Detection of targets in low-resolution FLIR images using two-dimensional directional wavelets

This paper investigates the use of Continuous Wavelet Transform (CWT) features for detection of targets in low resolution FLIR imagery. We specifically use the CWT features corresponding to the integration of target features at all relevant scales and orientations. These features are combined with non-linear transformations (thresholding, enhancement, morphological operations). We compare our previous results using the Mexican hat wavelet with those obtained using the two types of directional wavelets: the Morlet wavelet and the Cauchy wavelets. The algorithm was tested on the TRIM2 data base.

[1]  Vincent Mirelli,et al.  Automatic target recognition using a multi-layer convolution neural network , 1996 .

[2]  Jean-Pierre Antoine,et al.  Two-dimensional directional wavelets and the scale-angle representation , 1996, Signal Process..

[3]  Nasser M. Nasrabadi,et al.  Automatic target recognition using modularly cascaded vector quantizers and multilayer perceptrons , 1996, 1996 IEEE International Conference on Acoustics, Speech, and Signal Processing Conference Proceedings.

[4]  Mark J. T. Smith,et al.  Multidimensional wavelets for target detection and recognition , 1996, Defense + Commercial Sensing.

[5]  Jean-Pierre Antoine,et al.  Target detection and recognition using two-dimensional isotropic and anisotropic wavelets , 1995, Defense, Security, and Sensing.

[6]  Rama Chellappa,et al.  Probe-based automatic target recognition in infrared imagery , 1997, IEEE Trans. Image Process..

[7]  Pierre Vandergheynst,et al.  Directional Wavelets Revisited: Cauchy Wavelets and Symmetry Detection in Patterns , 1999 .

[8]  Romain Murenzi,et al.  Two-dimensional continuous wavelet transform as linear phase space representation of two-dimensional signals , 1997, Defense, Security, and Sensing.

[9]  Denis Semwogerere.  The use of the two dimensional continuous wavelet transform for classification of targets in flir imagery , 1998 .

[10]  Romain Murenzi,et al.  SAR target feature extraction using the 2D continuous wavelet transform , 1997, Defense, Security, and Sensing.