的空间关系的差异，也可以识别边缘图案的差异，并提高例如肖像图像的识别精度。

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