Invention Grant
US08639056B2 Contrast enhancement 失效
对比度增强

  • Patent Title: Contrast enhancement
  • Patent Title (中): 对比度增强
  • Application No.: US13376920
    Application Date: 2010-06-28
  • Publication No.: US08639056B2
    Publication Date: 2014-01-28
  • Inventor: Jiefu ZhaiJoan Llach
  • Applicant: Jiefu ZhaiJoan Llach
  • Applicant Address: FR Issy les Moulineaux
  • Assignee: Thomson Licensing
  • Current Assignee: Thomson Licensing
  • Current Assignee Address: FR Issy les Moulineaux
  • Agent Robert D. Shedd; Richard LaPeruta
  • International Application: PCT/US2010/001848 WO 20100628
  • International Announcement: WO2011/008239 WO 20110120
  • Main IPC: G06K9/40
  • IPC: G06K9/40
Contrast enhancement
Abstract:
A method according to the invention enhances contrast of an image by accessing an original image, and establishing, assigning, or initializing pixel values and pixel coordinates of pixels of the image. Then, a Laplacian pyramid having an integral number of levels is generated for the image. A contrast boost pyramid is generated and applied to the Laplacian pyramid to obtain a modified Laplacian pyramid wherein values in the levels of the Laplacian pyramid are enhanced. An enhanced image is then constructed from the modified Laplacian pyramid.
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