MATLAB Function Reference

smooth3

Smooth 3-D data

Syntax

• W = smooth3(V)
  W = smooth3(V,'filter')
  W = smooth3(V,'filter',size)
  W = smooth3(V,'filter',size,sd)
  

Description

W = smooth3(V) smooths the input data V and returns the smoothed data in W.

W = smooth3(V,'filter') filter determines the convolution kernel and can be the strings:

• 'gaussian'
• 'box' (default)

W = smooth3(V,'filter',size) sets the size of the convolution kernel (default is [3 3 3]). If size is scalar, then size is interpreted as [size, size, size].

W = smooth3(V,'filter',size,sd) sets an attribute of the convolution kernel. When filter is gaussian, sd is the standard deviation (default is .65).

Examples

This example smooths some random 3-D data and then creates an isosurface with end caps.

• rand('seed',0)
  data = rand(10,10,10);
  data = smooth3(data,'box',5);
  p1 = patch(isosurface(data,.5), ...
     'FaceColor','blue','EdgeColor','none');
  p2 = patch(isocaps(data,.5), ...
      'FaceColor','interp','EdgeColor','none');
  isonormals(data,p1)
  view(3); axis vis3d tight
  camlight; lighting phong
  
  
  

See Also

isocaps, isonormals, isosurface, patch

Volume Visualization for related functions

See Displaying an Isosurface for another example

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