Boundary Treatment for Young-van Vliet Recursive Zero-Mean Gabor Filtering

Recursive Gabor Filtering

In this paper, we present a stable, recursive algorithm for the Gabor filter that achieves—to within a multiplicative constant—the fastest possible implementation. For a signal consisting of samples, our implementation requires ( ) multiply-and-add (MADD) operations, that is, the number of computations per input sample is constant. Further, the complexity is independent of the values of and in ...

A Real-Time Gabor Primal Sketch for Visual Attention

We describe a fast algorithm for Gabor filtering, specially designed for multi-scale image representations. Our proposal is based on three facts: first, Gabor functions can be decomposed in gaussian convolutions and complex multiplications which allows the replacement of Gabor filters by more efficient gaussian filters; second, isotropic gaussian filtering is implemented by separable 1D horizon...

تشخیص چهره با استفاده از PCA و فیلتر گابور

Methods for face recognition which are based on face structure are among techniques without supervision and produce unfavorable results in the presence of linear changes in images. PCA is a linear transform and a powerful tool for data analysis but does not produce good results for face recognition when there are non-linear changes resulting from changes in position, intensity and gesture in th...

Recursive implementation of the Gaussian filter

Recursive filtering and smoothing for reciprocal Gaussian processes-pinned boundary case

AbstructThe least square estimation problem for pinned-to-zero discrete-index reciprocal Gaussian processes in additive white noise is . . . . 1), . . . , (T 2. l ) l t . (53) solved, thus completing and extending some previous results available in the literature. In particular, following the innovations approach a (finite) set of recursive equations is obtained for the filter and for the three...