A spatio-frequency trade-off scale for scale-space filtering |
| |
Authors: | Florack L |
| |
Affiliation: | Dept. of Math., Utrecht Univ.; |
| |
Abstract: | We study implementation issues for spatial convolution filters and their Fourier alternative, with the aim to optimize the accuracy of filter output. We focus on Gaussian scale-space filters and show that there exists a trade-off scale that subdivides the available scale range into two subintervals of equal length. Below this trade-off scale Fourier filtering yields more accurate results than spatial filtering; above it is the other way around. This should be contrasted with demands of computational speed, which show the opposite tenet |
| |
Keywords: | |
|
|