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Probe-based automatic target recognition in infrared imagery

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2 Author(s)
Der, S.Z. ; Night Vision Electronic Sensors Directorate, AMSEL-RD-NV-VISP-LET, Ft. Belvoir, VA, USA ; Chellappa, R.

A probe-based approach combined with image modeling is used to recognize targets in spatially resolved, single frame, forward looking infrared (FLIR) imagery. A probe is a simple mathematical function that operates locally on pixel values and produces an output that is directly usable by an algorithm. An empirical probability density function of the probe values is obtained from a local region of the image and used to estimate the probability that a target of known shape is present. Target shape information is obtained from three-dimensional (3-D) computer-aided design (CAD) models. Knowledge of the probe values along with probe probability density functions and target shape information allows the likelihood ratio between a target hypothesis and background hypothesis to be written. The generalized likelihood ratio test is then used to accept one of the target poses or to choose the background hypothesis. We present an image model for infrared images, the resulting recognition algorithm, and experimental results on three sets of real and synthetic FLIR imagery

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Image Processing, IEEE Transactions on  (Volume:6 ,  Issue: 1 )