Re: [darktable-dev] How does the Gaussian filter work?

2018-10-15 Thread Heiko Bauke
Dear Johannes, Am 15.10.18 um 10:08 schrieb johannes hanika: this is an IIR filter (infinite impulse response, as opposed to the straight forward FIR, finite impulse response, which would be for instance a 5-tap b-spline filter) which approximates a gaussian. it's especially well suited for larg

Re: [darktable-dev] How does the Gaussian filter work?

2018-10-15 Thread johannes hanika
heya, this is an IIR filter (infinite impulse response, as opposed to the straight forward FIR, finite impulse response, which would be for instance a 5-tap b-spline filter) which approximates a gaussian. it's especially well suited for large filter supports. why do you need to know? for sports or