Invention Application
US20110128435A1 IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD 有权
图像处理装置和图像处理方法

  • Patent Title: IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD
  • Patent Title (中): 图像处理装置和图像处理方法
  • Application No.: US12955703
    Application Date: 2010-11-29
  • Publication No.: US20110128435A1
    Publication Date: 2011-06-02
  • Inventor: Takeshi Ikeda
  • Applicant: Takeshi Ikeda
  • Applicant Address: JP Tokyo
  • Assignee: CANON KABUSHIKI KAISHA
  • Current Assignee: CANON KABUSHIKI KAISHA
  • Current Assignee Address: JP Tokyo
  • Priority: JP2009-273890 20091201
  • Main IPC: H04N5/235
  • IPC: H04N5/235
IMAGE PROCESSING APPARATUS AND IMAGE PROCESSING METHOD
Abstract:
An image processing apparatus includes a distribution detection unit configured to detect whether a luminance distribution on the screen changes to a hill-shaped form, based on a result of adding photometric values of each of divided photometry areas by rows and by columns, a difference calculation unit configured to calculate a luminance value difference between one portion of the screen and the peripheral portion thereof, a ratio calculating unit configured to calculate a ratio of pixels having a luminance value higher than or equal to a threshold value in the one portion, and a spotlight determination unit configured to determine whether a scene of the captured image is a spotlight scene according to a detection result of the distribution detection unit, calculation result of the difference calculation unit, and a calculation result of the ratio calculation unit.
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