| Full text | |
| Author(s): |
Total Authors: 4
|
| Affiliation: | [1] Univ Estadual Campinas, Inst Comp, Campinas, SP - Brazil
[2] Cornell Univ, Dept Comp Sci, Ithaca, NY 14853 - USA
Total Affiliations: 2
|
| Document type: | Journal article |
| Source: | COMPUTERS AND ELECTRONICS IN AGRICULTURE; v. 70, n. 1, p. 96-104, JAN 2010. |
| Web of Science Citations: | 78 |
| Abstract | |
Contemporary Vision and Pattern Recognition problems such as face recognition, fingerprinting identification, image categorization, and DNA sequencing often have an arbitrarily large number of classes and properties to consider. To deal with such complex problems using just one feature descriptor is a difficult task and feature fusion may become mandatory. Although normal feature fusion is quite effective for some problems. it can yield unexpected classification results when the different features are not properly normalized and preprocessed. Besides it has the drawback of increasing the dimensionality which might require more training data. To cope with these problems, this paper introduces a unified approach that can combine many features and classifiers that requires less training and is more adequate to some problems than a naive method, where all features are simply concatenated and fed independently to each classification algorithm. Besides that, the presented technique is amenable to continuous learning, both when refining a learned model and also when adding new classes to be discriminated. The introduced fusion approach is validated using a multi-class fruit-and-vegetable categorization task in a semi-controlled environment, such as a distribution center or the supermarket cashier. The results show that the solution is able to reduce the classification error in up to 15 percentage points with respect to the baseline. (C) 2009 Elsevier B.V. All rights reserved. (AU) | |
| FAPESP's process: | 07/52015-0 - Approximation methods for visual computing |
| Grantee: | Jorge Stolfi |
| Support Opportunities: | Research Projects - Thematic Grants |
| FAPESP's process: | 08/08681-9 - Digital Image Forensics: Forgery and spoofing detection |
| Grantee: | Anderson de Rezende Rocha |
| Support Opportunities: | Scholarships in Brazil - Post-Doctoral |
| FAPESP's process: | 05/58103-3 - Classifiers and machine learning techniques for image processing and computer vision |
| Grantee: | Anderson de Rezende Rocha |
| Support Opportunities: | Scholarships in Brazil - Doctorate |
| FAPESP's process: | 08/54443-2 - Automated screening for diabetic retinopathies: IT in the fight against preventable blindness |
| Grantee: | Jacques Wainer |
| Support Opportunities: | Regular Research Grants |