Filters








6,926 Hits in 4.2 sec

Epipolar Geometry Based On Line Similarity [article]

Gil Ben-Artzi, Tavi Halperin, Michael Werman, Shmuel Peleg
2017 arXiv   pre-print
It is based on the quality of stereo matching between the two lines, as corresponding epipolar lines yield a good stereo correspondence.  ...  of epipolar geometry.  ...  The similarity between the two lines is based on their intensity differences.  ... 
arXiv:1604.04848v4 fatcat:lhnqock7vja35ii37nyciy4wsy

Models from image triplets using epipolar gradient features

Etienne Vincent, Robert Laganière
2007 Image and Vision Computing  
The selected points are based on epipolar gradients, and consist in stable image features relevant to reconstruction.  ...  Then, the selected points are matched using edge transfer, a measure of geometric consistency for point triplets and the edges on which they lie.  ...  This projection, l is the epipolar line of x, and thus points in one image are related to lines in the other through the image pair's epipolar geometry.  ... 
doi:10.1016/j.imavis.2006.12.021 fatcat:xdh7be3aefbkfnq7ibp4c7t6je

Interpolation of three views based on epipolar geometry

Makoto Kimura, Hideo Saito, Bernd Girod, Charles A. Bouman, Eckehard G. Steinbach
2000 Visual Communications and Image Processing 2001  
Synthesized images are based on 3D shape in PVS, so the occlusion of the object is reproduced in the generated images, however it requires only weak calibration.  ...  In this paper, we propose a method for generating arbitrary view image by interpolating images between three cameras using epipolar geometry.  ...  EPIPOLAR GEOMETRY Epipolar geometry is one form of handling the projection function.  ... 
doi:10.1117/12.411799 fatcat:ssbztgihkfe7ljnhzyvvwmuahq

Epipolar geometry estimation and its application to image coding

K. Hata, M. Etoh
1999 Proceedings 1999 International Conference on Image Processing (Cat. 99CH36348)  
That practically contributes to improving the coding eficiency, where more than 1000 viewpoint images are coded by a type of predictive coding based on epapolar geometry.  ...  This paper presents image-based rendering related techniques; (1)a computer vision technique to estimate accurate epipolar geometry and (2) a n image coding technique to compress multiple-viewpoint images  ...  We can find the line 12 on which m2 exists as follows. where x = (~, y )~. We call the line 12 the epipolar line corresponding t o the point m l .  ... 
doi:10.1109/icip.1999.822941 dblp:conf/icip/HataE99 fatcat:ueil7yukvvhsxbcukd2qtjubsi

An Epipolar Geometry-Based Fast Disparity Estimation Algorithm for Multiview Image and Video Coding

Jiangbo Lu, Hua Cai, Jian-Guang Lou, Jiang Li
2007 IEEE transactions on circuits and systems for video technology (Print)  
Theoretical analysis, optimal disparity vector distribution histograms, and experimental results show that the proposed epipolar geometry-based DE can greatly reduce search region and effectively track  ...  Moreover, a robustness study shows that the proposed DE algorithm is insensitive to the epipolar geometry estimation noise.  ...  with this epipolar geometry-based framework.  ... 
doi:10.1109/tcsvt.2007.896659 fatcat:74txwqux7zho7i7ckod6njcpfy

A novel image matching method in camera-calibrated system

Junwei Yu, Lubin Weng, Yuan Tian, Yanqing Wang, Xianqing Tai
2008 2008 IEEE Conference on Cybernetics and Intelligent Systems  
These descriptors are constructed from binary-threshold gray histogram, sample statistics of the edge points' epipolar gradients, and average intensities of points on the epipolar line, respectively, all  ...  image patches based.  ...  In epipolar geometry, as we all know, epipolar line l in the first image corresponds to the epipolar line l′ in the second image.  ... 
doi:10.1109/iccis.2008.4670897 fatcat:kkvv45i4krgmxdm7nzyo3icfbu

QUANTITATIVE ASSESSMENT OF THE PROJECTION TRAJECTORY-BASED EPIPOLARITY MODEL AND EPIPOLAR IMAGE RESAMPLING FOR LINEAR-ARRAY SATELLITE IMAGES

D. Gong, Y. Han, L. Zhang
2020 ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences  
Based on the analysis of the epipolar line properties, a practical method for epipolar resampling developed.  ...  In this paper, the properties of the projection trajectory-based epipolarity model are analyzed quantitatively, and the approximate straight line and parallelism property of the epipolar curve are discussed  ...  is proposed, which is similar to the method based on coplanar conditions.  ... 
doi:10.5194/isprs-annals-v-1-2020-89-2020 fatcat:e3u3ebna35d3pjhuwgb5go4zji

A Comparative Study on Disparity Analysis Based on Convergentand Rectified Views

O Schreer, N Brandenburg, P Kauff
2000 Procedings of the British Machine Vision Conference 2000  
If the epipolar geometry is known, disparity analysis can be performed by computing the disparity along the epipolar line in the original views.  ...  Using a parallel stereo algorithm, the convergent views have to be rectified in order to have horizontal and parallel epipolar lines.  ...  Reliability Measure Based on Consistency Check Similar results can be observed for the third criterion.  ... 
doi:10.5244/c.14.56 dblp:conf/bmvc/SchreerBK00 fatcat:k3oc7zmtg5bcrm42kgk24q5tk4

Recovering epipolar geometry from images of smooth surfaces

O. Kupervasser
2013 Pattern Recognition and Image Analysis  
The CTPM method is based on property of the tangential to isophoto curve epipolar line to map into the tangential to correspondent isophoto curves epipolar line.  ...  The CCPM method is based on searching correspondent points on isophoto curves with the help of correlation of curvatures between these lines.  ...  It is based on the following property of epipolar geometry that is correct for assumption of constant brightness: epipolar line tangential to isophoto curves maps to epipolar line, is also tangential to  ... 
doi:10.1134/s1054661813020107 fatcat:sya6bijhovcuxoom6d4beakawa

Junction Matching and Fundamental Matrix Recovery in Widely Separated Views

E. Vincent, R. Laganière
2004 Procedings of the British Machine Vision Conference 2004  
To this end, a formulation is proposed, based on a constrained minimization involving an estimated fundamental matrix.  ...  The approach presented in [13] is somewhat similar to the one proposed here, being based on junction points.  ...  Thus, the previous epipolar geometry can be a starting point in estimating the new one.  ... 
doi:10.5244/c.18.10 dblp:conf/bmvc/VincentL04 fatcat:wole24ft6bb4ncjqb55srypy5m

Geometry-Aware Feature Matching for Structure from Motion Applications

Rajvi Shah, Vanshika Srivastava, P.J. Narayanan
2015 2015 IEEE Winter Conference on Applications of Computer Vision  
Our approach first uses a small sample of features to estimate the epipolar geometry between the images and leverages it for guided matching of the remaining features.  ...  The geometry-aware approach prevents such preemptive rejection using a selective ratio-test and works effectively even on scenes with repetitive structures.  ...  Conclusions and Future Work We proposed a simple and generalized geometry-aware algorithm for fast and efficient feature matching of static scenes and demonstrated its application for SFM reconstruction  ... 
doi:10.1109/wacv.2015.44 dblp:conf/wacv/ShahSN15 fatcat:gz6lj3vrtfh2rcariyhxdesebe

Camera Calibration from Dynamic Silhouettes Using Motion Barcodes

Gil Ben-Artzi, Yoni Kasten, Shmuel Peleg, Michael Werman
2017 arXiv   pre-print
This improvement is based on a new temporal signature: motion barcode for lines.  ...  The motion barcodes of two corresponding epipolar lines are very similar, so the search for corresponding epipolar lines can be limited only to lines having similar barcodes.  ...  If The temporal similarity between two lines l and l is defined as the correlation between their motion barcodes; d t (l, l ) = corr(b l (t), b l (t)) (1) Epipolar Geometry by Matching Lines The epipolar  ... 
arXiv:1506.07866v4 fatcat:3pacbnrdmzatzcglgsqpxsdlni

Camera Calibration from Dynamic Silhouettes Using Motion Barcodes

Gil Ben-Artzi, Yoni Kasten, Shmuel Peleg, Michael Werman
2016 2016 IEEE Conference on Computer Vision and Pattern Recognition (CVPR)  
This improvement is based on a new temporal signature: motion barcode for lines.  ...  The motion barcodes of two corresponding epipolar lines are very similar, so the search for corresponding epipolar lines can be limited only to lines having similar barcodes.  ...  The temporal similarity between two lines l and l ′ is defined as the correlation between their motion barcodes; d t (l, l ′ ) = corr(b l (t), b l ′ (t)) (1) Epipolar Geometry by Matching Lines The epipolar  ... 
doi:10.1109/cvpr.2016.444 dblp:conf/cvpr/Ben-ArtziKPW16 fatcat:7uiqktmksvdphjly5zzulfkwbq

Using Stereo Matching with General Epipolar Geometry for 2D Face Recognition across Pose

C.D. Castillo, D.W. Jacobs
2009 IEEE Transactions on Pattern Analysis and Machine Intelligence  
To enable this, we show that, for conditions common in face recognition, the epipolar geometry of face images can be computed using either four or three feature points.  ...  The proposed approach has been tested on the CMU PIE data set and demonstrates superior performance compared to existing methods in the presence of pose variation.  ...  They would like to thank Peter Belhumeur for his insights on the interactions between pose and illumination in face recognition.  ... 
doi:10.1109/tpami.2009.123 pmid:19834149 fatcat:5dtw6kjvgbdutofbmrp3zeudfi

An EA-Based Method for Estimating the Fundamental Matrix [chapter]

Daniel Barragan, Maria Trujillo, Ivan Cabezas
2015 Lecture Notes in Computer Science  
The qualitative evaluation is conducted by analysing obtained epipolar lines, regarding expected appearance, based on a-priori knowledge of camera systems during the capturing process.  ...  The quantitative evaluation of the proposed method is based on residuals. Experimental results shown the proposed method is able to correctly reconstruct the epipolar geometry.  ...  Although, matching points lie on corresponding epipolar lines, the epipolar geometry is not correctly recovered for the Raglan and the Kapel datasets.  ... 
doi:10.1007/978-3-319-25751-8_28 fatcat:lyz7z3ftoffstgfcd7guolmo5q
« Previous Showing results 1 — 15 out of 6,926 results