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Image processing method for reducing noise in one image of a sequence of three temporal images and medical imaging apparatus for carrying out the method

机译:用于减少三个时间图像序列中的一个图像中的噪声的图像处理方法以及用于执行该方法的医学成像设备

摘要

A treatment process for images made up of triplets of temporal intensities, (Gt-1, Gt, Gt+1), obtained by previously smoothing three successive images (Ut-1, Jt, Jt+1), where the filtered image was (Jt). The three intensities are then tested to see which of two categories they fall in to and an optimum image obtained with reduced noise. The test (TEST) process checks for two cases. In the first the smoothed temporal intensity (Gt) is substantially different to the other two, so that it (Gt) is taken as the filtered value (Rt) in the central image (Jt). In the second case (Gt) is substantially the same as one or both of the other intensities. An averaging process (MEDIAN) is carried out to find the result (Rt) for the filtered value of the central image (Jt). The pre-smoothing of the 3 images is using a spatial filter (FMH-1D, FMH-2D).
机译:由时间强度三重态(Gt-1,Gt,Gt + 1)组成的图像的处理过程,该过程通过预先平滑三个连续图像(Ut-1,Jt,Jt + 1)获得,其中滤波后的图像为( Jt)。然后测试这三个强度,以查看它们属于两个类别中的哪个类别,并获得降低噪声的最佳图像。测试(TEST)流程检查两种情况。首先,平滑后的时间强度(Gt)与其他两个基本不同,因此将其(Gt)用作中心图像(Jt)中的滤波值(Rt)。在第二种情况下,(Gt)与其他强度之一或两者基本相同。进行平均处理(MEDIAN)以找到中央图像(Jt)的滤波值的结果(Rt)。使用空间滤波器(FMH-1D,FMH-2D)对3张图像进行预平滑。

著录项

  • 公开/公告号EP0926626A1

    专利类型

  • 公开/公告日1999-06-30

    原文格式PDF

  • 申请/专利权人 KONINKLIJKE PHILIPS ELECTRONICS N.V.;

    申请/专利号EP19980204269

  • 发明设计人 FLORENT RAOUL;

    申请日1998-12-16

  • 分类号G06T5/40;

  • 国家 EP

  • 入库时间 2022-08-22 02:18:33

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