发明授权
US08442340B2 Method of generating a multiscale contrast enhanced image 有权
生成多尺度对比度增强图像的方法

  • 专利标题: Method of generating a multiscale contrast enhanced image
  • 专利标题(中): 生成多尺度对比度增强图像的方法
  • 申请号: US12681791
    申请日: 2008-10-02
  • 公开(公告)号: US08442340B2
    公开(公告)日: 2013-05-14
  • 发明人: Tom BertensPieter Vuylsteke
  • 申请人: Tom BertensPieter Vuylsteke
  • 申请人地址: BE Mortsel
  • 专利权人: Agfa HealthCare NV
  • 当前专利权人: Agfa HealthCare NV
  • 当前专利权人地址: BE Mortsel
  • 代理机构: Houston & Associates, LLP
  • 优先权: EP07118032 20071008
  • 国际申请: PCT/EP2008/063235 WO 20081002
  • 国际公布: WO2009/047208 WO 20090416
  • 主分类号: G06K9/40
  • IPC分类号: G06K9/40
Method of generating a multiscale contrast enhanced image
摘要:
At least one approximation image is created of the image at one or multiple scales. Translation difference images are created by pixel-wise subtracting the values of an approximation image at scale s and the values of a translated version of the approximation image. A non-linear modification is applied to the values of the translation difference image (s) and at least one enhanced center difference image at a specific scale is computed by combining the modified translation difference images at that scale or a smaller scale with weights Wi,j. An enhanced image is computed by applying a reconstruction algorithm to the enhanced center difference images. The non-linear modification of the values of the translation difference images is steered by the values of an orientation map which comprises for each pixel a local direction of interest. In addition or alternatively, at least one enhanced center difference image is computed by anisotropic weighing of the enhanced translation differences with weights steered by the orientation map.
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