title: A joint compression-discrimination neural transformation applied to target detection.
abstract: Many image recognition algorithms based on data-learning perform dimensionality reduction before the actual learning and classification because the high dimensionality of raw imagery would require enormous training sets to achieve satisfactory performance. A potential problem with this approach is that most dimensionality reduction techniques, such as principal component analysis (PCA), seek to maximize the representation of data variation into a small number of PCA components, without considering interclass discriminability. This paper presents a neural-network-based transformation that simultaneously seeks to provide dimensionality reduction and a high degree of discriminability by combining together the learning mechanism of a neural-network-based PCA and a backpropagation learning algorithm. The joint discrimination-compression algorithm is applied to infrared imagery to detect military vehicles.
authors.affiliation: U.S. Army Research Laboratory, AMSRD-ARL-SE-SE, Adelphi, MD 20783-1197, USA. achan@arl.army.mil
authors.forename: Alex Lipchen
authors.initials: AL
authors.lastname: Chan
authors.forename: Sandor Z
authors.initials: SZ
authors.lastname: Der
authors.forename: Nasser M
authors.initials: NM
authors.lastname: Nasrabadi
mesh_terms: D000465:Algorithms; D001185:Artificial Intelligence; D016000:Cluster Analysis; D003198:Computer Simulation; D007089:Image Enhancement / Q000379:methods; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D016247:Information Storage and Retrieval / Q000379:methods*; D015233:Models, Statistical; D016571:Neural Networks, Computer; D010363:Pattern Recognition, Automated / Q000379:methods*; D025341:Principal Component Analysis; D011825:Radar; D013382:Subtraction Technique