Ground-penetrating radar (GPR) technology has proven capable of detecting buried threats. The system relies on a binary classifier that is trained to distinguish between two classes: a target class, encompassing many types of buried threats and their components; and a nontarget class, which includes false alarms from the system prescreener. Typically, the training process involves a simple partition of the data into these two classes, which allows for straightforward application of standard classifiers. However, since training data is generally collected in fully controlled environments, it includes auxiliary information about each example, such as the specific type of threat, its purpose, its components, and its depth. Examples from the same specific or general type may be expected to exhibit similarities in their GPR data, whereas examples from different types may differ greatly. This research aims to leverage this additional information to improve overall classification performance by fusing classifier concepts for multiple groups, and to investigate whether structure in this information can be further utilized for transfer learning, such that the amount of expensive training data necessary to learn a new, previously-unseen target type may be reduced. Methods for accomplishing these goals are presented with results from a dataset containing a variety of target types.
[1]
Jude Shavlik,et al.
Chapter 11 Transfer Learning
,
2009
.
[2]
Leslie M. Collins,et al.
Target localization and signature extraction in GPR data using expectation-maximization and principal component analysis
,
2014,
Defense + Security Symposium.
[3]
Christopher M. Bishop,et al.
Variational Relevance Vector Machines
,
2000,
UAI.
[4]
Qiang Yang,et al.
A Survey on Transfer Learning
,
2010,
IEEE Transactions on Knowledge and Data Engineering.
[5]
Matthijs C. Dorst.
Distinctive Image Features from Scale-Invariant Keypoints
,
2011
.
[6]
L. Peters,et al.
Ground penetrating radar as a subsurface environmental sensing tool
,
1994,
Proc. IEEE.
[7]
Rayn Terin Tatsuma Sakaguchi,et al.
Image Processing Methods Applied to Landmine Detection in Ground Penetrating Radar
,
2013
.