Invention Grant
US09087382B2 Zone-based tone mapping 有权
基于区域的色调映射

  • Patent Title: Zone-based tone mapping
  • Patent Title (中): 基于区域的色调映射
  • Application No.: US13381224
    Application Date: 2010-06-29
  • Publication No.: US09087382B2
    Publication Date: 2015-07-21
  • 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/US2010/001863 WO 20100629
  • International Announcement: WO2011/002505 WO 20110106
  • Main IPC: G09G5/02
  • IPC: G09G5/02 G06T5/00
Zone-based tone mapping
Abstract:
A method of tone mapping high dynamic range images for display on low dynamic range displays wherein a high dynamic range image is first accessed. The high dynamic range image is segmented into different regions such that each region is represented by a matrix, where each element of the matrix is a weight or probability of a pixel. An exposure of each region is determined or calculated and the exposure values are applied to the regions responsive to the weight or probability. The different regions are then fused together to obtain a final tone mapped image.
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