Functions of multiple instances for sub-pixel target characterization in hyperspectral imagery

Abstract:

In this paper, the Multi-target Extended Function of Multiple Instances (Multi-target eFUMI) method is developed and described. The method is capable of learning multiple target spectral signatures from weakly- and inaccurately-labeled hyperspectral imagery. Multi-target eFUMI is a generalization of the Function of Multiple Instances approach (FUMI). The FUMI approach differs significantly from standard Multiple Instance Learning (MIL) approach in that it assumes each data is a function of target and non-target “concepts.” In this paper, data points which are convex combinations of multiple target and several non-target “concepts” are considered. Moreover, it allows both “proportion-level” and “bag-level” uncertainties in training data. Training data needs only binary labels indicating whether some spatial area contains or does not contain some proportion of target; the specific target proportions for the training data are not needed. Multi-target eFUMI learns the target and non-target concepts, the number of non-target concepts, and the proportions of all the concepts for each data point. After learning the target concepts using the binary “bag-level” labeled training data, target detection can be performed on test data. Results for sub-pixel target detection on simulated and real airborne hyperspectral data are shown.

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Citation:

A. Zare and C. Jiao, “Functions of multiple instances for sub-pixel target characterization in hyperspectral imagery,” in Proc. SPIE 9472, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXI, 2015. 
@InProceedings{zare2015functions,
Title = {Functions of multiple instances for sub-pixel target characterization in hyperspectral imagery},
Author = {Zare, Alina and Jiao, Changzhe},
Booktitle = {Proc. SPIE 9472, Algorithms and Technologies for Multispectral, Hyperspectral, and Ultraspectral Imagery XXI},
Year = {2015},
Month = {May},
Number = {947212},
Volume = {9472},
Doi = {10.1117/12.2176889},
}