A stereovision matching strategy for images captured with fish-eye lenses in forest environments.
We present a novel strategy for computing disparity maps from hemispherical stereo images obtained with fish-eye lenses in forest environments. At a first segmentation stage, the method identifies textures of interest to be either matched or discarded. This is achieved by applying a pattern recognition strategy based on the combination of two classifiers: Fuzzy Clustering and Bayesian. At a second stage, a stereovision matching process is performed based on the application of four stereovision matching constraints: epipolar, similarity, uniqueness and smoothness. The epipolar constraint guides the process. The similarity and uniqueness are mapped through a decision making strategy based on a weighted fuzzy similarity approach, obtaining a disparity map. This map is later filtered through the Hopfield Neural Network framework by considering the smoothness constraint. The combination of the segmentation and stereovision matching approaches makes the main contribution. The method is compared against the usage of simple features and combined similarity matching strategies.
Department of Computer Architecture and Automatic Control, Faculty of Computer Science, Complutense University, 28040 Madrid, Spain. pjherrera@pdi.ucm.es
Pedro Javier
PJ
Herrera
Gonzalo
G
Pajares
María
M
Guijarro
José J
JJ
Ruz
Jesús M
JM
Cruz
D000818:Animals; D001499:Bayes Theorem; D016000:Cluster Analysis; D004777:Environment; D005399:Fishes; D017143:Fuzzy Logic; D007091:Image Processing, Computer-Assisted / Q000379:methods*; D007909:Lenses; D016571:Neural Networks, Computer; D013816:Thermodynamics; D014197:Trees / Q000033:anatomy & histology*; D014785:Vision, Ocular