| Arredondo, T., Castillo, P., Benapres, P., Quiroz, J. & Torres, M. (2011), "A Biologically Inspired Memory in a Multi-agent Based Robotic Architecture", In Tools with Artificial Intelligence (ICTAI), 2011 23rd IEEE International Conference on. nov. 2011., pp. 344 -351. |
| Abstract: We describe a biologically inspired memory in a multi-agent based robotic architecture. In this approach, memory and pattern recognition are intertwined to form a cognitive memory that is used for recognition of objects in a robotics environment. This memory is implemented in a multiple agent behavior based blackboard architecture as an object recognition agent. The agent performance is tested against a standard dataset with satisfactory results. The system is currently installed in a mobile robotic platform where its capabilities and applications are explored. |
BibTeX:
@inproceedings{Arredondo2011,
author = {Arredondo, T. and Castillo, P. and Benapres, P. and Quiroz, J. and Torres, M.},
title = {A Biologically Inspired Memory in a Multi-agent Based Robotic Architecture},
booktitle = {Tools with Artificial Intelligence (ICTAI), 2011 23rd IEEE International Conference on},
year = {2011},
pages = {344 -351},
doi = {http://dx.doi.org/10.1109/ICTAI.2011.58}
}
|
| Castillo-Pizarro, P., Arredondo, T.V. & Torres-Torriti, M. (2010), "Introductory Survey to Open-Source Mobile Robot Simulation Software", In Robotics Symposium and Intelligent Robotic Meeting (LARS), 2010 Latin American. October 2010., pp. 150 -155. |
| Abstract: Mobile robot simulation is a valuable tool for education, research and design purposes. The last decade has seen a considerable increase in the development of new software tools for mobile robot simulation, all of which have reached different levels of maturity. This paper presents a survey of the existing tools and discusses their strengths and drawbacks in terms of simplicity, flexibility, fields of application, among other desirable features. This discussion should be valuable to students, teachers, engineers and researchers alike who are seeking adequate tools for simulating autonomous mobile robots. Introductory examples showing the usage of three of the most mature and widely used open-source simulators (Carmen, Gazebo and Open Dynamics Engine) are also included. |
BibTeX:
@inproceedings{Castillo-Pizarro2010,
author = {Patricio Castillo-Pizarro and Tomas V. Arredondo and Miguel Torres-Torriti},
title = {Introductory Survey to Open-Source Mobile Robot Simulation Software},
booktitle = {Robotics Symposium and Intelligent Robotic Meeting (LARS), 2010 Latin American},
year = {2010},
pages = {150 -155},
doi = {http://dx.doi.org/10.1109/LARS.2010.19}
}
|
| Bravo-Valenzuela, F. & Torres-Torriti, M. (2009), "Comparison of panoramic stereoscopic sensors based on hyperboloidal mirrors", In Robotics Symposium (LARS), 2009 6th Latin American. October 2009., pp. 1 -8. |
| Abstract: Panoramic distance maps can provide valuable information for mobile robot navigation. An approach to obtain such distance maps is to implement a stereoscopic system using two hyperboloidal catadioptric sensors. This paper analyzes the effects over distance estimation of two typical arrangements of the mirrors. In one of the arrangements the mirrors are placed along a vertical axis, while in the other configuration the sensors are located on plane. Both configurations may yield similar distance estimation errors for an adequately chosen baseline and given measurement range of interest. However, depending on the application, some aspects can make one arrangement preferable over the other. In the vertical configuration, the epipolar lines correspond to radial lines in the omnidirectional image, and hence, the stereoscopic correspondence problem can be solved in a standard and simple way, but a drawback of this arrangement is the space required, which in the case of mobile robot and vehicular application translates into a reduced vertical clearance and poorer aerodynamics. The horizontal arrangement, on the other hand, requires less space if mounted on a mobile robot, a vehicle's roof or its lateral mirrors, but involves complex parabolic, elliptic or hyperbolic epipolar curves that make the solution of the stereo correspondence problem computationally more expensive. Despite the evident implementation advantages and drawback of each approach, no rigorous quantitative information exits in the literature about which of the two configurations provides in general the most accurate 3D reconstruction of the environment. |
BibTeX:
@inproceedings{Bravo-Valenzuela2009,
author = {Felipe Bravo-Valenzuela and Miguel Torres-Torriti},
title = {Comparison of panoramic stereoscopic sensors based on hyperboloidal mirrors},
booktitle = {Robotics Symposium (LARS), 2009 6th Latin American},
year = {2009},
pages = {1 -8},
doi = {http://dx.doi.org/10.1109/LARS.2009.5418315}
}
|
| Garcia-Bunster, G. & Torres-Torriti, M. (2009), "A density-based approach for effective pedestrian counting at bus stops", In Systems, Man and Cybernetics, 2009. SMC 2009. IEEE International Conference on. October 2009., pp. 3434 -3439. |
| Abstract: Accurately counting people waiting at bus stops is essential for automated bus fleet scheduling and dispatch. Estimating the passenger demand in regular open bus stops is a nontrivial problem because of the varying conditions, such as illumination, crowdedness, people poses, to name a few. This paper presents a simple, but very effective approach to estimate the passenger count using people density estimates. People density is obtained from foreground segmentation using a Gaussian mixture background model. A linear model, which is employed to correct the densities due to perspective scaling for people far from the camera position, yields the final people count estimates. The approach is compared to the well-know Viola-Jones detector and shown to yield better people count estimates despite its simplicity, because it is more robust to occlusions, pose changes, and due to the fact that it does not attempt to find body parts. The proposed method is general and can be employed to count people in other public spaces, such as buildings. |
BibTeX:
@inproceedings{Garcia-Bunster2009,
author = {Guillermo Garcia-Bunster and Miguel Torres-Torriti},
title = {A density-based approach for effective pedestrian counting at bus stops},
booktitle = {Systems, Man and Cybernetics, 2009. SMC 2009. IEEE International Conference on},
year = {2009},
pages = {3434 -3439},
doi = {http://dx.doi.org/10.1109/ICSMC.2009.5346178}
}
|
| Jimenez-Pinto, J. & Torres-Torriti, M. (2009), "Driver alert state and fatigue detection by salient points analysis", In Systems, Man and Cybernetics, 2009. SMC 2009. IEEE International Conference on. October 2009., pp. 455 -461. |
| Abstract: Assessing a driver's state of awarness and fatigue is especially important to reduce the number of traffic accidents often involving bus and truck drivers, who must work during several hours under monotonous road conditions. Two main challenges arise in resolving the state of alert: first, the system must be capable of detecting the driver's face location; secondly, the driver's facial cues, such as blinking, yawning, and eyebrow rising must be recognized. Our approach combines the well-known Viola-Jones face detector with motion analysis of Shi-Tomasi salient features within the face to determine the driver's state of alert. The location of the eyes and blinking are cues whose detection is also important. To this end, the proposed method takes advantage of the high reflectivity of the retina to near infrared illumination employing a camera with an 850 nm wavelength filter. Motion analysis of the salient points, in particular cluster mass centers and spatial distribution, has proved successful in determining the driver's state of alert. |
BibTeX:
@inproceedings{Jimenez-Pinto2009,
author = {Javier Jimenez-Pinto and Miguel Torres-Torriti},
title = {Driver alert state and fatigue detection by salient points analysis},
booktitle = {Systems, Man and Cybernetics, 2009. SMC 2009. IEEE International Conference on},
year = {2009},
pages = {455 -461},
doi = {http://dx.doi.org/10.1109/ICSMC.2009.5346760}
}
|
| Tapia-Espinoza, R. & Torres-Torriti, M. (2009), "A comparison of gradient versus color and texture analysis for lane detection and tracking", In Robotics Symposium (LARS), 2009 6th Latin American. October 2009., pp. 1 -6. |
| Abstract: Accurate lane detection in real-time is a critical task in autonomous vehicle guidance and lane departure warning for driver assistance. Existing vision-based approaches rely mostly on some analysis of the spatial gradient of the image. However, if the road structure is not regular and well delimited, edges may not be easy to extract and other features must be employed. This paper evaluates the use of color and textural features as a way to improve the standard gradient-based lane detection. Textural features are generated using a bank of Gabor filters. A benefit of using color and texture is that the sky regions of the image, as well as side elements, can be detected. The results obtained from testing the approaches on city roads show that color and texture analysis yields a more accurate road segmentation. |
BibTeX:
@inproceedings{Tapia-Espinoza2009,
author = {Rodolfo Tapia-Espinoza and Miguel Torres-Torriti},
title = {A comparison of gradient versus color and texture analysis for lane detection and tracking},
booktitle = {Robotics Symposium (LARS), 2009 6th Latin American},
year = {2009},
pages = {1 -6},
doi = {http://dx.doi.org/10.1109/LARS.2009.5418326}
}
|
| Espinace, P., Soto, A. & Torres-Torriti, M. (2008), "Real-Time Robot Localization in Indoor Environments Using Structural Information", In Robotic Symposium, 2008. LARS '08. IEEE Latin American. October 2008., pp. 79 -84. |
| Abstract: This paper presents a novel approach for real-time mobile robot localization in structured indoor environments. The proposed method takes advantage of the available structural information by implementing a Monte Carlo Localization strategy over a map of line segments rather than a grid-based map, thus allowing for speed improvements. Another novel aspect is in the likelihood function, which is based on a Modified Hausdorff Distance between the expected line segments the robot should sense and the line segments extracted from actual measurements using a range finder. Additionally, the number of particles of the Monte Carlo Localization method is automatically adjusted, using a large number of particles in the global localization phase, where the position of the robot is unknown, and a reduced number of particles during the state tracking phase, where uncertainty about the robot position is restricted to a small area. The proposed approach has been implemented and tested in a real office environment, achieving true real-time performance. Results show a fast convergence from global localization to state tracking, as well as, robustness in position tracking. Experimental tests and comparisons with state-of-the-art methods validate the efficiency and robustness of our approach. |
BibTeX:
@inproceedings{Espinace2008,
author = {Pablo Espinace and Alvaro Soto and Miguel Torres-Torriti},
title = {Real-Time Robot Localization in Indoor Environments Using Structural Information},
booktitle = {Robotic Symposium, 2008. LARS '08. IEEE Latin American},
year = {2008},
pages = {79 -84},
doi = {http://dx.doi.org/10.1109/LARS.2008.27}
}
|
| Garcia-Bunster, G. & Torres-Torriti, M. (2008), "Effective Pedestrian Detection and Counting at Bus Stops", In Robotic Symposium, 2008. LARS '08. IEEE Latin American. October 2008., pp. 158 -163. |
| Abstract: This paper presents two approaches for pedestrian detection and counting at bus stops, whose purpose is to provide accurate demand estimates for an automated fleet scheduling and dispatching system. The approaches are general and can also be applied to people counting in public buildings or pedestrian detection from robotic platforms with minor modifications to account for background motion. The first approach employs a background subtraction scheme combined with the Viola and Jones detector, while the second one uses the foreground pixels count and a linear model involving people density estimates to calculate the total number of people. It is shown that the second approach is more accurate and reliable despite its simplicity, because it is not subject to the detection errors arising in the face or body parts detectors of the first approach. Both approaches are tested using image sequences from a real bus stop. |
BibTeX:
@inproceedings{Garcia-Bunster2008,
author = {Guillermo Garcia-Bunster and Miguel Torres-Torriti},
title = {Effective Pedestrian Detection and Counting at Bus Stops},
booktitle = {Robotic Symposium, 2008. LARS '08. IEEE Latin American},
year = {2008},
pages = {158 -163},
doi = {http://dx.doi.org/10.1109/LARS.2008.18}
}
|
| Honorato, J.-L., Spiniak, I. & Torres-Torriti, M. (2008), "Human Detection Using Thermopiles", In Robotic Symposium, 2008. LARS '08. IEEE Latin American. October 2008., pp. 151 -157. |
| Abstract: This paper presents a simple approach to detect people using an 8times1 thermopile array sensor. The performance of the sensor is evaluated in terms of detection rates and false positives obtained in the application of the sensor to people counting at doorways and pedestrian detection from a mobile robot in a real environment. To ensure that people is detectable regardless of the ambient temperature, the proposed method normalizes the temperatures according to a model for the maximum expected skin temperature as a function of the ambient temperature. The working principles and characterization of the thermopile sensor are also presented. This should be of interest and pedagogical value to many roboticists who wish to equip their robot with a rather effective passive infrared sensor, which unlike vision-based methods is not affected by changes in the illumination conditions of the environment. |
BibTeX:
@inproceedings{Honorato2008,
author = {Jose-Luis Honorato and Ignacio Spiniak and Miguel Torres-Torriti},
title = {Human Detection Using Thermopiles},
booktitle = {Robotic Symposium, 2008. LARS '08. IEEE Latin American},
year = {2008},
pages = {151 -157},
doi = {http://dx.doi.org/10.1109/LARS.2008.21}
}
|
| Torres-Torriti, M. & Guesalaga, A. (2008), "Scan-to-map matching using the Hausdorff distance for robust mobile robot localization", In Robotics and Automation, 2008. ICRA 2008. IEEE International Conference on. May 2008., pp. 455 -460. |
| Abstract: This paper presents a robust method for localization of mobile robots in environments that may be cluttered and that not necessarily have a polygonal structure. The estimation of the position and orientation of the robot relies on the minimization of the modified Hausdorff distance between ladar range measurements and a map of the environment. The approach is employed in combination with an extended Kalman filter to obtain accurate estimates of the robot's position, heading and velocity. Good estimates of these variables were obtained during tests performed using a differential drive robot in a populated environment, thus demonstrating that the approach provides a reliable and computationally feasible alternative for mobile robot localization and autonomous navigation. |
BibTeX:
@inproceedings{Torres-Torriti2008,
author = {Miguel Torres-Torriti and Andres Guesalaga},
title = {Scan-to-map matching using the Hausdorff distance for robust mobile robot localization},
booktitle = {Robotics and Automation, 2008. ICRA 2008. IEEE International Conference on},
year = {2008},
pages = {455 -460},
doi = {http://dx.doi.org/10.1109/ROBOT.2008.4543249}
}
|
| Guesalaga, A. & Torres-Torriti, M. (2007), "Automatic ship positioning and radar biases correction using the Hausdorff distance", In Proceedings of the 10th International Conference on Information Fusion 2007. Ottawa, Quebec, Canada,. 9-12 July 2007 2007. |
BibTeX:
@inproceedings{Guesalaga2007,
author = {Andres Guesalaga and Miguel Torres-Torriti},
title = {Automatic ship positioning and radar biases correction using the Hausdorff distance},
booktitle = {Proceedings of the 10th International Conference on Information Fusion 2007},
year = {2007}
}
|
| Torres-Torriti, M. & Guesalaga, A. (2007), "Automatic ship positioning and radar biases correction using the hausdorff distance", In Information Fusion, 2007 10th International Conference on. July 2007., pp. 1 -8. |
| Abstract: This paper describes a novel technique to obtain radar biases estimates that can effectively reduce mismatches in track association algorithms. This is accomplished by matching ship-borne radar images to geo-referenced satellite images. The matching is performed through the minimization of the averaged partial Hausdorff distance between data points in each image. The minimization rapidly yields robust latitude and longitude position estimates, as well as ship heading and radar biases. The accuracy of the measurements is improved by feeding them into a Kahnan filter, which also yields estimates for the ship's velocity. The method can be employed for automatic radar calibration of bearing and range biases, while it also serves as an alternative effective position sensor for GPS-denied environments. |
BibTeX:
@inproceedings{Torres-Torriti2007,
author = {Miguel Torres-Torriti and Andres Guesalaga},
title = {Automatic ship positioning and radar biases correction using the hausdorff distance},
booktitle = {Information Fusion, 2007 10th International Conference on},
year = {2007},
pages = {1 -8},
doi = {http://dx.doi.org/10.1109/ICIF.2007.4408137}
}
|
| Bustos, J.-P., Donoso, F., Guesalaga, A. & Torres-Torriti, M. (2006), "Matching Radar and Satellite Images Employing the Hausdorff Distance for Ship Positioning and Trajectory Estimation", In Image Processing, 2006 IEEE International Conference on. October 2006., pp. 2797 -2800. |
| Abstract: The paper describes a technique to match satellite and radar images using the Hausdorff distance (HD). Minimization of the average of a truncated array of sorted Hausdorff distances is used to get estimates for the radar location, together with sensor bias errors and its platform speed vector. The technique is applied to maritime navigation, where geo-referenced satellite images (UTM) are matched to radar scan images. Good estimates are obtained for these variables, thus providing an alternative method to obtain a vehicle's location in GPS-denied environments or for indoor autonomous navigation |
BibTeX:
@inproceedings{Bustos2006,
author = {Juan-Pablo Bustos and Felipe Donoso and Andres Guesalaga and Miguel Torres-Torriti},
title = {Matching Radar and Satellite Images Employing the Hausdorff Distance for Ship Positioning and Trajectory Estimation},
booktitle = {Image Processing, 2006 IEEE International Conference on},
year = {2006},
pages = {2797 -2800},
doi = {http://dx.doi.org/10.1109/ICIP.2006.312989}
}
|
| Haro, F. & Torres-Torriti, M. (2006), "A Comparison of Path Planning Algorithms for Omni-Directional Robots in Dynamic Environments", In Robotics Symposium, 2006. LARS '06. IEEE 3rd Latin American. October 2006., pp. 18 -25. |
| Abstract: The scope of this paper is to analyze and compare three path planning methods for omni-directional robots, which are based on a) the bug algorithm, b) the potential fields algorithm, and c) the A* algorithm for minimum cost path with multiresolution grids. The approaches are compared in terms of computational costs and the resulting path lengths. Results obtained indicate that the bug algorithm is a suitable choice for this type of application as its computational cost is lower than that of the other methods. Furthermore, minor modifications of the standard bug algorithm, such as the tangent following modification, allow the path planner to handle well the situations encountered in typical multi-robot environments |
BibTeX:
@inproceedings{Haro2006,
author = {Felipe Haro and Miguel Torres-Torriti},
title = {A Comparison of Path Planning Algorithms for Omni-Directional Robots in Dynamic Environments},
booktitle = {Robotics Symposium, 2006. LARS '06. IEEE 3rd Latin American},
year = {2006},
pages = {18 -25},
doi = {http://dx.doi.org/10.1109/LARS.2006.334319}
}
|
| Peralta-Cabezas, J.-L., Torres-Torriti, M. & Guarini-Hermann, M. (2006), "A Comparison of Bayesian Prediction Techniques for Mobile Robot Trajectory Tracking", In Mechatronics, 2006 IEEE International Conference on. July 2006., pp. 442 -447. |
| Abstract: This paper presents an assessment of different estimation and prediction techniques applied to the tracking of multiple robots. The main assessment criteria are the magnitude of the estimation or prediction error, the computational effort and the robustness of each method under non-Gaussian noise. Among the different techniques compared are the well known Kalman filters and their different variants (extended and unscented), and the more recent techniques relying on sequential Monte Carlo sampling methods, such as particle filters, and sigma-points filters |
BibTeX:
@inproceedings{Peralta-Cabezas2006,
author = {Jose-Luis Peralta-Cabezas and Miguel Torres-Torriti and Marecelo Guarini-Hermann},
title = {A Comparison of Bayesian Prediction Techniques for Mobile Robot Trajectory Tracking},
booktitle = {Mechatronics, 2006 IEEE International Conference on},
year = {2006},
pages = {442 -447},
doi = {http://dx.doi.org/10.1109/ICMECH.2006.252568}
}
|
| Peralta, J.-L., Torres-Torriti, M. & Guarini, M. (2006), "Trajectory Prediction of Multiple RoboCup F-180 Autonomous Mobile Robots for Perception-Latency Compensation", In Robotics Symposium, 2006. LARS '06. IEEE 3rd Latin American. October 2006., pp. 10 -17. |
| Abstract: This paper presents an assessment of different estimation and prediction techniques applied to the tracking of multiple robots under RoboCup F-180 environment. The main assessment criteria are the magnitude of the estimation or prediction error, the computational effort and the robustness of each method under non-Gaussian noise. Among the different techniques compared are the well known Kalman filters and their different variants (extended and unscented), and the more recent techniques relying on sequential Monte Carlo sampling methods, such as particle filters, and sigma-points filters |
BibTeX:
@inproceedings{Peralta2006,
author = {Jose-Luis Peralta and Miguel Torres-Torriti and Marcelo Guarini},
title = {Trajectory Prediction of Multiple RoboCup F-180 Autonomous Mobile Robots for Perception-Latency Compensation},
booktitle = {Robotics Symposium, 2006. LARS '06. IEEE 3rd Latin American},
year = {2006},
pages = {10 -17},
doi = {http://dx.doi.org/10.1109/LARS.2006.334318}
}
|
| Michalska, H. & Torres-Torriti, M. (2003), "Nonlinear programming and the CBH formula in feedback stabilization of nonlinear systems with drift", In Decision and Control, 2003. Proceedings. 42nd IEEE Conference on. December 2003. Volume 4, pp. 3633 - 3634 vol.4. |
| Abstract: This paper presents an approach for the asymptotic stabilization of strongly nonlinear systems that are affine in control and which cannot be stabilized by continuous state feedback. The approach only requires that along trajectories of the closed-loop system a chosen Lyapunov type function is decreased periodically (as opposed to monotonically) by employing controls which result from an on-line solution of a nonlinear programming satisficing problem stated in terms of expressions derived from the composition of flows via the Campbell-Baker-Hausdorff formula. |
BibTeX:
@inproceedings{Michalska2003,
author = {Hannah Michalska and Miguel Torres-Torriti},
title = {Nonlinear programming and the CBH formula in feedback stabilization of nonlinear systems with drift},
booktitle = {Decision and Control, 2003. Proceedings. 42nd IEEE Conference on},
year = {2003},
volume = {4},
pages = { 3633 - 3634 vol.4},
doi = {http://dx.doi.org/10.1109/CDC.2003.1271712}
}
|
| Michalska, H. & Torres-Torriti, M. (2003), "A reachable set approach to feedback stabilization of nonlinear systems with drift", In Decision and Control, 2003. Proceedings. 42nd IEEE Conference on. December 2003. Volume 6, pp. 6066 - 6071 Vol.6. |
| Abstract: The paper presents an approach to the construction of stabilizing feedback controls for strongly nonlinear systems. The class of systems of interest includes systems with drift which are affine in control and which cannot be stabilized by continuous state feedback. The approach is independent of the selection of a Lyapunov type function, but requires the solution of a nonlinear programming satisfaction problem stated in terms of the logarithmic coordinates of flows. As opposed to other approaches, point-to-point steering is not required to achieve asymptotic stability. Instead, the flow of the controlled system is required to intersect periodically a certain reachable set in the space of the logarithmic coordinates. |
BibTeX:
@inproceedings{Michalska2003a,
author = {Hannah Michalska and Miguel Torres-Torriti},
title = {A reachable set approach to feedback stabilization of nonlinear systems with drift},
booktitle = {Decision and Control, 2003. Proceedings. 42nd IEEE Conference on},
year = {2003},
volume = {6},
pages = { 6066 - 6071 Vol.6},
doi = {http://dx.doi.org/10.1109/CDC.2003.1272218}
}
|
| Torres-Torriti, M. & Michalska, H. (2002), "Stabilization of bilinear systems with unstable drift", In American Control Conference, 2002. Proceedings of the 2002. Volume 5, pp. 3490 - 3491 vol.5. |
| Abstract: A simple and computationally feasible approach to feedback stabilization of a class of bilinear systems with unstable drift is presented. Stabilization is achieved in two stages: a reaching phase, in which the control drives the trajectories to a stable manifold; and a sliding phase, in which states are steered to the origin along an ensemble of stable manifolds. The construction of the control is based on a combination of Lyapunov and Lie algebraic techniques. |
BibTeX:
@inproceedings{Torres-Torriti2002,
author = {Miguel Torres-Torriti and Hannah Michalska},
title = {Stabilization of bilinear systems with unstable drift},
booktitle = {American Control Conference, 2002. Proceedings of the 2002},
year = {2002},
volume = {5},
pages = { 3490 - 3491 vol.5},
doi = {http://dx.doi.org/10.1109/ACC.2002.1024467}
}
|
| Michalska, H. & Torres-Torriti, M. (2001), "Time-varying stabilizing feedback control for nonlinear systems with drift", In Decision and Control, 2001. Proceedings of the 40th IEEE Conference on. Volume 2, pp. 1767 -1768 vol.2. |
| Abstract: A novel method is presented for the construction of time-varying stabilizing feedback control for nonlinear systems with drift. The proposed feedback law is a composition of a periodic time-varying control and an asymptotically stabilizing feedback "correction" term. The periodic control is obtained through the solution of an open-loop control problem on the associated Lie group, which is posed as a trajectory interception problem in Philip-Hall flow coordinates |
BibTeX:
@inproceedings{Michalska2001,
author = {Hannah Michalska and Miguel Torres-Torriti},
title = {Time-varying stabilizing feedback control for nonlinear systems with drift},
booktitle = {Decision and Control, 2001. Proceedings of the 40th IEEE Conference on},
year = {2001},
volume = {2},
pages = {1767 -1768 vol.2},
doi = {http://dx.doi.org/10.1109/.2001.981159}
}
|
| Torres-Torriti, M. & Jouan, A. (2001), "Gabor vs. GMRF features for SAR imagery classification", In Image Processing, 2001. Proceedings. 2001 International Conference on. Volume 3, pp. 1043 -1046 vol.3. |
| Abstract: A comparison of the ability to discriminate among distinct regions in synthetic aperture radar (SAR) imagery using textural features based on two different methods is presented. Features are generated from Gauss Markov random field (GMRF) model parameters and from Gabor convolution energies. The discrimination ability is evaluated in terms of misclassification errors resulting from tests performed on a patchwork of different MSTAR clutter regions |
BibTeX:
@inproceedings{Torres-Torriti2001,
author = {Miguel Torres-Torriti and Alexandre Jouan},
title = {Gabor vs. GMRF features for SAR imagery classification},
booktitle = {Image Processing, 2001. Proceedings. 2001 International Conference on},
year = {2001},
volume = {3},
pages = {1043 -1046 vol.3},
doi = {http://dx.doi.org/10.1109/ICIP.2001.958305}
}
|
| Torres-Torriti, M. & Jouan, A. (2001), "An experimental comparison of multiscale MRF based methods for SAR imagery classification", In Proceedings of the 4th International Conference on Information Fusion 2001. Montreal, Quebec, Canada. 7-10 August 2001 2001. |
BibTeX:
@inproceedings{Torres-Torriti2001a,
author = {Miguel Torres-Torriti and Alexandre Jouan},
title = {An experimental comparison of multiscale MRF based methods for SAR imagery classification},
booktitle = {Proceedings of the 4th International Conference on Information Fusion 2001},
year = {2001}
}
|
| Michalska, H. & Torres-Torriti, M. (2000), "Time-varying stabilizing feedback design for bilinear systems", In Nineteenth IASTED International Conference: Modelling, Identification and Control - MIC 2000. Innsbruck, Austria. February 2000., pp. 93-99. |
BibTeX:
@inproceedings{Michalska2000,
author = {Hannah Michalska and Miguel Torres-Torriti},
title = {Time-varying stabilizing feedback design for bilinear systems},
booktitle = {Nineteenth IASTED International Conference: Modelling, Identification and Control - MIC 2000},
year = {2000},
pages = {93-99}
}
|
| Torres-Torriti, M. & Guesalaga, A. (1999), "Confidence factor and adaptive disparity range for reliable 3D reconstruction", In International Conference on Computational Intelligence for Modelling, Control and Automation. Vienna, Austria. 17-19 February 1999 1999. |
BibTeX:
@inproceedings{Torres-Torriti1999,
author = {Miguel Torres-Torriti and Andrers Guesalaga},
title = {Confidence factor and adaptive disparity range for reliable 3D reconstruction},
booktitle = {International Conference on Computational Intelligence for Modelling, Control and Automation},
year = {1999}
}
|
| Torres-Torriti, M., Leal, I. & Cipriano, A. (1996), "Ambientes de simulación de sistemas robóticos (Simulation Software for Robotic Systems)", In XII Congreso de la Asociación Chilena de Control Automático. Santiago, Chile. November 1996. |
BibTeX:
@inproceedings{Torres-Torriti1996,
author = {Miguel Torres-Torriti and Ivan Leal and Aldo Cipriano},
title = {Ambientes de simulación de sistemas robóticos (Simulation Software for Robotic Systems)},
booktitle = {XII Congreso de la Asociación Chilena de Control Automático},
year = {1996}
}
|
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