Adding Scale to the Primal Sketch

Saund, Eric

doi:10.1109/CVPR.1989.37830

Adding Scale to the Primal Sketch

Eric Saund

CVPR 1989 pp. 70-78

doi:10.1109/CVPR.1989.37830 /cvpr/1989/saund1989cvpr-adding/

Abstract

The author shows how a scale dimension can be added to Marr's (1976) primal sketch to facilitate construction of multiscale descriptions of two-dimensional scales. In contrast to conventional scale-space approaches, this method omits any smoothing or blurring and performs grouping operations on symbolic shape tokens residing in a scale-space blackboard data structure. Two types of grouping operation are introduced: (1) fine-to-coarse aggregation of primitive-edge tokens builds coarser-scale edge maps from finer-scale information; and (2) pairwise grouping of symmetrically placed primitive edges gives rise to a primitive partial region token denoting curved-contour, primitive-corner, and bar events. The resulting collection of tokens makes the fundamental edge and region components of a shape's geometry available to later symbolic processes, leading to shape recognition or other tasks.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>

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Cite

Text

Saund. "Adding Scale to the Primal Sketch." IEEE/CVF Conference on Computer Vision and Pattern Recognition, 1989. doi:10.1109/CVPR.1989.37830

Markdown

[Saund. "Adding Scale to the Primal Sketch." IEEE/CVF Conference on Computer Vision and Pattern Recognition, 1989.](https://mlanthology.org/cvpr/1989/saund1989cvpr-adding/) doi:10.1109/CVPR.1989.37830

BibTeX

@inproceedings{saund1989cvpr-adding,
  title     = {{Adding Scale to the Primal Sketch}},
  author    = {Saund, Eric},
  booktitle = {IEEE/CVF Conference on Computer Vision and Pattern Recognition},
  year      = {1989},
  pages     = {70-78},
  doi       = {10.1109/CVPR.1989.37830},
  url       = {https://mlanthology.org/cvpr/1989/saund1989cvpr-adding/}
}