82,047 Hits in 4.8 sec

A bootstrapping framework for annotating and retrieving WWW images

Huamin Feng, Rui Shi, Tat-Seng Chua
2004 Proceedings of the 12th annual ACM international conference on Multimedia - MULTIMEDIA '04  
Most current image retrieval systems and commercial search engines use mainly text annotations to index and retrieve WWW images.  ...  We carry out experiments using a set of over 5,000 images acquired from the Web. We explore the use of different combinations of HTML text and visual representations.  ...  Traditional content-based image retrieval approaches employ color, texture and/or statistical shape features to model image contents [10, 26] .  ... 
doi:10.1145/1027527.1027748 dblp:conf/mm/FengSC04 fatcat:axskjzpd4veufhdm2em3ter4ra

Is Visual Similarity Sufficient for Semantic Object Recognition?

Andrzej Sluzek, Mariusz Paradowski
2012 Conference on Computer Science and Information Systems  
a certain level of visual and configurational uniformity within the class).  ...  It is shown that although detection of near-identically looking objects in random images can be performed reliably, the same is not possible for semantically defined classes of objects (even if we expect  ...  In general, TERM features are combinations of quadrilaterals determined by the geometry of multi-ellipse configurations.  ... 
dblp:conf/fedcsis/SluzekP12 fatcat:qiokwybi45hg3pm564snpwgjti

Soil moisture retrieval over irrigated grasslands using X-band SAR data combined with optical data acquired at high resolution

Mohammad El Hajj, Nicolas Baghdadi, Mehrez Zribi, Gilles Belaud, Bruno Cheviron, Dominique Courault, Francois Charron
2015 2015 IEEE International Geoscience and Remote Sensing Symposium (IGARSS)  
This approach is based on the coupling between Synthetic Aperture Radar and optical images through the Water Cloud Model.  ...  Three inversion configurations were defined: (1) HH polarization, (2) HV polarization, and (3) both HH and HV polarizations, all including the Leaf Area Index derived from optical images.  ...  Retrieved M v with configuration 1 (HH and LAI) versus in situ measurements for LAI in situ lower than 3 m 2 /m 2 (a), and higher than 3 m 2 /m 2 (b). in : IGARSS 2015, 26-31/07/2015, Milan, ITA  ... 
doi:10.1109/igarss.2015.7326020 dblp:conf/igarss/El-HajjBZBCCC15 fatcat:xoxmp6yx4nfvrdrn2v54q7avx4

Automatic Deformable Shape Segmentation for Image Database Search Applications [chapter]

Lifeng Liu, Stan Sclaroff
1999 Lecture Notes in Computer Science  
Preliminary experiments in color segmentation and shape-based retrieval are reported.  ...  A method for shape based image database indexing is described. Deformable shape templates are used to group color image regions into globally consistent configurations.  ...  In the next example, we show the approach as employed in an image retrieval application.  ... 
doi:10.1007/3-540-48762-x_74 fatcat:6vkgw456cnbwpjtuy2yujrnjua

Tilted grating phase-contrast computed tomography using statistical iterative reconstruction

Lorenz Birnbacher, Manuel Viermetz, Wolfgang Noichl, Sebastian Allner, Andreas Fehringer, Mathias Marschner, Maximilian von Teuffenbach, Marian Willner, Klaus Achterhold, Peter B. Noël, Thomas Koehler, Julia Herzen (+1 others)
2018 Scientific Reports  
In this work, we employ the tilted grating configuration with a laboratory GBPC-CT setup with cone-beam geometry and use statistical iterative reconstruction (SIR) with a forward model accounting for diagonal  ...  Our results show a strong reduction of streak artefacts and significant increase in image quality.  ...  This work was supported by the German Research Foundation (DFG) and the Technische Universität München within the funding programme Open Access Publishing.  ... 
doi:10.1038/s41598-018-25075-7 pmid:29700372 pmcid:PMC5920057 fatcat:54tokykplrgchp5eueirlijmm4

Survey On Content Based Image Retrieval

Anuradha Shitole1
2014 Zenodo  
So searching and retrieving images in large image databases has become more challenging. From the last few years, Content Based Image Retrieval (CBIR) gained increasing attention from researcher.  ...  CBIR is a system which uses visual features of image to search user required image from large image database and user's requests in the form of a query image.  ...  In this approach the comparison of the retrieval performance using different combinations of features is done. The combination is done in two levels.  ... 
doi:10.5281/zenodo.1450266 fatcat:ekabvdx2rneobkpercllkmx2ha

Image based aberration retrieval using helicalpoint spread functions

René Berlich, Sjoerd Stallinga
2020 Applied Optics  
The approach utilizes a conventional phase diversity approach in combination with a pupil-engineered, helical point spread function (PSF) to discriminate the aberrated PSF from the object features.  ...  The presented approach is tested experimentally by retrieving the two-dimensional aberration distribution of a test setup by imaging an extended, unknown scene.  ...  It provides the precision limit of the phase retrieval in the presence of image noise in terms of a statistical process.  ... 
doi:10.1364/ao.396140 pmid:32749356 fatcat:5v7667to6ncgdpjoxjzk6zzeuu

Guest Editorial: Special Section on Digital Image Recovery and Synthesis

Paul S. Idell
1994 Optical Engineering: The Journal of SPIE  
Fox, Voelz, and Shannon show how high-frequency image information may be recorded (and retrieved from) within the zero regions of the optical transfer function of sparse-array multiaperture optical imaging  ...  First, image recovery techniques may result from the desire to fully capitalize on the utility of novel sensor configurations. This objective is represented in fourpapers.  ...  technique employing statistical estimation and phase-retrieval methods.  ... 
doi:10.1117/12.192338 fatcat:afpxrjjsnfgbfp53n7duu6xq7a

The CLEF 2011 Photo Annotation and Concept-based Retrieval Tasks

Stefanie Nowak, Karolin Nagel, Judith Liebetrau
2011 Conference and Labs of the Evaluation Forum  
Both tasks differentiate among approaches that consider solely visual information, approaches that rely only on textual information in form of image metadata and user tags, and multi-modal approaches that  ...  Summarizing the results, the annotation task could be solved with a MiAP of 0.443 in the multimodal configuration, with a MiAP of 0.388 in the visual configuration, and with a MiAP of 0.346 in the textual  ...  For the concept-based retrieval task two approaches were used: one based on the concept relevance scores in a manual configuration and one automated approach which is based solely on the sample images  ... 
dblp:conf/clef/NowakNL11 fatcat:kfjwv7jqwvbahcftxijsfsmgi4

Multiple Layar Kernel-Based Approach in Relevance Feedback Content-Based Image Retrieval System

Kien-Ping Chung, Chun-Che Fung
2005 2005 International Conference on Machine Learning and Cybernetics  
Relevance feedback has drawn intense interest from many researchers in the field of content-based image retrieval (CBIR).  ...  This paper proposes a two layer kernel configuration with an objective to improve the retrieval accuracy.  ...  This approach generally starts from prompting users to search the system via keywords, image examples or a combination of both.  ... 
doi:10.1109/icmlc.2005.1526981 fatcat:ynf32iddkfdrzoqvmmgjgm6ow4

A Unified Framework for Retrieving Diverse Social Images

Maia Zaharieva, Patrick Schwab
2014 MediaEval Benchmarking Initiative for Multimedia Evaluation  
In this paper we explore the performance of a generic, unified framework for the retrieval of relevant and diverse images from social photo collections.  ...  The approach allows for the easy evaluation of different visual and textual image descriptions, clustering algorithms, and similarity metrics.  ...  Acknowledgment This work has been partly funded by the Vienna Science and Technology Fund (WWTF) through project ICT12-010.  ... 
dblp:conf/mediaeval/ZaharievaS14 fatcat:odzsgg7msvgidinqbn62afpjdu

MIRACLE at ImageCLEF 2004

José Luis Martínez-Fernández, Ana García-Serrano, Julio Villena, Víctor David Méndez Sáenz, Santiago González-Tortosa, Michelangelo Castagnone, Javier Alonso
2004 Conference and Labs of the Evaluation Forum  
New techniques, devoted to the combination of linguistic and statistical language processing methods, have been tested, continuing with the experiments carried out in last year  ...  The second participation of the MIRACLE (Multilingual Information RetrievAl for the CLEf campaign) research group in the ImageCLEF task is described in this paper.  ...  Acknowledgements This work has been partially supported by the projects OmniPaper (European Union, 5th Framework Programme for Research and Technological Development, IST-2001-32174) and MIRACLE (Regional  ... 
dblp:conf/clef/Martinez-FernandezGVSGCA04 fatcat:ps222hvjkvbpzmbo2dynhiz66e

Multimodal Markov Random Field for Image Reranking Based on Relevance Feedback

Ricardo Omar Chávez, Hugo Jair Escalante, Manuel Montes-y-Gómez, Luis Enrique Sucar
2013 ISRN Machine Vision  
This paper introduces a multimodal approach for reranking of image retrieval results based on relevance feedback.  ...  The MRF takes into account (1) the rank information provided by the initial retrieval system, (2) similarities among images in the list, and (3) relevance feedback information.  ...  This work was supported by CONACyT under project Grant 61335 and scholarships 205834 and 205834.  ... 
doi:10.1155/2013/428746 fatcat:xiqflqdaz5cp7krfbtjlwjcv3m

Recent breakthroughs in scanning transmission electron microscopy of small species

Karel Hendrik Wouter van den Bos, Thomas Altantzis, Annick De Backer, Sandra Van Aert, Sara Bals
2018 Advances in Physics: X  
In this review, we highlight the latest approaches that are available to reveal the 3D atomic structure of small species.  ...  Often, the ultimate goal is to retrieve the three-dimensional structure, which is very challenging since small species are typically sensitive to electron irradiation.  ...  Here, counting results are put on an absolute scale by combining both the simulation-and statistics-based atomcounting method.  ... 
doi:10.1080/23746149.2018.1480420 fatcat:lj3sta7ipbdvhhu4a4vtivknfm

A hierarchical nonparametric discriminant analysis approach for a content-based image retrieval system

K.-P. Chung, C.C. Fung
2005 IEEE International Conference on e-Business Engineering (ICEBE'05)  
Such approach is not feasible for systems that analyze images in real-time. In this paper, a hierarchical multi-layer statistical discriminant framework is proposed.  ...  Developments in CBIR have drawn interest from many researchers and practitioners in recent years. The challenge is how to retrieve the most appropriate or relevant images at the fastest speed.  ...  The proposed framework combines the statistical discriminant approach with multi-layer analysis framework.  ... 
doi:10.1109/icebe.2005.4 dblp:conf/icebe/ChungF05 fatcat:qnuucmcvtff3lk6a7n4lgm2c3e
« Previous Showing results 1 — 15 out of 82,047 results