In the remote sensing field, classification of images at large scale represents a very important problem. Most of the proposed classification strategies are based on supervised methods, which can give excellent performances, but depend strongly on the training samples used to construct the classification model. In particular, they can fail if such samples are not representative of the distributions associated with the classes. This problem is critical in a large scale scenario, in which the training samples acquired from a limited region of the image, called source domain, are not representative for classifying samples extracted from a different region, called target domain. In this work, we propose to alleviate this problem by adopting an active learning approach, in which few additional samples are selected and labeled from the new domain in order to improve generalization capabilities of the model. In particular, we suggest implementing an initialization strategy before applying the...
An Approach for Classifying large Scale Images
Pasolli, Edoardo;Melgani, Farid
2012-01-01
Abstract
In the remote sensing field, classification of images at large scale represents a very important problem. Most of the proposed classification strategies are based on supervised methods, which can give excellent performances, but depend strongly on the training samples used to construct the classification model. In particular, they can fail if such samples are not representative of the distributions associated with the classes. This problem is critical in a large scale scenario, in which the training samples acquired from a limited region of the image, called source domain, are not representative for classifying samples extracted from a different region, called target domain. In this work, we propose to alleviate this problem by adopting an active learning approach, in which few additional samples are selected and labeled from the new domain in order to improve generalization capabilities of the model. In particular, we suggest implementing an initialization strategy before applying the...I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione



