Used to visualize a 1D/2D/3D filter.
For 1d filters:
Marks local filter maxima with a green '+' and minima with a red '+'.
Also shows the fft response of the filter.
For 2d filters:
Marks local filter maxima with a green '+' and minima with a red '+'.
Also shows the fft response of the filter. Can optionally also plot a
scanline through either center row/column.
For 3d filters:
Dark lobes correspond to negative areas. Surfaces shown are drawn at a
percentage of the peak filter response detemined by frac.
USAGE
filterVisualize( f, [show], [arg] )
INPUTS
f - filter to visualize
show - [1] figure to use for display (0->uses current)
arg - different meanding depending on dimension
d=1: [] not used
d=2: [''] 'row' OR 'col': display centeral row OR col line
d=3: [.1] frac of max value of f at which to draw surfaces
OUTPUTS
EXAMPLE
f=filterBinomial1d( 10, 0 ); filterVisualize( f, 1 ); %1d
f=filterDog2d( 15, 10, 1 ); filterVisualize( f, 2, 'row' ); %2d
f=filterDoog([51 51 99],[3 3 5],[1 2 3],0); filterVisualize(f,4,.1); %3d
See also FILTERGAUSS, FBVISUALIZE
Piotr's Computer Vision Matlab Toolbox Version 2.0
Copyright 2014 Piotr Dollar. [pdollar-at-gmail.com]
Licensed under the Simplified BSD License [see external/bsd.txt]