Target detection utilizing neural networks and modified high-order correlation method

Jeffrey H. Nanbara; Mahmood R. Azimi-Sadjadi

doi:10.1117/12.211365

20 June 1995 Target detection utilizing neural networks and modified high-order correlation method

Jeffrey H. Nanbara, Mahmood R. Azimi-Sadjadi

Proceedings Volume 2496, Detection Technologies for Mines and Minelike Targets; (1995) https://doi.org/10.1117/12.211365
Event: SPIE's 1995 Symposium on OE/Aerospace Sensing and Dual Use Photonics, 1995, Orlando, FL, United States

Abstract

This paper presents a new method for detection/classification of surface-laid land mines fom infrared imagery. This is a multistage process of preprocessing, feature extraction, neural network detection/classification, and path finding utilizing the modified high order correlation (MHOC) method. The preprocessing consists of remapping the image distribution such that the conspicuity of targets are enhanced and the background noise/clutter is suppressed as much as possible. The target feature extraction is accomplished by evaluating the principal component (PC) of blocks of data from the image. The benfit to this feature extraction is that the PCs are decorrelated. A recursive least square (RLS) algorithm is implemented in training of the PC extraction network that performs the feature extraction. Once the PCs are found, they are then used to train and test a three-layer back-propagation neural network to detect and classify the targets. The MHOC method is then applied to the resultant image to further reduce the false positives in the image. This method forms a sequence of cross-correlations and determines the consistency of correlations for path finding. The MHOC method can also be realized in a neural network structure. The simulation results, some of which are included, clearly show the detected mine paths with only a small number of false positives.

Citation Download Citation

Jeffrey H. Nanbara and Mahmood R. Azimi-Sadjadi "Target detection utilizing neural networks and modified high-order correlation method", Proc. SPIE 2496, Detection Technologies for Mines and Minelike Targets, (20 June 1995); https://doi.org/10.1117/12.211365

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