Invention Grant
US08644640B2 Purple fringing artifact reduction within a digital image with guidance from a green channel 有权
在绿色通道的指导下,数字图像中的紫色边缘人造物减少

  • Patent Title: Purple fringing artifact reduction within a digital image with guidance from a green channel
  • Patent Title (中): 在绿色通道的指导下,数字图像中的紫色边缘人造物减少
  • Application No.: US12472565
    Application Date: 2009-05-27
  • Publication No.: US08644640B2
    Publication Date: 2014-02-04
  • Inventor: Denis Demandolx
  • Applicant: Denis Demandolx
  • Applicant Address: US WA Redmond
  • Assignee: Microsoft Corporation
  • Current Assignee: Microsoft Corporation
  • Current Assignee Address: US WA Redmond
  • Main IPC: G06K9/40
  • IPC: G06K9/40
Purple fringing artifact reduction within a digital image with guidance from a green channel
Abstract:
Methods and a processing device are provided for reducing purple fringing artifacts appearing in a digital image. A linear filter may be applied to a digital image to identify purplish candidate regions of pixels. Ones of pixels that are in any of the purplish candidate regions and are within a predefined distance of a high gradient/high contrast region may be identified as damaged pixels. A map of the damaged pixels may then be created, or formed. The damaged pixels may be reconstructed based on interpolation of values from undamaged pixels on a fringe boundary with guidance from a green channel. In various embodiments, the damaged pixels may be reconstructed based on a Poisson blending approach, an approximated Poisson blending approach, or a variety of approaches based on interpolation of values from undamaged pixels on a fringe boundary, with guidance from a green channel.
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