title: A study of feature combination for vehicle detection based on image processing.
abstract: Video analytics play a critical role in most recent traffic monitoring and driver assistance systems. In this context, the correct detection and classification of surrounding vehicles through image analysis has been the focus of extensive research in the last years. Most of the pieces of work reported for image-based vehicle verification make use of supervised classification approaches and resort to techniques, such as histograms of oriented gradients (HOG), principal component analysis (PCA), and Gabor filters, among others. Unfortunately, existing approaches are lacking in two respects: first, comparison between methods using a common body of work has not been addressed; second, no study of the combination potentiality of popular features for vehicle classification has been reported. In this study the performance of the different techniques is first reviewed and compared using a common public database. Then, the combination capabilities of these techniques are explored and a methodology is presented for the fusion of classifiers built upon them, taking into account also the vehicle pose. The study unveils the limitations of single-feature based classification and makes clear that fusion of classifiers is highly beneficial for vehicle verification.
authors.affiliation: Grupo de Tratamiento de Imágenes, Universidad Politécnica de Madrid, 28040 Madrid, Spain ; Altran Spain, Methods & Tools, 28022 Madrid, Spain.
authors.forename: Jon
authors.identifier: 0000-0001-7240-3317
authors.initials: J
authors.lastname: Arróspide
authors.affiliation: Grupo de Tratamiento de Imágenes, Universidad Politécnica de Madrid, 28040 Madrid, Spain ; Video Processing and Understanding Lab, Universidad Autónoma de Madrid, 28049 Madrid, Spain.
authors.forename: Luis
authors.identifier: 0000-0002-5364-9837
authors.initials: L
authors.lastname: Salgado
mesh_terms: D007091:Image Processing, Computer-Assisted; D018986:Motor Vehicles; D025341:Principal Component Analysis