## 715 Citations

Vector Field Analysis for Oriented Patterns

- Computer ScienceIEEE Trans. Pattern Anal. Mach. Intell.
- 1994

A weighted linear estimator is developed to estimate linear phase portraits, using only the flow orientation, and a classification scheme for planar first-orderphase portraits, based on their local properties: curl, divergence, and deformation is developed.

Vector field analysis for oriented patterns

- PhysicsProceedings 1992 IEEE Computer Society Conference on Computer Vision and Pattern Recognition
- 1992

A method based on the properties of orientation fields is presented for the estimation of a set of symbolic descriptors from nondegenerate linear orientation fields, modeled by two-dimensional…

Estimators for Orientation and Anisotropy in Digitized Images

- Geology
- 1995

This paper describes a technique for characterization and segmentation of anisotropic patterns that exhibit a single local orientation. Using Gaussian derivatives we construct a gradient-square…

Computing oriented texture fields

- Computer ScienceCVPR 1989
- 1989

A novel algorithm for computing the orientation field for a flowlike texture that is provably optimal in estimating the local orientations of an oriented texture and a measure of coherence which is based on the use of the angle and coherence images as intrinsic images.

Computerized Flow Field Analysis: Oriented Texture Fields

- MathematicsIEEE Trans. Pattern Anal. Mach. Intell.
- 1992

The authors use the geometric theory of differential equations to derive a symbol set based on the visual appearance of phase portraits which are a geometric representation of the solution curves of a system of differential equation.

Oriented Patterns Synthesis

- Computer Science
- 2007

This paper exposes two models for analyzing and synthesizing natural textures that exhibit a local anisotropy and proposes a statistical model that captures the variations of the orientation over a tensor domain.

On the perceptual organization of texture and shading flows: from a geometrical model to coherence computation

- Computer ScienceProceedings of the 2001 IEEE Computer Society Conference on Computer Vision and Pattern Recognition. CVPR 2001
- 2001

It is shown how basic theoretical considerations lead to a unique model for the local behavior of the flow and allow for the specification of consistency constraints between nearby measurements for the computation of globally coherent structure via neighborhood relationships.

Pattern Orientation and Texture Symmetry

- Computer ScienceCAIP
- 1995

A new method for assessing pattern anisotropy via texture symmetry using the spatial dependence of an extended spatial gray-level difference feature to yield an interaction symmetry map which reflects the symmetry of both short- and long-range pixel interactions.

Pattern Orientation and Texture Symmetry

- Computer Science
- 1995

A new method for assessing pattern anisotropy via texture symmetry using the spatial dependence of an extended spatial gray-level difference feature to yield an interaction symmetry map which reflects the symmetry of both shortand long-range pixel interactions.

## References

SHOWING 1-10 OF 20 REFERENCES

Theory of edge detection

- MathematicsProceedings of the Royal Society of London. Series B. Biological Sciences
- 1980

The theory of edge detection explains several basic psychophysical findings, and the operation of forming oriented zero-crossing segments from the output of centre-surround ∇2G filters acting on the image forms the basis for a physiological model of simple cells.

Early processing of visual information.

- Computer SciencePhilosophical transactions of the Royal Society of London. Series B, Biological sciences
- 1976

It is argued that "non-attentive" vision is in practice implemented by these grouping operations and first order discriminations acting on the primal sketch, and implies that such knowledge should influence the control of, rather than interfering with, the actual data-processing that is taking place lower down.

RECOVERING INTRINSIC SCENE CHARACTERISTICS FROM IMAGES

- Computer Science
- 1978

We suggest that an appropriate role of early visual processing is to describe a scene in terms of intrinsic (vertical) characteristics -- such as range, orientation, reflectance, and incident…

Pyramidal parametrics

- GeologySIGGRAPH
- 1983

This paper advances a “pyramidal parametric” prefiltering and sampling geometry which minimizes aliasing effects and assures continuity within and between target images.

Fast, Hierarchical Correlations with Gaussian-Like Kernels

- Computer Science
- 1980

A new method for computing correlations which is particularly well suited for image processing, typically requiring two or three orders of magnitude fewer computational steps than direct correlation or correlation computed in the spatial frequency domain using the Fast Fourier transform.

Computational and Psychophysical Experiments in Grouping: Early Orientation Selection

- Psychology
- 1983

A computational theory of human stereo vision.

- PhysicsProceedings of the Royal Society of London. Series B, Biological sciences
- 1979

Receptive fields, binocular interaction and functional architecture in the cat's visual cortex

- BiologyThe Journal of physiology
- 1962

This method is used to examine receptive fields of a more complex type and to make additional observations on binocular interaction and this approach is necessary in order to understand the behaviour of individual cells, but it fails to deal with the problem of the relationship of one cell to its neighbours.

Quantitative studies of single-cell properties in monkey striate cortex. II. Orientation specificity and ocular dominance.

- BiologyJournal of neurophysiology
- 1976

Orientation selectivity and direction selectivity are independent of each other, suggesting that separate neural mechanisms give rise to them.