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Selecting features for object detection using an AdaBoost-compatible evaluation function
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DOI：10.1016/j.patrec.2008.03.020.png)
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Abstract
En 中文
This paper addresses the problem of selecting features in a visual object detection setup where a detection algorithm is applied to an input image represented by a set of features. The set of features to be employed in the test stage is prepared in two training-stage steps. In the first step, a feature extraction algorithm produces a (possibly large) initial set of features, In the second step, on which this paper focuses, the initial set is reduced using a selection procedure. The proposed selection procedure is based on a novel evaluation function that measures the utility of individual features for a certain detection task. Owing to its design, the evaluation function can be seamlessly embedded into an AdaBoost selection framework. The developed selection procedure is integrated with state-of-the-art feature extraction and object detection methods. The presented system was tested on five challenging detection Setups. In three of them, a fairly high detection accuracy was effected by as few as six features selected out of several hundred initial candidates. (c) 2008 Elsevier B.V. All rights reserved.
Keywords:
feature selection
AdaBoost
object detection
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