Authors:
João Rodrigues
1
and
J. M. Hans du Buf
2
Affiliations:
1
University of Algarve - Escola Superior de Tecnologia, Portugal
;
2
University of Algarve - Vision Laboratory - FCT, Portugal
Keyword(s):
Visual cortex, line and edge detection, multi-scale, visual reconstruction, recognition, categorization.
Related
Ontology
Subjects/Areas/Topics:
Computer Vision, Visualization and Computer Graphics
;
Early Vision and Image Representation
;
Feature Extraction
;
Features Extraction
;
Image and Video Analysis
;
Informatics in Control, Automation and Robotics
;
Signal Processing, Sensors, Systems Modeling and Control
Abstract:
In this paper we present an improved scheme for line and edge detection in cortical area V1, based on responses of simple and complex cells, truly multi-scale with no free parameters. We illustrate the multi-scale representation for visual reconstruction, and show how object segregation can be achieved with coarse-to-fine-scale groupings. A two-level object categorization scenario is tested in which pre-categorization is based on coarse scales only, and final categorization on coarse plus fine scales. Processing schemes are discussed in the framework of a complete cortical architecture.