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9 papers found.
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Spatio-Temporal Scale Selection in Video Data

This work presents a theory and methodology for simultaneous detection of local spatial and temporal scales in video data. The underlying idea is that if we process video data by spatio-temporal receptive fields at multiple spatial and temporal scales, we would like to generate hypotheses about the spatial extent and the temporal duration of the underlying spatio-temporal image...

Temporal Scale Selection in Time-Causal Scale Space

When designing and developing scale selection mechanisms for generating hypotheses about characteristic scales in signals, it is essential that the selected scale levels reflect the extent of the underlying structures in the signal. This paper presents a theory and in-depth theoretical analysis about the scale selection properties of methods for automatically selecting local...

Time-Causal and Time-Recursive Spatio-Temporal Receptive Fields

We present an improved model and theory for time-causal and time-recursive spatio-temporal receptive fields, obtained by a combination of Gaussian receptive fields over the spatial domain and first-order integrators or equivalently truncated exponential filters coupled in cascade over the temporal domain. Compared to previous spatio-temporal scale-space formulations in terms of...

Image Matching Using Generalized Scale-Space Interest Points

Tony Lindeberg The performance of matching and object recognition methods based on interest points depends on both the properties of the underlying interest points and the choice of associated

Idealized Computational Models for Auditory Receptive Fields

We present a theory by which idealized models of auditory receptive fields can be derived in a principled axiomatic manner, from a set of structural properties to (i) enable invariance of receptive field responses under natural sound transformations and (ii) ensure internal consistency between spectro-temporal receptive fields at different temporal and spectral scales. For...

A computational theory of visual receptive fields

Tony Lindeberg 0 0 The support from the Swedish Research Council, Vetenskapsrdet (contract 2010-4766) and from the Royal Swedish Academy of Sciences as well as the Knut and Alice Wallenberg

Invariance of visual operations at the level of receptive fields

The brain is able to maintain a stable perception although the visual stimuli vary substantially on the retina due to geometric transformations and lighting variations in the environment. This paper presents a theory for achieving basic invariance properties already at the level of receptive fields. Specifically, the presented framework comprises (i) local scaling transformations...

Invariance of visual operations at the level of receptive fields

Tony Lindeberg 0 0 Department of Computational Biology, School of Computer Science and Communication, KTH Royal Institute of Technology , SE-100 44 Stockholm , Sweden Receptive field profiles

Scale Selection Properties of Generalized Scale-Space Interest Point Detectors

Tony Lindeberg 0 0 T. Lindeberg ( ) School of Computer Science and Communication, KTH Royal Institute of Technology , 100 44 Stockholm, Sweden Scale-invariant interest points have found several