Holub, Alex and Perona, Pietro (2005) A Discriminative Framework for Modelling Object Classes. In: 2005 IEEE Computer Society Conference on Computer Vision and Pattern Recognition. IEEE Computer Society Conference on Computer Vision and Pattern Recognition . IEEE , Los Alamitos, CA, pp. 664-671. ISBN 0-7695-2372-2 http://resolver.caltech.edu/CaltechAUTHORS:20110809-084835731
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Here we explore a discriminative learning method on underlying generative models for the purpose of discriminating between object categories. Visual recognition algorithms learn models from a set of training examples. Generative models learn their representations by considering data from a single class. Generative models are popular in computer vision for many reasons, including their ability to elegantly incorporate prior knowledge and to handle correspondences between object parts and detected features. However, generative models are often inferior to discriminative models during classification tasks. We study a discriminative approach to learning object categories which maintains the representational power of generative learning, but trains the generative models in a discriminative manner. The discriminatively trained models perform better during classification tasks as a result of selecting discriminative sets of features. We conclude by proposing a multiclass object recognition system which initially trains object classes in a generative manner, identifies subsets of similar classes with high confusion, and finally trains models for these subsets in a discriminative manner to realize gains in classification performance.
|Item Type:||Book Section|
|Additional Information:||© 2005 IEEE. Issue Date: 20-25 June 2005. Date of Current Version: 25 July 2005. C. Rasmussen for making the conjugate gradient code ’minimize’ publicly available and L. Zelnik, R. Fergus, F.F. Li, and G. Hinton for useful discussions.|
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|Official Citation:||Holub, A.; Perona, P.; , "A discriminative framework for modelling object classes," Computer Vision and Pattern Recognition, 2005. CVPR 2005. IEEE Computer Society Conference on , vol.1, no., pp. 664- 671 vol. 1, 20-25 June 2005 doi: 10.1109/CVPR.2005.25 URL: http://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=1467332&isnumber=31472|
|Usage Policy:||No commercial reproduction, distribution, display or performance rights in this work are provided.|
|Deposited By:||Tony Diaz|
|Deposited On:||12 Sep 2011 16:13|
|Last Modified:||12 Sep 2011 16:13|
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