167 citations · 962 across the 54 of their papers we have counts for
5 papers · 1 filter
A radial version of the Central Limit Theorem
Kunal Narayan Chaudhury
In this note, we give a probabilistic interpretation of the Central Limit Theorem used for approximating isotropic Gaussians in [1].
Improvements on "Fast space-variant elliptical filtering using box splines"
Kunal N. Chaudhury, Sebanti Sanyal
It is well-known that box filters can be efficiently computed using pre-integrations and local finite-differences [Crow1984,Heckbert1986,Viola2001]. By generalizing this idea and b…
On the Hilbert transform of wavelets
Kunal Narayan Chaudhury, Michael Unser
A wavelet is a localized function having a prescribed number of vanishing moments. In this correspondence, we provide precise arguments as to why the Hilbert transform of a wavelet…
Constant-time filtering using shiftable kernels
Kunal Narayan Chaudhury
It was recently demonstrated in [5] that the non-linear bilateral filter [14] can be efficiently implemented using a constant-time or O(1) algorithm. At the heart of this algorithm…
Fast O(1) bilateral filtering using trigonometric range kernels
Kunal Narayan Chaudhury, Daniel Sage, Michael Unser
It is well-known that spatial averaging can be realized (in space or frequency domain) using algorithms whose complexity does not depend on the size or shape of the filter. These f…