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Daniel Ponsa and Antonio Lopez. 2007. Cascade of Classifiers for Vehicle Detection. Advanced Concepts for Intelligent Vision Systems, LNCS 4678, volume 1, pp. 980–989.
Keywords: vehicle detection
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Angel Sappa, Rosa Herrero, Fadi Dornaika, David Geronimo and Antonio Lopez. 2007. Road Approximation in Euclidean and v-Disparity Space: A Comparative Study. EUROCAST2007, Workshop on Cybercars and Intelligent Vehicles.368–369.
Abstract: This paper presents a comparative study between two road approximation techniques—planar surfaces—from stereo vision data. The first approach is carried out in the v-disparity space and is based on a voting scheme, the Hough transform. The second one consists in computing the best fitting plane for the whole 3D road data points, directly in the Euclidean space, by using least squares fitting. The comparative study is initially performed over a set of different synthetic surfaces
(e.g., plane, quadratic surface, cubic surface) digitized by a virtual stereo head; then real data obtained with a commercial stereo head are used. The comparative study is intended to be used as a criterion for fining the best technique according to the road geometry. Additionally, it highlights common problems driven from a wrong assumption about the scene’s prior knowledge.
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Jose Manuel Alvarez, Antonio Lopez and Ramon Baldrich. 2007. Shadow Resistant Road Segmentation from a Mobile Monocular System. 3rd Iberian Conference on Pattern Recognition and Image Analysis (IbPRIA 2007), J. Marti et al. (Eds.) LNCS 4477:9–16.
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Carme Julia, Angel Sappa, Felipe Lumbreras and Antonio Lopez. 2008. Recovery of Surface Normals and Reflectance from Different Lighting Conditions. 5th International Conference on Image Analysis and Recognition.315–325. (LNCS.)
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Fadi Dornaika and Angel Sappa. 2008. Real Time on Board Stereo Camera Pose through Image Registration. IEEE Intelligent Vehicles Symposium,.804–809.
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Carme Julia, Angel Sappa, Felipe Lumbreras and Joan Serrat. 2008. Photometric Stereo through and Adapted Alternation Approach. IEEE International Conference on Image Processing,.1500–1503.
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Angel Sappa, Fadi Dornaika, David Geronimo and Antonio Lopez. 2008. Registration-based Moving Object Detection from a Moving Camera. IROS2008 2nd Workshop on Perception, Planning and Navigation for Intelligent Vehicles.65–69.
Abstract: This paper presents a robust approach for detecting moving objects from on-board stereo vision systems. It relies on a feature point quaternion-based registration, which avoids common problems that appear when computationally expensive iterative-based algorithms are used on dynamic environments. The proposed approach consists of three stages. Initially, feature points are extracted and tracked through consecutive frames. Then, a RANSAC based approach is used for registering
two 3D point sets with known correspondences by means of the quaternion method. Finally, the computed 3D rigid displacement is used to map two consecutive frames into the same coordinate system. Moving objects correspond to those areas with large registration errors. Experimental results, in different scenarios, show the viability of the proposed approach.
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Carme Julia, Angel Sappa, Felipe Lumbreras, Joan Serrat and Antonio Lopez. 2008. An Adapted Alternation Approach for Recommender Systems. IEEE International Conference on e–Business Engineering,.128–135.
Abstract: This paper presents an adaptation of the alternation technique to tackle the prediction task in recommender systems. These systems are widely considered in electronic commerce to help customers to find products they will probably like or dislike. As the SVD-based approaches, the proposed adapted alternation technique uses all the information stored in the system to find the predictions. The main advantage of this technique with respect to the SVD-based ones is that it can deal with missing data. Furthermore, it has a smaller computational cost. Experimental results with public data sets are provided in order to show the viability of the proposed adapted alternation approach.
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Jose Manuel Alvarez, Antonio Lopez and Ramon Baldrich. 2008. Illuminant Invariant Model-Based Road Segmentation. IEEE Intelligent Vehicles Symposium,.1155–1180.
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Fadi Dornaika and Angel Sappa. 2007. Improving Appearance-Based 3D Face Tracking Using Sparse Stereo Data. In J. Braz, A.R., H. Araujo and J. Jorge,, ed. Advances in Computer Graphics and Computer Vision,. Springer Verlag, 354–366.
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