Filters








21,536 Hits in 5.8 sec

The Representation and Matching of Images Using Top Points

M. Fatih Demirci, Bram Platel, Ali Shokoufandeh, Luc L. M. J. Florack, Sven J. Dickinson
2009 Journal of Mathematical Imaging and Vision  
In previous work, singular points (or top points) in the scale space representation of generic images have proven valuable for image matching.  ...  This representation allows us to utilize coarse-tofine graph matching algorithms for comparing images represented in terms of top point configurations instead of using solely the top points and their features  ...  For the comparison, we use a subset of the Amsterdam Library of Object Images (ALOI) [18] . The subset consists of 5 objects with 36 views per object.  ... 
doi:10.1007/s10851-009-0157-y fatcat:zmsen53ohjgkdem4x2ufgerbnm

Hybrid Scene Compression for Visual Localization

Federico Camposeco, Andrea Cohen, Marc Pollefeys, Torsten Sattler
2019 2019 IEEE/CVF Conference on Computer Vision and Pattern Recognition (CVPR)  
Localizing an image w.r.t. a 3D scene model represents a core task for many computer vision applications.  ...  Furthermore, the localization rates and accuracy obtained with our approach are comparable to state-of-the-art feature-based methods, while using a small fraction of the memory.  ...  We thank Google's Visual Positioning System for their support.  ... 
doi:10.1109/cvpr.2019.00784 dblp:conf/cvpr/CamposecoCPS19 fatcat:5nwacf5tbvfwfeiohmqsxhaufa

A Panoramic Localizer Based on Coarse-to-Fine Descriptors for Navigation Assistance

Yicheng Fang, Kailun Yang, Ruiqi Cheng, Lei Sun, Kaiwei Wang
2020 Sensors  
In addition, the majority of current VPR algorithms are designed for forward-facing images, which can only provide with narrow Field of View (FoV) and come with severe viewpoint influences.  ...  A comprehensive set of experiments is conducted on several datasets including both public benchmarks and our real-world campus scenes.  ...  Acknowledgments: The fully electric instrumented vehicle utilized to capture panoramic annular images is provided by the Center for Robotics and Intelligent Manufacturing Engineering, College of Engineers  ... 
doi:10.3390/s20154177 pmid:32727159 fatcat:b444nimndrgjzjt733rm5vjg7e

Hybrid Scene Compression for Visual Localization [article]

Federico Camposeco, Andrea Cohen, Marc Pollefeys, Torsten Sattler
2019 arXiv   pre-print
Localizing an image wrt. a 3D scene model represents a core task for many computer vision applications.  ...  Furthermore, the localization rates and accuracy obtained with our approach are comparable to state-of-the-art feature-based methods, while using a small fraction of the memory.  ...  We thank Google's Visual Positioning System for their support.  ... 
arXiv:1807.07512v2 fatcat:ltvxnbausffkxbwrbyk2mg2om4

Complexity-Based Integration Of Multi-Viewpoint Imagery For As-Is Roadway Map Generation

Kohji Kamejima
2007 Zenodo  
Publication in the conference proceedings of EUSIPCO, Poznan, Poland, 2007  ...  Suppose that objects are visualized as subsets ofand, without serious loss of generality, the object image to be detected, Λ, is identified within the Borel field F generated by the subsets of Ω.  ...  criterion for precise matching of an object in multi-viewpoint images.  ... 
doi:10.5281/zenodo.40226 fatcat:2cfcl3ybr5gtzofvcgbmheeewq

Figure-Ground Organization in Visual Cortex for Natural Scenes

Jonathan R. Williford, Rüdiger von der Heydt
2016 eNeuro  
We found that about half of the neurons were border-ownership selective for contours in natural scenes, and this selectivity originated from the image context.  ...  Thus, the cortical mechanisms of figure-ground organization are fast and efficient even in images of complex natural scenes.  ...  We report here that a subset of neurons in visual area V2 are selective for border-ownership in images of natural scenes.  ... 
doi:10.1523/eneuro.0127-16.2016 pmid:28058269 pmcid:PMC5197405 fatcat:feph346turd3fpd6mrvyuq7g5m

Stratified Dense Matching for Stereopsis in Complex Scenes

J. Kostkova, R. Sara
2003 Procedings of the British Machine Vision Conference 2003  
Such features reduce the need for strong prior models (continuity) and thus algorithms that are less prone to false positive artefacts in general complex scenes can be applied.  ...  Local joint image modeling in stereo matching brings more discriminable and stable matching features.  ...  However, none of them (except for the search range) are critical for the matching process. The default values are: 5 × 5 initial matching window, and minimal component size of 25 pixels.  ... 
doi:10.5244/c.17.33 dblp:conf/bmvc/KostkovaS03 fatcat:nayso6azurdihmgxs2jka4ppdq

Figure-ground organization in visual cortex for natural scenes [article]

Jonathan R. Williford, Rüdiger von der Heydt
2016 biorxiv/medrxiv   pre-print
We found that about half of the neurons were border-ownership selective for contours in natural scenes and this selectivity originated from the image context.  ...  Thus, the cortical mechanisms of figure-ground organization are fast and efficient even in images of complex natural scenes. Understanding how the brain performs this task so fast remains a challenge.  ...  We report here that a subset of neurons in visual area V2 are selective for border-ownership in images of natural scenes.  ... 
doi:10.1101/053488 fatcat:7areakrwqzbfxlgrtkgndbtily

Optimizing Requirements for a Compact Spaceborne Adaptive Spectral Imaging System in Subpixel Target Detection Applications

Sanghui Han, John Kerekes, Shawn Higbee, Lawrence Siegel
2020 IEEE Journal on Miniaturization for Air and Space Systems  
The parameters we selected for analysis were target fill fraction, noise, number of bands, and scene complexity to find critical points in the trade space and reach a set of recommendations.  ...  We used an analytic model to predict performance and generate trade curves, then simulated a scene to analyze potential operational effects on performance for the selected target and background combinations  ...  The maximum k value was 12 for the most complex subset scene and V scene = 0.82, and k = 5 for the least complex subset scenes with V scene = 0.30.  ... 
doi:10.1109/jmass.2020.2994273 fatcat:7pak54kfcre67pmserjmpfsiwy

High resolution mapping of methane emissions from marine and terrestrial sources using a Cluster-Tuned Matched Filter technique and imaging spectrometry

Andrew K. Thorpe, Dar A. Roberts, Eliza S. Bradley, Christopher C. Funk, Philip E. Dennison, Ira Leifer
2013 Remote Sensing of Environment  
In this study, a Cluster-Tuned Matched Filter (CTMF) technique was applied to data acquired by the Airborne Visible/Infrared Imaging Spectrometer (AVIRIS) over marine and terrestrial locations known to  ...  For a region with natural CH 4 and oil seepage located west of downtown Los Angeles, significant CH 4 anomalies were identified for known sources at the La Brea Tar Pits and in close proximity to probable  ...  Acknowledgments The authors thank Joseph P. McFadden and anonymous reviewers for their insightful comments.  ... 
doi:10.1016/j.rse.2013.03.018 fatcat:65wpslz7wzebjmyxpnbep35er4

Unsupervised Band Selection of Hyperspectral Images via Multi-dictionary Sparse Representation [article]

Fei Li, Pingping Zhang, Huchuan Lu
2018 arXiv   pre-print
Band selection is a direct and effective method to remove redundant information and reduce the spectral dimension for decreasing computational complexity and avoiding the curse of dimensionality.  ...  Finally, the specific bands will be selected, if they get higher weights than other bands in the representation of the original image.  ...  The residual error of signals can be derived, then the atom matching the residual error best is selected contiguously.  ... 
arXiv:1802.06983v1 fatcat:7hts2aa76vflfangqkk3jqwviq

Multispectral-based color reproduction research at the Munsell Color Science Laboratory

Roy S. Berns, Francisco H. Imai, Peter D. Burns, Di-Yuan Tzeng, Jan Bares
1998 Electronic Imaging: Processing, Printing, and Publishing in Color  
For critical color-matching applications such as catalog sales, art-book reproductions, and computer-aided design, typical images, although pleasing, are unacceptable with respect to color accuracy.  ...  The traditional techniques of image capture, scanning, proofing, and separating do not take advantage of colorimetry and spectrophotometry.  ...  If the printer has a large set of inks from which to choose from, it should be possible to select a subset of inks that achieve a spectral match to critical scene elements.  ... 
doi:10.1117/12.324139 fatcat:dr5b5p2ds5bbrlmnmoxhmhkvxa

Divide and Conquer: Subset Matching for Scene Graph Generation in Complex Scenes

Xin Lin, Jinquan Zeng, Xingquan Li
2022 IEEE Access  
The goal of scene graph generation (SGG) is to classify objects and their pair-wise relationships in a visual scene.  ...  First, we decompose SGG into two types of subset matching problems: node subset matching and edge subset matching.  ...  The scene graph for each image consists of 11.6 objects and 6.2 relationships on average.  ... 
doi:10.1109/access.2022.3165617 fatcat:7raleom6ffhv5caw3objdq6av4

A Scale-Adaptive Matching Algorithm for Underwater Acoustic and Optical Images

Jun Liu, Benyuan Li, Wenxue Guan, Shenghua Gong, Jiaxin Liu, Junhong Cui
2020 Sensors  
Matching of underwater acoustic and optical images is a fundamental and critical problem in underwater exploration because it usually acts as the key step in many applications, such as target detection  ...  In the matching process, a correlation filter is applied to determine the correlation for matching between images.  ...  Conflicts of Interest: The authors declare no conflict of interest.  ... 
doi:10.3390/s20154226 pmid:32751338 fatcat:r6mvc5ktrbbtnkjkhtg7nbqkzq

Visual motion perception

T. D. Albright, G. R. Stoner
1995 Proceedings of the National Academy of Sciences of the United States of America  
The second step involves the selective integration of retinal motion signals according to the object of origin.  ...  The first step toward this goal, which consists of detecting the displacement of retinal image features, has been studied for many years in both psychophysical and neurobiological experiments.  ...  This work was supported by grants from the National Institute of Mental Health and the National Eye Institute.  ... 
doi:10.1073/pnas.92.7.2433 pmid:7708660 pmcid:PMC42232 fatcat:alprn7j3cbe3vn6el4js2nhsfu
« Previous Showing results 1 — 15 out of 21,536 results