# Detecting salient blob-like image structures and their scales with a scale-space primal sketch: A method for focus-of-attention

@article{Lindeberg2005DetectingSB, title={Detecting salient blob-like image structures and their scales with a scale-space primal sketch: A method for focus-of-attention}, author={Tony Lindeberg}, journal={International Journal of Computer Vision}, year={2005}, volume={11}, pages={283-318} }

This article presents: (i) a multiscale representation of grey-level shape called the scale-space primal sketch, which makes explicit both features in scale-space and the relations between structures at different scales, (ii) a methodology for extracting significant blob-like image structures from this representation, and (iii) applications to edge detection, histogram analysis, and junction classification demonstrating how the proposed method can be used for guiding later-stage visual…

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## References

SHOWING 1-10 OF 126 REFERENCES

### 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.

### A Multiresolution Hierarchical Approach to Image Segmentation Based on Intensity Extrema

- Computer ScienceIEEE Trans. Pattern Anal. Mach. Intell.
- 1990

A computer algorithm which segments gray-scale images into regions of interest (objects) has been developed. These regions can provide the basis for scene analysis (including shape-parameter…

### Edge Focusing

- Computer ScienceIEEE Transactions on Pattern Analysis and Machine Intelligence
- 1987

It is shown that ``edge focusing'', i.e., a coarse-to-fine tracking in a continuous manner, combines high positional accuracy with good noise-reduction, which is of vital interest in several applications.

### Toward a Symbolic Representation of Intensity Changes in Images

- PhysicsIEEE Trans. Pattern Anal. Mach. Intell.
- 1988

The symbolic representation of gray-value variations is studied, with emphasis on the gradient of the image function, and a procedure is proposed to select automatically a suitable scale, and with that, the size of the right convolution kernel.

### The structure of images

- MathematicsBiological Cybernetics
- 2004

It is shown that any image can be embedded in a one-parameter family of derived images (with resolution as the parameter) in essentially only one unique way if the constraint that no spurious detail should be generated when the resolution is diminished, is applied.

### Discrete Scale-Space Theory and the Scale-Space Primal Sketch

- Computer Science
- 1991

This thesis proposes that the canonical way to construct a scale-space for discrete signals is by convolution with a kernel called the discrete analogue of the Gaussian kernel, or equivalently by solving a semi-discretized version of the diffusion equation.

### Shape from texture from a multi-scale perspective

- Mathematics1993 (4th) International Conference on Computer Vision
- 1993

The problem of scale in shape from texture is addressed and the proposed computational model is expressed completely in terms of different invariants defined from Gaussian derivatives at multiple scales in scale-space, allowing for various assumptions about surface texture to estimate local surface orientation.

### Symbolic Construction of a 2-D Scale-Space Image

- MathematicsIEEE Trans. Pattern Anal. Mach. Intell.
- 1990

A symbolic approach to constructing a multiscale primitive shape description to 2-D binary (silhouette) shape images is presented, and two types of grouping operations are identified that aggregate edge primitives at one scale into edgePrimitives at a coarser scale and group edge Primitives into partial-region assertions.