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Stereo imaging of crystal growth

Cai Y. Ma, Jing J. Liu, Xue Z. Wang
2015 AIChE Journal  
A prototype instrument is built and proof of concept study carried out to demonstrate the potentials in using the system for three-dimensional measurement of crystal shape and shape distribution.  ...  It is based on the mathematical principle that if the two-dimensional images of an object are obtained from two or more different angles, the full three-dimensional crystal shape could be reconstructed  ...  an industrial compound with cuboid-like crystal shape to obtain the crystal growth rates of the individual faces.  ... 
doi:10.1002/aic.15041 fatcat:2qiiso5jvvdalekxaofzyo3yna

Obstacle Detection Based on Fusion Between Stereovision and 2D Laser Scanner [chapter]

Raphael Labayrade, Dominique Gruyer, Cyril Royere, Mathias Perrollaz, Didier Aubert
2007 Mobile Robots: Perception & Navigation  
and predict their dynamic evolution.  ...  Another strategy is then to perform multi-obstacles tracking and association for the single laser scanner, and then to check whether an obstacle has been detected by the stereovision at the tracked positions  ...  different navigation techniques describing both navigation techniques dealing with local and control aspects of navigation as well es those handling global navigation aspects of a single robot and even for  ... 
doi:10.5772/4769 fatcat:coq2ckwcozaz7moixwnzlfkggi

Vision-Based SLAM: Stereo and Monocular Approaches

Thomas Lemaire, Cyrille Berger, Il-Kyun Jung, Simon Lacroix
2007 International Journal of Computer Vision  
This article presents two approaches to the SLAM problem using vision: one with stereovision, and one with monocular images.  ...  Without an initial map or an absolute localization means, it requires to concurrently solve the localization and mapping problems.  ...  Also, a good precision of the prediction function is of essential importance to initialize consistent and precise landmarks positions: for a ground rover, an efficient setup would be to use a stereovision  ... 
doi:10.1007/s11263-007-0042-3 fatcat:44nxhgrajjds7gcjhtftle76za

Development of a stereo imaging system for three-dimensional shape measurement of crystals

Cai Y. Ma, Jing J. Liu, Tao Liu, Xue Z. Wang
2015 2015 American Control Conference (ACC)  
A proof of concept study has been carried out to demonstrate the potentials in using the system for the three-dimensional measurement of crystals.  ...  It is based on the mathematical principle that if the two-dimensional images of an object are obtained from two different angles, the full three-dimensional crystal shape can be reconstructed.  ...  However, all these binocular and three-camera imaging systems are not designed to be used in a reactor for direct measurement of crystal size and shape evolution and the objects to be characterised are  ... 
doi:10.1109/acc.2015.7172003 dblp:conf/amcc/MaLLW15 fatcat:6lotlem4wrdmdhliknntwclxva

A Stereovision Matching Strategy for Images Captured with Fish-Eye Lenses in Forest Environments

Pedro Javier Herrera, Gonzalo Pajares, María Guijarro, José J. Ruz, Jesús M. Cruz
2011 Sensors  
We present a novel strategy for computing disparity maps from hemispherical stereo images obtained with fish-eye lenses in forest environments.  ...  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 content of this document is an exclusive responsibility of the University Complutense, and cannot be considered as the position of the European Community.  ... 
doi:10.3390/s110201756 pmid:22319380 pmcid:PMC3274010 fatcat:gqqsh47pqnalzntarzgsxixbam

Segmentation and Stereoscopic Correspondence in Images Obtained with Omnidirectional Projection for Forest Environments [chapter]

Pedro Javier, Gonzalo Pajares, Mara Guijarro, Jos J., Jess M. De La Cruz
2011 Advances in Stereo Vision  
While gradient magnitude, RGB color and texture obtained the best individual results, respectively. For this reason they are used in this work.  ...  All this does not preclude the future use of new classifiers and the combination of other strategies for the type of images analyzed.  ...  This chapter is distributed under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike-3.0 License, which permits use, distribution and reproduction for non-commercial purposes, provided  ... 
doi:10.5772/18749 fatcat:els5m3snwnerxcv2spmfbdgkty

Automatic Bluefin Tuna sizing using a stereoscopic vision system

Pau Muñoz-Benavent, Gabriela Andreu-García, José M Valiente-González, Vicente Atienza-Vanacloig, Vicente Puig-Pons, Víctor Espinosa
2017 ICES Journal of Marine Science  
In this work, the system is used 14 to study size evolution in adult Atlantic Bluefin Tuna (Thunnus Thynnus) over time in a growing farm.  ...  An image processing procedure is performed on each video 11 frame to extract individual fish, followed by a fitting procedure to adjust the fish model to the extracted targets, adapting 12 it to the bending  ...  recordings were taken once a month in 2015 between July and October for each grow-out cage, using the same 107 AM100 stereovision system.  ... 
doi:10.1093/icesjms/fsx151 fatcat:udei5z4aj5ewtkchi246yyzswy

Modelling the Stereovision-Correspondence-Analysis task by Lateral Inhibition in Accumulative Computation problem-solving method

Antonio Fernández-Caballero, Marı´a T. López, José Mira, Ana E. Delgado, José M. López-Valles, Miguel A. Fernández
2007 Expert systems with applications  
This paper exploits the current knowledge of our research team on the mentioned problem-solving methods to model the Stereovision-Correspondence-Analysis (SCA) task.  ...  For this purpose, ALI and AC methods are combined into the Lateral Inhibition in Accumulative Computation (LIAC) method.  ...  The proposed approach considers the matching environment as an optimization problem and finds the optimal solution by using an evolutionary strategy.  ... 
doi:10.1016/j.eswa.2006.07.009 fatcat:f7rb6j5st5ao3dt7q6xu3zie7e

Evolutionary Optimisation for Obstacle Detection and Avoidance in Mobile Robotics

Olivier Pauplin, Jean Louchet, Evelyne Lutton, Arnaud de La Fortelle
2005 Journal of Advanced Computational Intelligence and Intelligent Informatics  
This paper presents an artificial evolution-based method for stereo image analysis and its application to real-time obstacle detection and avoidance for a mobile robot.  ...  Results obtained on real scene with different fitness functions are presented and discussed, and an exploitation for obstacle avoidance in mobile robotics is proposed.  ...  Acknowledgements We thank Dr Amine Boumaza for his important contribution to the development of the code used in our experiments.  ... 
doi:10.20965/jaciii.2005.p0622 fatcat:i6v3ea45kzgpjhfb4a6zgtwurm

Real‐Time Head Tracker Using Color, Stereovision and Ellipse Fitting in a Particle Filter

Bogdan Kwolek
2004 Informatica  
from a mobile stereovision camera.  ...  This paper proposes the use of a particle filter combined with color, depth information and shape features as an efficient and effective way to deal with tracking a head on the basis of image stream coming  ...  Thus this stereovision system used as a separate source of information aids the process of approximating the tracked head with an ellipse.  ... 
doi:10.15388/informatica.2004.055 fatcat:27nyl4yttrgmvamuwpatvy5qzq

Applying Evolutionary Optimisation to Robot Obstacle Avoidance [article]

Olivier Pauplin, Jean Louchet (INRIA Rocquencourt), Evelyne Lutton, Michel Parent (INRIA Rocquencourt)
2005 arXiv   pre-print
This paper presents an artificial evolutionbased method for stereo image analysis and its application to real-time obstacle detection and avoidance for a mobile robot.  ...  It uses the Parisian approach, which consists here in splitting the representation of the robot's environment into a large number of simple primitives, the "flies", which are evolved following a biologically  ...  We thank Dr Amine Boumaza for his important contribution to the development of the code used in our experiments.  ... 
arXiv:cs/0510076v1 fatcat:s4clrtccpzh6bngmjzbnn7ehoy

Registration and Fusion of Close-Range Multimodal Wheat Images in Field Conditions

Sébastien Dandrifosse, Alexis Carlier, Benjamin Dumont, Benoît Mercatoris
2021 Remote Sensing  
The most accurate method, relying on a local transformation, aligned the images with an average error of 2 mm but was not reliable for thermal images.  ...  As a consequence, the main output of this study was to identify four registration-fusion strategies: (i) the REAL-TIME strategy solely based on the cameras' positions, (ii) the FAST strategy suitable for  ...  The authors are grateful to Jesse Jap, Rudy Schartz, Julien Kirstein, Romain Bebronne, Rémy Blanchard and Ariane Faures for their help.  ... 
doi:10.3390/rs13071380 fatcat:jnyiqszctjbolbuhaoechejfua

Optimised De Bruijn patterns for one-shot shape acquisition

Jordi Pagès, Joaquim Salvi, Christophe Collewet, Josep Forest
2005 Image and Vision Computing  
Coded structured light is an optical technique based on active stereovision which allows shape acquisition.  ...  These results also contribute to a comparison between the peak-based and edge-based reconstruction strategies. q  ...  In fact, not only the individual strategies M, m, and E have been used when testing the hybrid pattern, but also some combinations of them, namely MCm, ECM, and ECMCm.  ... 
doi:10.1016/j.imavis.2005.05.007 fatcat:q26objyhe5b6fpxupan6qz7vz4

Lamps: A Test Problem for Cooperative Coevolution [chapter]

Alberto Tonda, Evelyne Lutton, Giovanni Squillero
2011 Studies in Computational Intelligence  
We show here how two cooperative strategies, Group Evolution (GE) and Parisian Evolution (PE) can be built for the lamps problem.  ...  We present an analysis of the behaviour of Cooperative Co-evolution algorithms (CCEAs) on a simple test problem, that is the optimal placement of a set of lamps in a square room, for various problems sizes  ...  The experimental setup is described in section 1.5: three strategies are tested, a classical genetic programing approach, (CE for Classical Evolution), the Group Evolution (GE) and the Parisian Evolution  ... 
doi:10.1007/978-3-642-24094-2_7 fatcat:pyvaxunumbhyznownhezljnnrm

Evolutionary Art Using the Fly Algorithm [chapter]

Zainab Ali Abbood, Othman Amlal, Franck P. Vidal
2017 Lecture Notes in Computer Science  
We adapt a cooperative co-evolution strategy based on the Parisian evolution approach, the Fly algorithm, to produce artistic visual effects from an input image (e.g. a photograph).  ...  It has also been used in image reconstruction for tomography. Until now the individuals correspond to simplistic primitives: Infinitely small 3-D points.  ...  We used an AE strategy based on the Fly algorithm for creating visual effects on an image in a fully-automatic fashion.  ... 
doi:10.1007/978-3-319-55849-3_30 fatcat:kfzzsh73mzeffpsgt2oa3bwxsq
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