slicer 的CropVolume模块

slicer 的CropVolume模块

1、各向同性参数设置
有参数及实现可知CropVolume 模块只能在各向同性时设置成三个方向间距一致缩放，或者在各向异性时，三个方向整倍数于原间距缩放。

parameterNode->SetIsotropicResampling(true);

各向同性

if (isotropicResampling)
    {
    double minSpacing = std::min(std::min(inputSpacing[0], inputSpacing[1]), inputSpacing[2]);
    outputSpacing[0] = minSpacing * spacingScale;
    outputSpacing[1] = minSpacing * spacingScale;
    outputSpacing[2] = minSpacing * spacingScale;
    }

各向异性

if (isotropicResampling)
    {
    double minSpacing = std::min(std::min(inputSpacing[0], inputSpacing[1]), inputSpacing[2]);
    outputSpacing[0] = minSpacing * spacingScale;
    outputSpacing[1] = minSpacing * spacingScale;
    outputSpacing[2] = minSpacing * spacingScale;
    }
  else
    {
    ……
    ……
    	outputSpacing[0] = inputSpacing[inputAxisIndexForROIAxis[0]] * spacingScale;
    	outputSpacing[1] = inputSpacing[inputAxisIndexForROIAxis[1]] * spacingScale;
   	 	outputSpacing[2] = inputSpacing[inputAxisIndexForROIAxis[2]] * spacingScale;
    }