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An elementary digital plane recognition algorithm

Y. Gerard, I. Debled-Rennesson, P. Zimmermann
2005 Discrete Applied Mathematics  
Given a finite unstructured subset of Z 3 , the problem of the digital plane recognition is to determine whether there exists a naive digital plane containing it.  ...  It uses an original strategy of optimization in a set of triangular facets (triangles). The code is short and elementary (less than 300 lines) and available on http://www.loria.fr/∼debled/plane.  ...  It thus provides a fast and elementary algorithm for digital plane recognition.  ... 
doi:10.1016/j.dam.2005.02.026 fatcat:bt4zb25zlfdhloiutwomogtaje

Fast face recognition approach using a graphical processing unit "GPU"

Yousri Ouerhani, Maher Jridi, Ayman AlFalou
2010 2010 IEEE International Conference on Imaging Systems and Techniques  
In this manuscript, we present an implementation of a correlation method for face recognition application on GPU.  ...  Our correlator is based on the famous "4f " setup and the use of a Phase Only Filter (POF). Traditionally, the correlation approach is implemented using optical components for real-time application.  ...  CONCLUSION Through this paper, we have proposed and validated an approach implementing the correlation method digitally on a GPU NIVIDIA for a face recognition application.  ... 
doi:10.1109/ist.2010.5548545 fatcat:4e2oj2rp3veynfv25gi7zezhjy

Applications of digital straight segments to economical image encoding [chapter]

Vladimir Kovalevsky
1997 Lecture Notes in Computer Science  
A fast algorithm for recognizing digital straight line segments in boundary curves is presented. The algorithm is applied to encode the boundaries of homogeneous regions in digitized images.  ...  A new classification of digital curves into boundary curves and visual curves of different thickness is suggested.  ...  The author has suggested a simple and fast version of this algorithm [Kov90] and demonstrated that the recognition may be performed as a successive, point for point, actualization of the coefficients  ... 
doi:10.1007/bfb0024829 fatcat:u53jfyqyxzdgrlbyctcrthwgpi

On Three Constrained Versions of the Digital Circular Arc Recognition Problem [chapter]

Tristan Roussillon, Laure Tougne, Isabelle Sivignon
2009 Lecture Notes in Computer Science  
The main contribution is a simple and linear-time algorithm for solving three subproblems: online recognition of digital circular arcs coming from the digitization of a disk having either a given radius  ...  Solving these subproblems is interesting in itself, but also for the recognition of digital circular arcs. The proposed algorithm can be iteratively used for this problem.  ...  Even if a linear algorithm has been proposed for a long time [11] , using a sophisticated machinery coming from linear programming [10] , no solution is known to be truly fast and easy to implement.  ... 
doi:10.1007/978-3-642-04397-0_4 fatcat:kdztand4pjdefd5f5ek4iz4d4e

DSP IMPLEMENTATION OF THE FAST FOURIER TRANSFORM USING THE CORDIC ALGORITHM

Youness Mehdaoui, Rachid El Alami
2018 ICTACT Journal on Communication Technology  
Fourier transform is a tool enabling the understanding and implementation of a large number of numerical methods for signal and image processing.  ...  This tool has many applications in domains such as vocal recognition, image quality improvement, digital transmission, the biomedical sector and astronomy.  ...  In fact, for a given sequence of elementary rotations, the factors Ki can be grouped together and applied at one time.  ... 
doi:10.21917/ijct.2018.0272 fatcat:xs726x3urvhu5jhx7omngxwl4a

High-level Performance Evaluation of Object Detection based on Massively Parallel Focal-plane Acceleration Requiring Minimum Pixel Area Overhead

Eloy Parra-Barrero, Jorge Fernández-Berni, Fernanda D. V. R. Oliveira, Ricardo Carmona-Galán, Ángel Rodríguez-Vázquez
2016 Proceedings of the 11th Joint Conference on Computer Vision, Imaging and Computer Graphics Theory and Applications  
From these high-level specifications, we propose a focal-plane processing architecture tailored to speed up object detection via the Viola-Jones algorithm.  ...  A performance evaluation of the proposed scheme in terms of accuracy and acceleration for face detection is reported.  ...  ACKNOWLEDGEMENTS This work has been funded by the Spanish Government through projects TEC2012-38921-C02 MINECO (European Region Development Fund, ERDF/FEDER), Junta de Andalucía through project TIC 2338-2013 CEICE and  ... 
doi:10.5220/0005651200790085 dblp:conf/visapp/Parra-BarreroFO16 fatcat:fn5dmuv4kvbjnjkawlafrupte4

Page 445 of Mathematical Reviews Vol. , Issue 91A [page]

1991 Mathematical Reviews  
Two algorithms for processing and recognition of im- ages; Chapter 4.  ...  Pandu [Pandu Rangan, C.] (6-IITM-C) A fast algorithm for computing sparse visibility graphs. Algorithmica 5 (1990), no. 2, 201-214.  ... 

FACETS : A CLOUDCOMPARE PLUGIN TO EXTRACT GEOLOGICAL PLANES FROM UNSTRUCTURED 3D POINT CLOUDS

T.J. B. Dewez, D. Girardeau-Montaut, C. Allanic, J. Rohmer
2016 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
Two algorithms perform the segmentation: Kd-Tree and Fast Marching.  ...  Both divide the point cloud into sub-cells, then compute elementary planar objects and aggregate them progressively according to a planeity threshold into polygons.  ...  TD wishes to thank Benjamin Dolva from the Virtual Outcrop Group CIPR (UniResearch) for assistance in field data collection.  ... 
doi:10.5194/isprs-archives-xli-b5-799-2016 fatcat:vwlisgwme5ab3bdy5orcq3jdvu

Three-dimensional identification of stem cells by computational holographic imaging

Inkyu Moon, Bahram Javidi
2006 Journal of the Royal Society Interface  
For recognition and classification of stem cells, a statistical approach using an empirical cumulative density function is introduced.  ...  We present an optical imaging system and mathematical algorithms for three-dimensional sensing and identification of stem cells.  ...  The authors are grateful to the anonymous reviewers for their valuable comments and suggestions.  ... 
doi:10.1098/rsif.2006.0175 pmid:17251147 pmcid:PMC2359842 fatcat:qsviywjzrfgcrmecfl2phgxnrq

Structural Construction for On-Line Mathematical Formulae Recognition [chapter]

Daniel Průša, Václav Hlaváč
2008 Lecture Notes in Computer Science  
We present a method for on-line mathematical formulae recognition based on the structural construction paradigm and twodimensional grammars.  ...  We show that the proposed method can be effectively implemented and practically used.  ...  Furthermore, we present significant improvements in the parsing algorithm resulting in a fast and responsive implementation.  ... 
doi:10.1007/978-3-540-85920-8_39 fatcat:ganqdemi6bbyfebuwsdvlaulii

On-line testing of analog circuits by adaptive filters [chapter]

Marcelo Negreiros, Luigi Carro
1997 VLSI: Integrated Systems on Silicon  
This papers describes a new technique for on-line testing of analog circuits based on plant recognition by adaptive algorithms.  ...  The paper presents the testing methodology and experimental results showing easy detection of soft, large-deviation and hard faults, with a low cost digital processor.  ...  The transfer function of this circuit can be found from elementary circuit analysis to be: -1 1 H(s)=-·--- RIC S+-1- R2C (5) For the simulation of this plant in the digital domain we take its z-transform  ... 
doi:10.1007/978-0-387-35311-1_5 fatcat:4h7zjcib7nftlkmivmaisv3qla

FACETS : A CLOUDCOMPARE PLUGIN TO EXTRACT GEOLOGICAL PLANES FROM UNSTRUCTURED 3D POINT CLOUDS

T.J. B. Dewez, D. Girardeau-Montaut, C. Allanic, J. Rohmer
2016 The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
Two algorithms perform the segmentation: Kd-Tree and Fast Marching.  ...  Both divide the point cloud into sub-cells, then compute elementary planar objects and aggregate them progressively according to a planeity threshold into polygons.  ...  TD wishes to thank Benjamin Dolva from the Virtual Outcrop Group CIPR (UniResearch) for assistance in field data collection.  ... 
doi:10.5194/isprsarchives-xli-b5-799-2016 fatcat:bv3y5erxtrgbvnmip5nxpgybbe

Page 438 of Mathematical Reviews Vol. , Issue 87a [page]

1987 Mathematical Reviews  
Author summary (translated from the Russian): “Using a single approach, we construct fast algorithms for calculating the basic types of distances between convex polyhedra.”  ...  Author summary: “We describe an optimal solution for the fol- lowing geometric search problem defined for a set P of n points in three dimensions: Given a plane h with all points of P on one side and a  ... 

Comparison of passive ranging integral imaging and active imaging digital holography for three-dimensional object recognition

Yann Frauel, Enrique Tajahuerce, Osamu Matoba, Albertina Castro, Bahram Javidi
2004 Applied Optics  
We explore various algorithms for 3D recognition such as nonlinear correlation and target distortion tolerance. We also provide a comparison of the advantages and disadvantages of the two techniques.  ...  We describe how each technique can be used to retrieve the depth information of a 3D scene and how this information can then be used for 3D object recognition.  ...  , for both representation and recognition of 3D objects.  ... 
doi:10.1364/ao.43.000452 pmid:14735964 fatcat:kl2dwrvofbh7jjr2rta5t4jrq4

A REVIEW ON DIGITAL IMAGE PROCESSING: APPLICATIONS, TECHNIQUES AND APPROACHES IN VARIOUS FIELDS

Reshma Deshmukh
2020 Zenodo  
Image processing is a complex process that involves various techniques and algorithms. There is no fixed pattern and hence there are limits on adopting the image processing in any process.  ...  The advantages and limitations of certain strategies and algorithms used in image processing such as SIFT, SURF, BRIEF and ORB are discussed in detail.  ...  Binary Robust Independent Elementary Features (BRIEF): Rublee et al. proposed Oriented FAST and Rotated BRIEF (ORB) as another efficient alternative for SIFT and SURF.  ... 
doi:10.5281/zenodo.3953440 fatcat:nhpr3lzwv5g2vjibks7u3tftxm
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