Bag of Words Representation and SVM Classifier for Timber Knots Detection on Color Images
| Affiliation auteurs | !!!! Error affiliation !!!! |
| Titre | Bag of Words Representation and SVM Classifier for Timber Knots Detection on Color Images |
| Type de publication | Conference Paper |
| Year of Publication | 2015 |
| Auteurs | Hittawe MMazen, Sidibe D, Meriaudeau F |
| Conference Name | 2015 14TH IAPR INTERNATIONAL CONFERENCE ON MACHINE VISION APPLICATIONS (MVA) |
| Publisher | MVA Organisation; IAPR TC-8; National Institute of Advanced Industrial Science and Technology (AIST); The Telecommunications Advancement Foundation; KDDI Foundation |
| Conference Location | 345 E 47TH ST, NEW YORK, NY 10017 USA |
| ISBN Number | 978-4-9011-2214-6 |
| Résumé | Knots as well as their density have a huge impact on the mechanical properties of wood boards. This paper addresses the issue of their automatic detection. An image processing pipeline which associates low level processing (contrast enhancement, thresholding, mathematical morphology) with bag-of-words approach is developed. We propose a SVM classification based on features obtained by SURF descriptors on RGB images, followed by a dictionary created using the bag-of-words approach. Our method was tested on color images from two different datasets with a total number of 640 knots. The mean recall (true positive) rate achieved was (92%) and (97%) for a single dictionary (built only on samples from the first dataset), for the two datasets respectively, illustrating the robustness of our method. |