Impulse response of a filter
Posted: 2011-12-26T13:38:35-07:00
It is easy to plot a filter function:
http://imagemagick.org/discourse-server ... 007#p79378
Is it as easy to plot (slices of) the impulse response (that is, what one gets by enlarging "a lot" an image which has one pixel equal to 1 and all the others equal to 0), without clipping?
When the filter defines a partition of unity, there is no difference between the two plots (at least in 1D). But not otherwise.
In 2D, a coutour plot with labeled levels would do. Or else, slices with gnuplot.
(This is something I could figure out myself I'm pretty sure, but if someone knows, I'd rather not reinvent the wheel.)
http://imagemagick.org/discourse-server ... 007#p79378
Is it as easy to plot (slices of) the impulse response (that is, what one gets by enlarging "a lot" an image which has one pixel equal to 1 and all the others equal to 0), without clipping?
When the filter defines a partition of unity, there is no difference between the two plots (at least in 1D). But not otherwise.
In 2D, a coutour plot with labeled levels would do. Or else, slices with gnuplot.
(This is something I could figure out myself I'm pretty sure, but if someone knows, I'd rather not reinvent the wheel.)